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BMW 325I User's Manual

1. rz 7 IGNITION LOWER FROM IGNITION SWITCH DISTRIBUTION PAGES 1240 0 1240 1 pe SWITCH EUSE 21 START oF BOX 1 LAI teer 2222 1 5 RD BK 2 5 GN FUSE 1 5 RD BK 52 200 1 RD GN perans wem 5734 8 BK GN 15 RD BK 2 5 GN SEE FUSE 302 ACCESSORY CONNECTOR 213 6 HERI 5319 DETAILS ED biis 1 5 pee ema RADIO RD GN 1 5 Ue 2A p 1 5 GN nT INSTRUMENT CLUSTER 5 BR GN RDANT 75 2g 104 1 5 RD WT C3 23 NOT D B USED BOARD 5 ROMT 5 RD WT B C COMPUTER een 97 HORN HORN NOTE SEE PAGE m ME ON BOARD 6131 0 FOR REMAINING CHIME STARTANPUT COMPUTER CHIME MODULE C2 MODULE MODULE 1 6 GN RD WIRING 1 TRIGGER OUTSIDE 5010 STATE TEMPERATURE INPUT _ u _ coti 5 50110 3 5 imm 5 Es ON BOARD GROUND P 260 COMPUTER 1 m pow d RELAY BOX iat dide wa asa ta iu a wa was 28 URE CODE 3 M E RELAY RELAY 4 5 BR 2 Wf c2 2 4 19 3 2 77 NOT USED 1 5 GN 1 0104 5 BR YL 5 BR BU 25 GN INJECTION pins r
2. eo b 211 20 5 BR 6200 MULTIFUNCTION CLOCK 6581 1 5 RDWT 225 RD WT 5 MULTIFUNCTION CLOCK ott SELECTED OUTSIDE TEMPERATURE M SENSOR 5 GY RD prd Pd Pd Pd Prud 5 BRANT 5 BR RD Pd E ul d Pd Pd pd Pd Ps Pd Pd pd Pd pd Pd d 6581 2 ON BOARD COMPUTER cbe ioci occhio EM NP pi LED ML M AL HOT IN RUN OR START HOT IN ACCY RUN OR START umm mm m 7 JE TTT TTT POWER DISTRIBUTION BOX 75 GN WT FUSE 5212 ry DETAILS 5 GN WT 6 5 VI 1 ese eta i wa nds dai duo nos 25 W 3 5 Y E ES 5 BR GN NOT USED BNET 8 A 5 WT BK 5 BR GN 5 BR GY 5 GN BK SGY VI 5 BR RD SWT BU PRESENT MOTRONIC CONTROL DASH LIGHTS UNIT 7 EYEL TANK ENDER SWITCH CLOSES WHEN TANK 5 GY RD CONTAINS LESS THAN 1 5 GALLONS 1 5 21 8 17 18 bela rary a een Um s ON BOARD COMPUTER MODULE as tua u 9 5 BR WT 5 YL SWITCH NOT USED DASH LIGHTS ON BOARD COMIPUTER 6581 3
3. mm POWER usc DISTRIBUTION FUSE 6 7 6 AMP BOX 7 5 AMP IL RE 1 VUGN 1GY BK 6 1 VIGN arara F USE 5 GY BK LIGHT SWITCH 1 s I GN CHECK HEAD 23 CONTROL UNIT i PN de NIRE 8 5 s ae BRAKE RESET E 5 GY YL 5 74 08000 5 1 GN RD STATE 16Y YL SGY YL active CHECK 5cvwr 1 GYMT LIGHT SWITCH ACTIVE CHECK T 207 12 CONTROL UNIT E 5209 DETAILS CONTROL UNIT LIGHT cvi SWITCH c c LIGHT DETAILS REAR LIGHTS SWITCH FAULT DETAILS is 1GY YL STOP LIGHTS 20 75 LIGHT 5 GY BR 5 6Y Vi SWITCH 5326 DETAILS 175 GY RD KAR ci 77771 2 5 16Y 80 7 1GY GN 15 GY 75 GY BK 1GN YL GN BU c2 75 BR 300 LIGHTS TAIL LIGHTS TAIL LIGHTS LICENSE STOP LIGHTS 6216 2 ACTIVE CHECK CONTROL HOTATALLTIMES HOTATALLTIMES HOTINRUNORSTART m T POWER IGNITION DISTRIBUTION SWITCH 117 SWITCH IF EQUIPED 2 WITH AIR 75 GN WT BE BAGS 4 5 GN WT FUSE ENI SRS CONNECTOR DETAILS FUSE 2 C240 NOT USED 119 p DETAILS ACTIVE PRINTED CHECK CIRCUIT 580 4 CONTROL DISTRIBUTION
4. 1 DIAGNOSTIC CONNECTOR INJECTION ELECTRONICS 1360 1 ENGINE BLOCK DIAGRAM HOT IN RUN OR START HOT AT ALL TIMES HOT AT ALL TIMES HOT IN RUN ONLY FROM HOT AT ALL TIMES UNLOADER RELAY HOT IN RUN OR START 1 PA tov 2 CONTROL 241 SWITCHES 4 ay 2 MOTRONIC CONTROL UNIT HEATER CONTROL 4 COOLANT THROTTLE TEMPERATURE SWITCH 1360 2 INJECTION ELECTRONICS HOT IN RUN OR START AUTOMATIC TRANSMISSION FUEL INJECTORS RANGE SWITCH HOT IN RUN OR START IDLE SPEED Actuator 15 e CYLINDER IDENTIFICATION SENSOR CONTROL UNIT 5 EVAPORATIVE lt Sim 2 INJECTION ELECTRONICS 1360 3 HOTINRUNORSTART 1 POWER DISTRIBUTION 75 w 424 dta w ih FUSE 5212 DETAILS 306 5 GNWT TTT TT TTT INSTRUMENT AUTOMATIC CLUSTER 4 TRANSMISSION HECK RANGE SWITCH NOT USED 24 0131 5 RD BU START AUTOMATIC 42 MOTRONIC 4 CONTROL UNIT 1360 4 INJECTION ELECTRONICS TAN POWER DISTRIBUTION BOX IGNITION SWITCH HOT AT ALL TI
5. DISTRIBUTION SWITCH PAGES 1240 0 AND 1240 1 1 ON BOARD r SML COMPUTER 1 5 15 GNAWT FUSE S212 DETAILS 5 BK GN 5 BK YL NOT USED INSTRUMENT 5 GN WT 5 GN AWT CLUSTER NOT USED CLUSTER 8 1 PRINTED CIRCUIT iu TWMICATORSL GAUGES S SPEEDOMETER Aoi 8 8 588 8200 i 246 POWER INPUT PRINTED FUEL ECONOM CONTROL 222227 TACHOMETER CONTROL clacuit 1 TUUS IM eus TY wY wy y 5 ee Ib 1 44 64 INTERVAL paocesson q INTERVAL 1 TACHOMETER ECONOMY GAUGE FUEL ECONOMY GAUGE CONTROL db s a me la 6216 0 ACTIVE CHECK CONTROL HOT IN ACCY RUN OR START ACTIVE CHECK CONTROL 1 When the Ignition Switch is initially placed in Run the Active Check 18 1 5 VI GY TURN HAZARD Control Arm Indicator flashes and Viae tha Active Check Control Unit Brake 103 Light LED and panel light illuminate test purposes Depressing the brake pedal clears the display ACTIVE CHECK CONTROL UNIT N When the Ignition Switch is placed Fi in Run fault monitoring begins ae To monitor the tow beams rear lights or license lights those ci
6. ONE POLE COMPONENT START RELAY LOW TWO POSITION TERMINAL ENERGIZED EAM SWITCH NUMBER IN START ELAY x DETAILS ABOUT N conwecron COMPONENT OR 15 BR BK TERMINAL OPERATION NUMBER TO POWER DISTRIBUTION BOX PAGE 1 SWITCHES THAT CURRENT PATH MOVE TOGETHER IS CONTINUED AS LABELED DASHED LINE SHOWS THE ARROW SHOWS A MECHANICAL DIRECTION OF CURRENT CONNECTION FLOW AND IS REPEATED BETWEEN SWITCHES TWO POLE FOUR POSITION SWITCH RITEGONTINUERM IGNITION FROM LOW SWITCH BEAM RELAY PAGE 5 TWO CONNECTIONS PINS THE SAME POWER 35 BU BR 76 BU YL CONNECTOR DISTRIBUTION BOX DASHED LINE SHOWS R IS ENERGIZED 5 BU BR 5 BU YL PARTS OF THE IN ACCY RUN OR START SAME CONNECTOR RH RELAY SHOWN RELAY SHOWN TURNIPARK 4 LIGHT WITH NO WITH RESISTOR Ap EMITTING CURRENT ACROSS COIL aaa N S DIODE FLOWING ee RESISTOR ACROSS COIL 75 BR WHEN COIL IS IS FOR NOISE Pra ENERGIZED SWITCH SUPPRESSION DISTRIBUTION IS PULLED CLOSED 25 BR OTHER CIRCUITS ALSO GROUNDED AT G102 THROUGH S101 BUT ARE NOT SHOWN REFER TO GROUND DISTRIBUTION FOR DETAILS 6102 6 SYSTEMATIC TROUBLESHOOTING rs wnk JA as rw nm T r n TROUBLESHOOTING PROCEDURE 1 Verify the Problem Operate the problem circuit to check the accuracy of the complaint Note the symptoms of the inoperative circuit 2 Analyze the Problem Refer to the schematic of
7. 2 5 GN BU 1 5 VUGY 1 5 35 1 VGN DISTRIBUTION FUSE FUSE FUSE FUSE FUSE DETAILS DETAILS DETAILS DETAILS DETAILS GROUND POWER DISTRIBUTION 0670 3 POWER DISTRIBUTION B0X 25 GN BK 4 GN BR 5 BK GN FUSE DETAILS 2 5 WT BR me ACCESSORY 2 5 CONNECTOR 2 5 GN BU 3224 305 2 5 GN BU 2 5 GN BU SUNROOF AUXILIARY FAN AUXILIAAY SWITCH NORMAL SPEED FAN BLOWER RESISTOR 0670 4 POWER DISTRIBUTION a rTk I rr ae rn Vx rAFsY a mq s v ha Ft r a r DISTRIBUTION f i E CONTINUED FROM PRECEDING PAG NEXT PAGE 25 i 15 294 M 5 AUXILIARY FAN t 1 1 1 i i I i ACTIVE CHECK i CONTROL p 5 qu t HEADLIGHTS FOG LIGHTS FOG LIGHTS 1 I BELAY NOISE 2 T SUPPRESSORS BEAM 1 CHECK ELAY PART OF PRINTED i _ I b a FUSE 9 FUSE 3 FUSE 13 FUSE 14 FUSE 29 FUSE 30 1 15 15 AMP 4 nw TS AMP 4 7 5 AMP 7 5 AMP i 1 1 nd a im amo eub amp uum mama eva wes
8. GROUND DISTRIBUTION 100 DISTRIBUTION 1 5 BR 1 5 BR 4 BR 6320 0 REAR MARKER LICENSE TRUNK LIGHTS HOT AT ALL TIMES POWER DISTRIBUTION BOX 15 GY RD LIGHT SWITCH 3121 eras 15 GY RD 102b LIGHT SWITCH 8215 mh DETAILS 75 GY RD 35 GY RD 25 GY RD 36 GY AD 2 1 118 GY 16 GY BK GROUND DISTRIBUTION 1 BR 15 BR RH LICENSE LH LH REAR RH REAR 9 LIGHTS 3 3 sint war SIDE MARKER SIDE MARKER LIGHT LIGHT HOT AT ALL TIMES 77777 POWER DISTRIBUTION BOX 1 RD GN FUSE 338 Oe 75 RD GN 35 BR BK RUNK LIGHT SWITCH CLOSED WITH TRUNK OPEN 6322 0 BACK UP LIGHTS HOT IN RUN OR START DISTRIBUTION e MANUAL TRANSMISSION GNAWT BACK UP LIGHT SWITCH CLOSED IN REVERSE BUWT 6200 75 T 75 BUNT 75 BUNT 5241 18 BUNT 4 TTTT e um LH REAR 777777777 LIGHT ASSEMBLY GROUND GROUND 1 5 BR 1 5 BR 1 5 BR 6325 0 STOPLIGHTS HOT IN ACCY RUN OR START POWER DISTRIBUTION FUSE BOX DETAILS 1 VGN R 5 VI GN R 5 VI WT CRUISE e CONTROL 1 VUGN 1 I 7 BRAKE I SWITCH CLOSED WITH BRAKE l PEDA
9. us a e 5 4 BK GN 3 I L 1 Me 15 GN YL Tea cus 1 mm 1 WT BU 24 126 24 I Lan 5 YL BR 12 4A C1 FOG 1706 PMA INSTRUMENT GROUND BA qu in LIGHT LIGHT FUSE DISTRIBUTION i RHLOW GROUND DETAILS r TAUX X BEAM C Tere I DISTRIBUTION NORMAL SPEED uM 4 7 BEAM whe I BLOWER 2 2 INSTRUMENT JRESISTOR LOW CLUSTER 1 7 BEAM 1 6200 5200 1 POWER DISTRIBUTION 0670 5 _ INJECTION ELECTRONICS POWER 2 5 VI RD DISTRIBUTION 1GY 8K 1 GY GN 1 5 RD WT N 1 5 GN VI 1 5 RD BK 2 5 RD YL 2 5 RD YL 1 RD GN 190 1 N d 204 2 302 FUSE DETAILS 25 RD PUMP 24 219 5 GY BK 15 GY GN 2 5 RD YL RD POWER ANTENNA 0670 6 POWER DISTRIBUTION HOT IN ACCY RUN OR START POWER DISTRIBUTION BOX DISTRIBUTION BOX 15 VI GY 1 V GN 75 VI BK 5 VI GN 5 VI GN 5 VI GN e 340 1 1 392 ACCESSORY w pee ida d CONNECTOR ACTIVE CHECK WASHER
10. 5 GNAT ACTIVE DISTRIBUTION CHECK BOX SRS CONNECTOR NOT USED PROVIDES POWER FOR CONTINUOUS MEMORY oo ENGINE INDICATOR 1 2 TET SMTH ALAR CONTROL SOLID STATE Oe FAULT INDICATOR U FAULT CLEAR SEATBELTS INDICATOR TERES 16 20 18 17 i 9 8 5 BU BK 5 VVGN 5 BR RD 5 BU VI 2 10 101 COOLANT WASHER FLUID ERE gt LEVEL LEVEL SWITCH NL 5 GN YL 580 SWITCH OPEN WITH LOW SBR 3 1 OPEN WITH WASHER FLUID bee eee ae LOW COOLANT LEVEL LEVEL 1 BU VI 101 LEVEL 5 BR 5 SENSOR 18 7177 SEATBELT STATIC DYNAMIC oi LeveL Low WARNING SWITCH Dynamic swiTen CLOSES STATIC SWITCH OPENS 31 FOR OPERATIDN om LEVEL FULL 5114 GROUND SEE SEATBELT STATIC SWITCH CLOSES DISTRIBUTION DYNAMIC SWITCH OPENS WARNING BRAKE WARNING SYSTEM GROUND DISTRIBUTION 15 0 6103 6300 0 LIGHT SWITCH DETAILS POWER DISTRIBUTION BOX p Ig e sm Ren cdd CERNERET nn EHE NT but 7 8 AMP IDEE i POE I T 1 AA DEC Tee dM MOI e PARK hc 8 55 258 GY RD 5 Li 5 GY RD 5221 1GY RD 9 4x C103 1 GY YL VBVMT 16Y YL 5 GY YL 35 GY RD e
11. In windshield header above rear view mirror Throttle Switch Below LH side of throttle body Trunk Lid Lock Motor On trunk lock center support Unlock Inhibit Switch Rear of LH front door Washer Fluid Level Switch reservoir behind RH headlights Washer Ahead of RH front wheel well on reservoir Water Shut Off Solenoid LH side of evaporator housing Wiper Motor Under LH fresh air intake cowl Page Figure 8 3 0 1 7 1 4 6 8 4 7 1 2 3 COMPONENT LOCATION CHART 9000 3 CONNECTORS Page Figure C101 20 Next to power distribution box mounted engine dasliz uie vmi katie 7000 0 2 C103 29 Behind LH side of dash on body electrical bracket 7000 5 4 C104 3 Behind RH side of dash above glove box 7000 6 3 C109 5 Near wiper motor CITO crae a hace ale E In RH front of engine compartment C113 5 Behind LH headlights 7000 0 4 C126 2 Behind LH headlights C127 2 Behind RH headlights 7000 2 5 C128 2 Behind RH front side marker light C129 2 Behind LH front side marker light
12. On Board Computer 2 1 INDEX Index Alphabetical Listing of Electrical Circuits PAGE Power Distribution Box 0670 0 Power Mirrors 5116 0 Power Windows 2000 5133 2 5133 0 Radio With Sound System 6500 0 Radio Without Sound System 6500 2 RearDefogger 6100 2 Seatbelt Warning 6131 0 Service Interval Indicator 6210 2 Speedometer 6210 0 Splice Location Views Index 8000 0 Start Automatic 1240 0 Manual 1240 1 S nroof 5413 0 Tachometer 6210 3 Temperature Gauge 6210 1 Warnings Ignition Key Seatbelt 6131 0 Wiper Washer 6160 0 HOW TO USE THIS MANUAL 3 The purpose of this manual is to show WIRE INSULATION ABBREVIATIONS COLOR electrical schematics in a manner that ie 1 WIRE SIZE P CONVERS makes electrical troubleshooting easier Electrical components which work 2 together shown together AWG schematic The Wiper Washer schematic CROSSECTIONAL AREA AMERICAN for example shows all of the electrical MM WIRE GAUGE components in one diagram At the top
13. ngu REUS GREEN YELLOW RED qis asa em 5 RAI e 5B 4 5 INTERVAL R 191 5 BR RD PRINTED 5 BR VI CIRCUIT COOLANT kem TEMPERATURE E i SENDER ON BOARD DISPLAY TE COMPUTER SOLID STATE 5 BR 3 39 191 DU REMAINDER SHOWN ABOVE iu ed 101 15 BK 1 wiwa HOT IN RUN OR START POWER 16056211 DISTRIBUTION 15 4 BOX _ ON BOARD COMPUTER MULTIFUNCTION CLOCK 1 RD GN 5319 mm na 5 RD GN NOT USED 5 RD 8K 10 3 PLUGIN m MODULE MEMORY POWER INPUT Li ENGINE SPEED euet Ka s S i oe Mut Mam mam em mU dA gas em 16K r OHMS 1 zl RYE 25 26 20 5 WT BU 5 BR RD 5 BK 5 YL WT 8 101 ON BOARD COMPUTER MULTIFUNCTION CLOCK 5 BK 5 WT BK 6 32 M x ENGINE T C PRESENT MOTRONIC SPEED CONTROL 001907 soup STATE OUTPUT UNIT HOT IN START INSTRUMENT CLUSTER 6210 3 TACHOMETER FUEL ECONOMY GAUGE HOT IN RUN OR START
14. SATEK f PPE DISTRIBUTION 101 r JUNCTION BLOCK 5 C240 SRS CONNECTOR NOT USED 14 BK 20 BK e 18 BU 75 BU 10 RO 75 BU 2 109 u 12 lt CONNECTOR 1 5 BU BATTERY 16 BR NOT USED DIAGNOSTIC ALTERNATOR NOTE CHARGE INDICATOR PROVIDES EXCITATION CURRENT TO FIELD COIL RESISTOR ALLOWS ALTERNATOR TO CHARGE BULB BURNS OUT 1240 0 START POWER DISTRIBUTION BOX IGNITION 75 SWITCH 139 2301 75 GN YL 6306 2 5 BK YL fone AUTOMATIC 2 TRANSMISSION POWER 10 C200 DISTRIBUTION ES RANGE SWITCH 10 RD NOTE UNLOADER RELAY COILS ARE GROUNDED THROUGH STARTING MOTOR 2 5 BK EXCEPT WHEN STARTING WHEN STARTING BATTERY VOLTAGE IS APPLIED TO BOTH SIDES OF UNLOADER RELAY COILS AND RELAYS ARE DE ENERGIZED CAUISE POWER CONTROL unus a 233 DISTRIBUTION 5 BK GN JUNCTION TO INSTRUMENT SKIN CLUSTER PAGES jaaa 13604 uL sexen 3435 0 6581 3 BACK UP xm 15 7 cio 25 BK YL LIGHTS 5 240 V NOT 5200 CHARGING USED os BK YL INJECTION SYSTEM 175 BK GN SRS ELECTRONICS 7777 STARTER 5 2 5 BK YL 2 5 BK YL DIAGNOSTIC M CONNECTOR 1080 START MANUAL TRANSMISSION HOT IN RUN OR START 4 RD e Em INTON SWITCH
15. CONTROL UNIT PUMP READING PAGE 6216 0 PAGE 6160 0 LIGHT PAGE 6325 0 PAGE 6216 1 1 5 VI GY PAGE 6100 1 5 VI WT 3241 5 VINT CRUISE CONTROL UNIT SWITCH PAGE 6571 0 PAGE 6571 0 PAGE 6313 0 HOT IN RUN 2 5 GN BU 2 5 GN BU PAGE 6100 2 HOT IN ACCY RUN OR START DISTRIBUTION BOX 2392 ACCESSORY CONNECTOR 5 VI J5 VI GY 2 C216 ia cs INSTRUMENT DIGITAL CLUSTER RADIO CAGE 8210 0 PAGE 6500 0 POWER DISTRIBUTION 0670 7 HOTIN RUN ONLY FROM UNLOADER RELAY K POWER DISTRIBUTION BOX 15 GN BK caos 75 GN BK GN WT DUAL MIRROR TEMPERATURE LIGHT TIMEB CONTROL SWITCH CONTROL SWITCH PAGE 6454 0 PAGE 6330 0 PAGE 5116 0 0670 8 POWER DISTRIBUTION HOT IN START OR RUN 7 POWER 4 DISTRIBUTION BOX 75 GNAWT F NOT USED caoz ACCESSORY CONNECTOR 5 GN WT 5 GNAWT 45 GN YL iz AUTOMATIC INSTRUMENT INSTRUMENT ACTIVE CHECK SEATBELT TRANSMISSION CLUSTER CLUSTER CONTROL WARNING RANGE SWITCH PAGE 1360 3 PAGE 6210 1 UNIT TIMER PAGE 6216 2 PAGE 6131 0 PAGE 6322 0 POWER DISTRIBUTION 0670 9 HOT IN RUN ONLY FROM UNLOADER RELAY K CONTROL SWITCHES BLOWER LH FRESH RH FRESH PAGE 6413 0 CUT OFF SPEED RECIRCULATING RECIRCULATING SWITCH CONTROL AIR RELAY AIR RELAY
16. I l U Uy cad Nea EM OE NEIN TOFUSESTANO2 TOFUSES ON FACING PAGE 13ANDM 5 1 eu U O O d nan may a sam a lt a aib GU dnp sini ini i nb ib uie uno wo dnb van qii nao wao ut N a ws ses aae 5 GY ay 202 14 5 GY COMBINATION YL GN SWITCH I 2 vi BK BK 22 FOG INSTRUMENT 2S YL GN 9 LIGHTS x A IY CLUSTER FLASHER sn m m an C202 BR BR 20 1 1 1 yy 127 1 C126 22 GREEN i 3 INDICATORS 1 GROUND W 2 2 un DISTRIBUTION STEERING COLUMN I M 4 GROUND 8 SE 202 1588 9 588 5114 5100 GROUND 5114 5100 35 BR DISTRIBUTION 1 5 BR 1 1 6 BR 488 2 gt e up 5 YL DISTRIBUTION 5 WT VI 1wr vi 1 YLT INSTRUMENT 8 B 5 CLUSTER LH HIGH LH LOW wana 3 PRINTED
17. DIAGN0STI ETIN EXIT we 777777 rouen poo POWER MULTIFUNCTION DISTRIBUTION pig DISTRIBUTION 87 BOX CLOCK 75 WT GN ON BOARD 11 1 RD GN FUSE 5 RO BK NOT 3319 a SWT BU USED 5RD GN NOT USED NOT USED INSTRUMENT 5 GN BK CLUSTER n 2 W 1923 2 Ma 15 3 22 PRINTED CIRCUIT on mom cme oe eo 8 5 aon w qua m w s s u w Ves du ed gi qa L MEMORY POWER INPUT SPEED T 1 5 BK ON BOARD COMPUTER 9 C101 ONLY 5 BK 6 MOTRONIC ENGINE SPEED CONTROL OUTPUT UNIT STATE meur 2 SERVICE INTERVAL VR 4 6 PRINTED CIRCUIT KS w Bil diee i cu tdi con wn ag blado a rem sh tni ma io i m 5 Morem gt CODE PLUO SERVICE IN MODULE INTERVAL C SOLIDSTATE PROCESSOR BELOW VOLT OUTPUT 5 VOLT OUTPUT wawa 25 sar im a iei Ui Wb jut ui et a t 4
18. soup SEATBELT STATE CHIME 1 1 L 75 BR GN 78 BR GN 75 BR GN IGNITION SEATBELT KEY SWITCH SWITCH SHOWN WITH OPEN WITH KEY REMOVED DRIVER S SEATBELT BK BUCKLED 78 BR RD 35 BR WT 200 75 GN VI DRIVER S DOOR JAMB SWITCH CLOSED WITH DOOR OPEN 48 5 GN WT mm x s sms tam me 4 b FASTEN S SEATBELTS i BET Q 5 BR YL l TIMER ENABLE 1 HOT IN START OR RUN 78 GN WT ACTIVE CHECK CONTROL UNIT 75 GNAWT POWER INPUT OPERATES FOR ABOUT SECONDS AFTER THE TIMER ENABLE SIGNAL 5 APPLIED GROUND 75 BRAKE lt WARNING SYSTEM POWER FUSE 10 DISTRIBUTION FUSE So 7 DETAILS 711 SEATBELT WARNING F TIMER 6160 0 WIPER WASHER HOT IN ACCY RUN OR START POWER DISTRIBUTION BOX 75 VA BK 0 KIOWIPER CONTROL UNIT 223 OPERATE 50110 STATE CONTROL PAUSE SLOW FAST INPUT GROUND FAST CONTROL 75 BR BK w w i at 75 BK RD 15 BR BK 75 BK RD 1 5 BKAWT 1 5 BK YL A eme a e m mim A enin m M 1 5 BR 2 i WIPER 5 WIPER WASHER C 2
19. 404040242020 At base of shift In front of radiator Front RH side of auxiliary fan On top of LH front shock tower Above LH horn behind splash guard On transmission In RH rear of trunk Engine compartment at RH bulkhead Behind Behind cowl inside blower housing Above LH horn behind splash guard Left of engine on brake fluid reservoir On brake pedal support above brake pedal On LH front and RH rear brake calipers Below and behind LH front speaker Mounted on LH dash hush panel Above clutch pedal Upper LH side of steering column Lower RH front of engine on compressor Behind A C face plate In front of LH front wheel well in coolant reservoir Front of engine top of thermostat housing Front of engine top of thermostat housing Forward of LH front shock tower Mounted under RH side of dash On ignition wire at distributor Top LH front of engine Rear part of each door n s s 9 q q n s q mI e s s e s q o s n8 In rear of LH front door Top RH side of radiator Lower RH front Below LH side of throttle body Page Figure 7000 7000 6 2 5 2 0 4 6 6 0 6 8 4 7 6 COMPONENT LOCATION CHART 9000 1 COMPONENTS Page Figure Evaporator Temperature Regulator Behind front of console near eva
20. EE 679208 Figure 2 Under RH Side of Rear Seat Figure 4 LH Front Of Trunk Figure 6 RH Rear Of Trunk COMPONENT LOCATION VIEWS 7000 9 THROTTLE SWITCH ENGINE SPEED SENSOR BOARD COMPUTER HORN B C HORN DIODE n a PURGE VALVE 69408 Figure 1 Under LH Side of Front Bumper Figure 3 Lower RH Front Of 2 5i Engine Figure 5 LH Side Of 2 5i Engine Splash Guard Pulled Down CYLINDER IDENTIFICATION AERE Figure 2 RH Front Shock Tower Figure 4 RH Front Of 2 5i Engine Cover Figure 6 Under LH Side of Dash Removed 7000 10 LOCATION VIEWS LEFT TANK FUEL SENDER Figure 1 Under LH Side of Rear Seat 8000 0 SPLICE LOCATION VIEWS This index lists all the splices in the vehicle the harness location of each splice and the page on which each splice appears The drawings after the index show how the harnesses are routed through the vehicle and the location of the splices on the harness SPLICE HARNESS PAGE SPLICE HARNESS PAGE NUMBER NUMBER S100 MAIN 8000 2 S225 MULTI S103 MAIN 8000 2 FUNCTION NOT S104 ENGINE 8000 3 CLOCK SHOWN S105 ENGINE 8000 3 S226 AIR NOT S106 ENGINE 8000 3 CONDITIONING SHOWN S107 ENGINE 8000 3 S228 CRUISE NOT S108 ENGINE 8000 3 CONTROL SHOWN S109 ENGINE 8000 3 S229 AIR NOT S110 A C NOT CONDITIONING SHOWN SHOWN S230 MAIN 8000 2 S111 ENGINE 8000 3 S231 MAIN 8000 2 S112 ENGINE 8000 3 S232 M
21. FRESH SWITCHES IRGULATIN E 3 1564 RECIRCULATING RECIRCULATING AIR AIR FRESH RECIRCULATING bee 4 M AIR FLAP DOORS 8 PLENUM SIDE SEE HEATING AND AIR CONDITIONING BLOWER CONTROLS FRESH lt AIR RH FRESH LH FRESH RECIRCULATING RECIRCULATING AIR RELAY AIR RELAY FRESH RECIRCULATING AIR FLAP DOOR MOTORS SEE GROUND DISTRIBUTION AIR DELIVERY CONTROL 6421 1 CIRCUIT OPERATION When the Ignition Switch is in RUN battery voltage is applied to terminal 7 of the Control Switches the normally open contacts of the LH Fresh Recirculating Air Relay and the nor mally closed contacts of the RH Fresh Recir culating Air Relay If the Fresh Recirculating Air Switch is not depressed open battery volt age is applied through the normally closed con tacts of the RH Fresh Recirculating Air Relay to both Fresh Recirculating Air Flap Door Motors and then to ground through the nor mally closed contacts of the LH Fresh Recir culating Air Relay Both motors operate and move the Fresh Recirculating Air Flap Doors to position A allowing fresh air to enter the blower When the Fresh Recirculating Air Switch is depressed closed battery voltage is applied through the switch to both the LH and RH Fresh Recirculating Air Relay coils Both relays are energ
22. PRINTED 2306 PRINTED 3 m SOLID STATE j SPEED omi t T 17 AUTOMATIC pane TRANSMISSION 1 apo RANGE SWITCH s BU YL 5 BU GN 1 4 o 219 SBU YL CRUISE 5 BU BK CONTROL n ool 5 UNIT 15 28 gm wan wna n wan 4 mmm mmm 77 59 POWER RESUME OECELERATE ACCELERATE 0 VEHICLE SPEED 1 75 BR Fon CRUISE CONTROL TORE 140 SET SETSPEED INPUT INJECTION d NM S ELECTRONICS GROUND THROUGH STOP LIGHTS E 5 BU BR WHEN BRAKE SWITCH IS CLOSED gt 2 ove ciate CRUISE GROUND IS ELECTRONICALLY REMOVED Wu p FNABLE WHEN CLUTCH SWITCH 18 OPENED GROUND FEEDBACK FEEDBACK CLUTCH CONTROL n MOTOR 1 ISMECHANICALLY REMOVED GROUND REFERENCE INPUT OUTPUT i V wisa isa mas er es dab mss qi sm aus ae di aaj us s aza
23. 1988 BMW 325 3251 32515 Electrical Troubleshooting Manual Back to start Page BMW of North America Inc Back to Start Page Contents Page Montvale New Jersey FOREWORD In the interests of continuing technical development work we reserve the right to modify designs and equipment Printed in USA Copyright BMW of North America Inc Not to be reproduced wholly or in part without written permission of BMW of North America Inc P N 01 00 1 467 826 1988 BMW 325 325i 325is Electrical Troubleshooting Manual CONTENTS Index How To Use This Manual Symbols Wire Size Conversion Chart Systematic Troubleshooting Connector Views Power Distribution Box FuseData Component Location Chart Component Location Views Splice Location Views 8500 0 0670 0 0670 1 9000 0 7000 0 8000 0 Active Check Control Air Delivery Control A C Blower Controls A C Compressor Controls A C Temperature Control Antilock Braking System ABS Auto Charging Flashlight Auxiliary Fan Auxiliary Brake Warning System Central Locking 2 Door 4 Charge Cigar Lighter Component Location Chart Component Location Views Connector Views Cruise Control Fuel Economy Gauge FuelGauge Fuse Data Chart Fuse Details 06
24. Ifboth voltages are correct check connec tions at Evaporator Temperature Reg ulator 1 Check that the Compressor Enable Switch is closed If the Compressor Enable Switch is open replace the A C Control Panel If the Compressor Enable Switch is closed check for an open in the WT and GN BR wires 2 Replace the A C Select Switch F COMPRESSOR CYCLING TEST Check High Pressure Cut Out Switch Check BK wire to terminal 2 of Evaporator Tem perature Regulator for an open or short Repair replace as necessary 6454 0 AUXILIARY FAN HOT IN RUN ONLY FROM UNLOADER RELAY K7 30 i 1 d GN 75 GN BK gt POWER 11 non DETAILS DISTRIBUTION 1WT CLOSED _ 9 F 0 4 C OMe doen erum d 1 1 i CONTROL SWITCHES mornar AIC SELECT SWITCH F Ate fe 75 BK BR A C COMPRESSOR 1BK VI CONTROLS 2 1 BK VI 1 BK VI 5228 15K iii ide e dai i dco d ad Sa 08 BR pm EVAPORATOR REQUEST TEMPERATURE N 2 RD BK 3 4 BK GN 1 wur REGULATOR p AN LU 80110 C113 RD AUXILIARY ci STATE AUXILIARY NORMAL SPEED BLOWER RESISTOR Grn 6 OHMS J5 BR BR 1 113 2 5 e
25. ON BOARD COMPUTER M RELAY BOX SEAT BELT WARNING TIMER 7000 6 COMPONENT LOCATION VIEWS EVAPORATOR TEMPERATURE REGULATOR SLIP RING Underside of lli Steering Wheel PE TEMPERATURE Wa SENSOR Figure 1 Under Steering Column FRESH RECIRCULATING AIR FLAP DOOR MOTOR HOT WATER CUT OFF SWITCH WATER SHUT OFF ME SOLENOID p 67949 Figure 4 Top of Steering Column HAZARD m ON BOARD SWITCH COMPUTER MODULE SUNROOF i ACTIVE CHECK CONTROL UNIT n pep 4 EP OS m Figure 6 Center of Windshield Header COMPONENT LOCATION VIEWS 7000 7 REAR WINDOW SAFETY SWITCH eee CRUISE CONTROL MOTRONIC 1 UNIT CONTROL j EN UNIT AUTOMATIC TRANSMISSION RANGE SWITCH P enon Figure 1 Center Console Figure 3 Under RH Side of Dash di i Figure 2 Rear of Center Console Figure 4 At Base of LH Pillar 610909 Figure 5 At Base of RH Pillar AUTO CHARGING FLASHLIGHT CONNECTOR 7000 8 COMPONENT LOCATION VIEWS Figure 1 Under LH Side Of Rear Seat V G106 Behind Amplifier FUEL TANK GAS FILLER SENDER LOCK MOTOR REAR LIGHT CHECK RELAY ABOVE AMPLIFIER 67939
26. iary Cooling Fan runs Move Center Slide Lever to the extreme left A C button is no longer lighted A C Compressor turns off Auxiliary Cooling Fan turns off Move Bottom Slide Lever to the center A C button lights A C Compressor turns off Auxiliary Cooling Fan runs Press A C button to release it OFF A C button is no longer lighted A C Compressor turns off Auxiliary Cooling Fan turns off Set Blower Speed Control to 0 OFF Blower turns off If ali of the steps can be completed as described the Heating and Air Conditioning System is operating normally 6411 0 A C TEMPERATURE CONTROL HEATING AND AIR CONDITIONING HOT WATER CONTROL r N DISTRIBUTION A C CONTROL PANEL HOTWATER FUSE I DETAILS 5 GN B 1 WATER WATER CUT OFF SWITCH i SWITCH IS OPENED WHEN ROTARY TEMPERATURE CONTROL 1 ROTATED BY MORE THAN 20 FROM COLDEST POSITION CIN LINE FUSE 2 3 5 BU WATER SHUT OFF SOLENOID SHUTS WATER OFF TO HEATER CORE WHEN ENERGIZED 5 BR GROUND 52 kama ene DISTRIBUTION A C TEMPERATURE CONTROL 6411 1
27. replace the Evaporator Temperature Reg ulator Check the VI wire for an open between the Evaporator Temperature Regulator ter minal 2 and High Pressure Cut Out Switch see schematic Check the BK WT wire for an open or a short to ground see schematic Check the BR wire from terminal 6 to splice S229 for an open see schematic If wires are good replace the Evaporator Tem perature Sensor Continued on next page 6452 4 COMPRESSOR CONTROLS Continued from previous page 3 Check BK YL wire at terminal 5 for an open between terminal 5 and High Pres sure Cut Out Switch D IDLE SPEED CONTROL VOLTAGE TEST Measure VOLTAGE At MOTRONIC CONTROL UNIT CONNECTOR Connected Universal Adapter Conditions gnition Switch RUN A C Control Panel A C ON Temperature Outside Car Above 60 degrees F 16 degrees C Measure Correct For Diaanosis Between Voltage 9 40 BK GY amp 41 VI GY amp Ifthe voltage is correct repair replace the Motronic Control Unit 1 Check for an open in the BK G Y and BK RD wires 2 Check for an open in the VI GY and BK VI wires E A C SELECT SWITCH VOLTAGE TEST Measure VOLTAGE At CONTROL SWITCHES CONNECTOR Connected Conditions gnition Switch RUN A C Control Panel A C ON Temperature Outside Car Above 60 degrees F 16 degrees C Measure Correct For Diagnosis Between Voltage 9 4 WT 8 2 BK VI amp
28. 5 YLANT 8 1 5 WT BK 36 37 32 3 POWER PRESERT POWER PUMP RELAY INPUT PUM CONTROL CONTROL RATE uod 11 1 spp W 00 INJECTION ELECTRONICS 1360 7 2 5 RTAS 5 2 5 RT WS a ARDMT FROM C MAIN RELAY PAGE 1360 6 1 RDMT 5 RD WT 5 FUEL I 7 EVAPORATIVE T INJECTORS x PURGE PEED 3 VALVE ACTUATOR 5 BR WT 5 BRAT 5 BRWT 8 BR YL 5 BR YL 5 BR YL COMPRESSOR e CONTROLS 106 5 BR 55 BRAT 5 BR YL 1WT YL 1WT GN 1 BK VI C191 2 6136 7 191 1 5 BRAT 5 VI GY 1 5 BR YL MOTRONIC CONTROL UNIT FROM SENSOR RELAY PAGE 1360 8 1 SHIELD 3 1 5 BR OR 1 1 5 BR GROUND 3111 4 BR CYLINDER IDENTIFICATION SENSOR 1360 8 INJECTION ELECTRONICS CONNECTOR POWER 16 DISTRIBUTION BOX 1 5 GNWT 5 GNAWT INSTRUMENT CLUSTER A C COMPRESSOR CONTROLS 1 GN BU 9 5703 15 BK RD 5 BR GN 1 GN BU 1 2 0136 5 0 OXYGEN 5 BK GY SENSOR PAGE 1360 7 MOTRONIC CONTROL UNIT INPUT LL educ iiem Gu ae ias s 19 45 52 53 5 BR RD C191 5 BR BU 5 BR BK 5 BR RD 1 3 1 1 CO
29. CIRCUIT OPERATION Water Shut Off Solenoid controls the flow of engine coolant through the heater core When the solenoid is energized coolant flow is shut off to allow maximum cooling from the air conditioning system The Water Shut Off Sole noid is controlled by the Hot Water Cut Off Switch which is part of the A C Control Panel TEMP Control Battery voltage 15 applied through Fuse 20 to the Hot Water Cut Off Switch when the Igni tion Switch is in RUN The Hot Water Cut Off Switch is closed when the TEMP Control is rotated fully counterclockwise coldest posi tion and opens when the control is rotated more than 20 degrees in a clockwise direction When the switch is closed battery voltage is applied through the A C In Line Fuse to the Water Shut Off Solenoid The solenoid is ener gized and shuts off the coolant flow through the heater core Water Shut Off Solenoid and A C In Line Diode are protected by the A C In Line Fuse If any failures occur in the solenoid the Fuse will isolate them to prevent the failures from affect ing other parts of the heating and air condition ing circuits TROUBLESHOOTING HINTS Try the following checks before doing the Sys tem Diagnosis 1 Check that Water Shut Off Solenoid connec tor is firmly seated 2 Check the A C In Line Fuse Goto Heating and Air Conditioning 6410 0 System Check for a guide to normal operation Go to System Diagnosis for diagnostic te
30. I 60110 STATI E d TEMPERATURE iym REGULATOR co s MONITOR ad 5 5 BK YL 5 VI 14 o emer Ims A a 204 1 5 BK WT HIGH PRESSURE CUT OUT SWITCH 15 BK YL OPENS ABOVE 385 PSI 26 5 BAR CLOSES BELOW 307 PSI 21 2 BAR 1 5 BK RD 15 BK RD 1 5 BK RD FLAT LOW PRESSURE CUT DUT SWITCH OPENS WITH LOSS OF REFRIGERANT COMPRESSOR CL 136 A C 10 ROTARY COMPRESSOR CLUTCH AIC NS 5 BK GY COMPRESSOR COMPRESSOR 40 eer 1 MOTRONIC INPUT CONTROL i UNIT 1 6452 2 COMPRESSOR CONTROLS CIRCUIT OPERATION When the Ignition Switch isin RUN battery voltage is applied through Fuse 20 to the Com pressor Enable Switch This switch is located the A C Control Panel and is closed when either the center or lower slide levers are moved about of the distance away from the left position This ensures that the A C Compressor does not run unless there is enough air flow to prevent freezing of the evaporator When the A C Select Switch is pressed and the Compressor Enable Switch is closed volt age is applied to terminal 3 of the Evaporator Temperature Regulator The Evaporator Tem paerature Regulator applies voltage from ter minal 5 to the Compressor Clutch through the High Pressure Cut Out Switch the Low Pres sure Cut Out Switch and the Temperature Switch M3 engine The High Pressu
31. If Low Pressure Cut Out Switch is open check refrigerant pressure to be sure it is normal before replacing switch Replace the A C Temperature Switch if it is open and engine coolant temperature is below 226 F 108 C Battery C EVAPORATOR TEMPERATURE REGULATOR VOLTAGE AND RESISTANCE TEST TABLE 1 Measure VOLTAGE At EVAPORATOR TEMPERATURE REGULATOR CONNECTOR Disconnected Conditions Ignition Switch RUN A C Selector Switch Measure Between Voltage 3 amp Ground 3 amp 4 Battery 3 amp 6 See 3 If all voltages are correct go to Table 2 Check the BK VI wire for an open see schematic If wire is good do Test E Check the BR wire from terminal 4 for an open see schematic Check BR wire for an open Check the BK VI wire for a wire to wire short to voltage If wire is good replace the A C Selector Switch COMPRESSOR CONTROLS 6452 3 C EVAPORATOR TEMPERATURE REGULATOR VOLTAGE AND RESISTANCE TEST TABLE 2 Measure RESISTANCE At EVAPORATOR TEMPERATURE REGULATOR CONNECTOR Disconnected Conditions Ignition Switch OFF Negative Battery Terminal DISCONNECTED Measure Correct Eor Diaan is Between Resistance 9 Approxi 2 Ground mately 3 to 4 See 1 ohms Approxi mately 3 5K to 4 5K ohms See 2 1 amp Ground at 70 F 21 C Less than 0 5 ohms If all resistances are correct but Com pressor Clutch does not operate normally
32. No doors unlock If all the doors unlocked in Operation 3 repair replace the Passenger s Door Lock Switch If the doors did not unlock in Operation 3 perform Test C 6 Get in the car and close and lock all doors Doors remain locked None proceed to Operation 7 Turn the Ignition Switch to RUN Repair replace the Central Locking Control Unit 7 Get out of the car All doors can be unlocked None proceed to Operation 8 Insert the key in the Driver s door and turn All doors remain secure Disconnect the connector from the Central to LOCK Locking Control Unit and check for a short to Unlock each of the doors by pulling up the ground in the wires at terminal 11 Safety Catch Buttons If short to ground is not present replace the Central Locking Control Unit If short to ground is present isolate wiring from Door Lock Motors one at a time to find short OPERATION 3 Turn the key to UNLOCK No doors unlock All doors lock 4 Insert the key in the Passenger s door and turn to LOCK 5 Insert the key in the Passenger s door and All doors unlock turn to UNLOCK 5126 2 CENTRAL LOCKING VE tht gt P T SYSTEM CHECK TABLE CONT D REPAIR ACTION Trunk locks None proceed to Operation 9 Trunk does not lock If the doors lock repair replace the Trunk Lock Mo
33. PAGE 6411 0 PAGE 6413 0 PAGE 6421 0 PAGE 6421 0 0670 10 POWER DISTRIBUTION HOT AT ALL TIMES 1RD GN 75 RD GN 25 RD GN 38 RD GN 75 RD GN 35 RD GN C302 ACCESSORY CONNECTOR 2 15 RD GN 75 RD GN 5 RD GN 21 U _ 2424 LIGHT LH DOME ACTIVE CHECK CHIME INSTRUMENT DIGITAL LH DOME LL odas 15 RD GN ILL LL LL PAGE 6320 0 LIGHT CONTROL UNIT MODULE CLUSTER RADIO PAGE 6216 2 PAGE 6131 0 PAGE 6210 2 PAGE 6500 0 PAGE 6330 0 5 RD GN 5 RD GN e 5219 phum GLOVE AUTO CHARGING LIGHT FLASHLIGHT NL 5 PAGE 6100 1 POWER DISTRIBUTION 0670 11 HOTATALLTIMES HOTINRUNORSTART POWER POWER DISTRIBUTION DISTRIBUTION BOX BOX 1 5 RD BK 75 1 5 GN YL 5234 1 5 RD BK H 3302 ACCESSORY CONNECTOR 3 caos 1 5 RD BK 1 5 RD BK 75 GN WT 1 5 RD BK a 5309 DIAGNOSTIC 1 5 1 5 RD BK 1 5 RD BK CONNECTOR gt inD BK E s 2 5 GNANT 1 5 RO BK 1 5 RD BK 5 AMPLIFIER B C BOARD INTERIOR PAGE 6500 1 HORN COMPUTER LIGHT DIODE HORN TIMER PAGE 6581 3 PAGE 6581 3 CONTROL PAGE 5126 0 PAGE 6330 0 U _ _ _ 0670 12 POWER DISTRIBUTION FOR ENGINE I SPEED SENSDR SEE PAGE 1360
34. SWITCH Noo mee SHOP PARK gus i 5 1 5 BR 6201 GROUND ON STEERING COLUMN 8 6200 6210 0 INSTRUMENT CLUSTER IGNITION SWITCH MULTIFUNCTION CLOCK ON BOARD COMPUTER HEADLIGHTS FOG LIGHTS LIGHTS TURN HAZARD 2 5 GN ee 5213 am mum 5 GY VI 5 YL BR 5 BU RD 5 BU BK m DISTRIBUTION SGN CLUSTER NOT USED 13 C3 1244 C1 22AX C1 PRINTED CIRCUIT RH TURN INDICATOR REE BN 12 Tc nv 7703 5 NOT USED sBuvil sBu vt 5 BR RD NOT USED 5 BU CRUISE INJECTION 5 BR RD 5 BR CONTROL ELECTRONICS 5 BR 588 Y ON BOARD COMPUTER CHARGING SYSTEM 77 SPEEDOMETER SENDER ROTATING DISC MAGNETICALLY OPENS AND CLOSES SWITCH NOT USED FUSE DETAILS INSTRUMENT CLUSTER 6210 1 INSTRUMENT CLUSTER 5 5 BR GY 5 WT BK 4 R C101 M 5 BR GY 5 BK BR 5 4 fe 191 191 5BR ACTIVE 5 BR VI ON BOARD 548610 CHECK COOLANT COMPUTER T CONTROL a TEMPERATURE SENDER 5 BR GN ON BOARD TANK COMPUTER 3 0191 SWITCH CLOSES 5 BR WHEN TANK 011 PRESSURE 20 c101 CONTAINS LESS SWITCH 2 THAN 1 5 GALLONS OPENS AT 18 7 TO 2 1 PSI 6210 2 INSTRUMENT C SERVICE INTERVAL INDICATOR LUSTER 2
35. sn es 9 23 24 26 8 13 25 FOR MANUAL 5 GY RD K 5 GN YL 5 BK 5 BUNT TRANSMISSION 614315 4 7 6 5 2 TAPED TO SR m 4 0208 CRUISE CONTROL HARNESS 5 GN RD 5 7 CRUISE CONTROL ee ACTUATOR 5 OUTPUT BR FEEDBACK POTENTIOMETER T 5BR 3 228 5 TO THROTTLE 5 VALVE 0142 5 GN RD 1 LIGHTS 5223 C209 6581 0 MULTIFUNCTION CLOCK HOT AT ALL TIMES IN ACCY RUN OR START HOT AT ALL TIMES 777 POWER POWER T 7777777 POWER DISTRIBUTION DISTRIBUTION gj DISTRIBUTION DISTRIBUTION ewe 1895 BOX 4 n 1 RD GN LIGHT FUSE 319 wan 521 178 GY RD 5 RD GN LIGHT SWITCH DETAILS 10 C103 75 GY RD dni INSTRUMENT C CLUSTER _ NOT USED 5 GY RD PRINTED CIRCUIT em 123 5 RD WT 2 5 GY VI m 3 RUP 5 1 1 I 1 S pem memi ma ihah E Ae mem 20 5 9 11502 Hur 834 1 ead uai qs ier tus AD GG UNS PM db Mae
36. 7 ne e m e FOR ENGINE SPEED SENSOR SEE PAGE 1360 7 7 V I 1 HIELD FOR OXYGEN SENSOR SEE PAGE 1360 1 4 t E3 m FOR CYLINDER INDENTIFICATION SEE PAGE 1360 7 35 a 2222 34 SHIELD FOR CYLINDER 1 IDENTIFICATION 525558 SEE PAGE 1360 7 lt 1 5 BR OR 7 os N 4 58R 0R 2 5 BR 2 5 BR awa P 1 5 BR a MOTRONIC CONTROL LEVEL THROTTLE UNIT SENSOR SWITCH 2 5 BR OR 701 E 1 5 BR OR 6103 ON RH SHOCK TOWER 2 2 5 BR 5 BR 2 amp 2151 5 BR OR 1 5 BR 2 SHIELD FOR MOTRONIC e CONTROL UNIT e SEE PAGE 1360 0 COOLANT TEMPERATURE SENSOR DIAGNOSTIC CONNECTOR 2 19 FOR DIAGNOSTIC I CONNECTOR PIN 1 SEE PAGE 1360 0 1 4 I 1 1 4 errs NDS 22 41 SHIELD FOR IGNITION I COIL SEE PAGE 1360 0 l 4 75 BR OR Sal OXYGEN SENSOR 75 c POWER DISTRIBUTION 0670 13 LH FRONT LH FRONT RH FRONT RH FRONT RH LH FOG SIDE MARKER TURN PARK RH HIGH TURN PARK SIDE MARKER FOG LIGHT LIGHT LIGHT BE
37. POWER DISTRIBUTION 4256 25612 wan wan wam o 22222 DISTRIBUTION 2 5 BK YL UNLOADER RELAY COILS ARE GROUNDED THROUGH STARTING MOTOR EXCEPT WHEN STARTING WHEN STARTING BATTERY VOLTAGE IS 10 200 APPLIEO TO BOTH SIDES UNLOADER RELAY COILSAND RELAYS ARE DE ENERGIZEU POWER 2 5 BK VL TO INSTRUMENT 5 BK GN 5 BK GN BATTERY CLUSTER PAGES 240 JUNCTION 1360 4 62103 233 585 BLOCK 34350 6581 3 ee USED CONNECTOR 18 C101 15 AR C101 CHARGING SYSTEM 75 BK GR STARTER 2 5 BK YL 2 5 BK YL DIAGNOSTIC A RP RR O 11 CONNECTOR 5107 1240 1 1360 0 INJECTION ELECTRONICS mT IGNITION 1 WITCH 777 IGNITION DIAGNOSTIC CONNECTOR 19 7777 OXYGEN OXYGEN 22 SENSOR SHIELD wai AIRINLET t 7 TEMPERATURE 5 22 EUM Es ENGINE ENGINE FUEL E es x 111 RATE E RICE CONTROL OUTPUT QUTPUT am wa sn sa aaa uw V wa wa wis iis iod dad ND i ui wa asa saa sn s vm cna Boece ud D a a TEST 55 U 39 15 6 32 mmm mnam INSTRUMENT CHECK JfLUSTER CLUSTER ENGINE TACHOMETER INDICATOR FUEL ECONOMY
38. an open in the wiring If wire is OK replace Fader Control 3 Check between pin 6 Fader to pin 19 Amplifier for an open in the wiring If wire is OK replace Fader Control 4 Check between pin 2 Fader to pin 20 Amplifier for an open in the wiring If wire is OK replace Fader Control D SUSPECT SPEAKER TEST Connect OHMMETER At SUSPECT SPEAKER Disconnected Condition Ohmmeter Terminals 1 Ohmmeter set on Rx 1 scale or Diode Check Scale Connect across Speaker If the result is correct check wires to the Amplifier for opens or shorts If wires are OK check the related wire between Fader and Amplifier Replace the suspect Speaker NOISE DIAGNOSIS With Radio on and noise present unplug the Antenna at the back of the Radio If noise is no longer present it was being picked up by the Antenna Perform Antenna Noise Test If noise persists it is coming in the Radio wiring Refer to the following Noise Symp tom Table ANTENNA NOISE TEST Measure RESISTANCE At ANTENNA Measure Correct For Diagnosis Between Resistance Antenna Plug Base If both resistances are correct check the hood ground strap If OK substitute dif ferent Antenna at Radio If good replace Antenna If noise is still present refer to Noise Symptom Table Check ground contact at Antenna base If necessary install a br
39. before doing the Sys tem Check 1 Check power input to the Radio by observ ing if Instrument Cluster Indicators light 2 Check power input to Antenna by observ ing the Cigar Lighter 3 Check memory power to Radio by checking operation of the Glove Box Light 4 Check power input to the Amplifier 5 If Fader Control has no effect but sound is heard from all speakers replace the Fader Control 6 Check that the Antenna is properly con nected 7 Before troubleshooting a suspect Speaker check all connections to that Speaker 8 If display shows CODE and Radio will not operate the individual Anti Theft Code must be entered Refer to Anti Theft instruction booklet 9 Check Radio Fuse located on back of Radio 10 Check Amplifier Fuse located on back of Amplifier Go to System Check for a guide to normal operation to System Diagnosis for diagnostic tests SYSTEM CHECK Use the System Check Table as a guide to normal operation Refer to System Diagnosis for a list of symp toms and diagnostic steps SYSTEM CHECK TABLE ACTION NORMAL RESULT With Ignition Antenna extends Switch in RUN turn Digital display Radio ON lights Sound is emitted from all Speakers Operate Fader Sound volume varies Control from front to rear Refer to System Diagnosis when a result is not normal SYSTEM DIAGNOSIS Do the tests listed for your symptom in the Sym
40. e 1 su m 12 UE 77771 ACTIVE p NOTUSED ro ee i r r Pod r I CONTROL vss ACCESSORY di 1 4 1 d wr box CONNECTOR erd 63140 2 ASHTRAY EAR REAR LIGHTS HAZARD REAR 5 GY RD PLATE REAR LIGHTS AINE DEFOGGER 75 GY RD LIGHT LIGHT CHECK RELAY CHECK CHECK RELAY SWITCH PAGE s3001 CONTROL PAGE 6320 0 PAGE 6300 0 SWITCH 38 GY RD 5 GY RD PAGE 6300 1 PAGE 6320 0 PAGE 6100 2 M PAGE 03146 5 GY RD 5 GY RD 75 GY RD 16Y YL p e 103 5215 ACCESSORY 16YAT us CONNECTOR 23 2 128 5 GY RDM 5 GY RDjY gt gt gt 55 GY RD w WITH SOUND mano 77771 FRONT SYSTEM wANC302 ONLY 4 1 ASHTRAY T5 GY RD u LIGHT E 2 4 7 A C CONTROL a PAGE 6300 1 5 GY RD INSTRUMENT FRONT RH FRONT 8345 CLUSTER TURN PARK SIDE MARKER 1GY YL 38 GY YL LIGHTS 15 GY RD PAGE 6200 1 LIGHT LIGHT nr IPAGE 6300 1 5GY AD M 5GY RD 345 N 0128 PAGE 6314 0 GY Y 35 GY RD J5 GY RD A 35 GY RD J5 GY RD 5 GY RD 1 215 1 P EN RADIO LH FRONT LH FRONT e J NOT USED TURN PARK SIDE MARKER ds LIGHT LIGHT RH REAR ur LHREAR LLL CS REAR LIGHTS SIDE MARKER SIDEMARKER FADER DIGITAL FABER gt CHECK R
41. for an open 6413 0 A C BLOWER CONTROLS ROLS HEATING AND AIR CONDITIONING BLOWER CONTR HOT IN RUN ONLY FROM UNLOADER RELAY K7 TPT TTT POWER I DISTRIBUTION 1 5 GN BR 5 BLOWER AIG SELECT 472 SPEED RECIRCULATING D CONTROL SWITCH A AIRSWITCH ACHIGH x ee RECIRCULATING Y 15 YL 15 YL e 4 5231 M vt owen RESISTORS 1 5 YL 5 BR WT DASH LIGHTS ws 5232 55 BRAWT 1 6 OHMS 3 204 DASH DASH LIGHTS LIGHTS 5 BR WT SAFETY SWITCH 2 0103 OPENS WHEN 5 BRAT RESISTORS DASH LIGHTS gt eza w t 5307 QVERHEAT _ 5 BR WT 3 2 5 BU CIRCUIT OPERATION With the Ignition Switch in RUN battery voltage is applied to the Control Switches and the Blower Speed Control through the GN BR wires If either the A C Select Switch or the Fresh Recirculating Air Switch are ON or the Blower Speed Control is in position 1 battery voltage is applied through the YL wire to the Blower Resistors and the Blower Motor The Blower Motor is a variable speed motor which runs at a speed proportional to the volt age applied to it With all of the Blower Resistors in the circuit the voltage applied to the motor is reduced so the motor runs at a low speed As the Blower Speed Control is moved through positions 2 and 3 some o
42. the problem circuit in the ETM Determine how the circuit is supposed to work by tracing the current path s from the power feed through the circuit components to ground Then based on the symptoms you noted in step 1 and your under standing of circuit operation identify one or more possible causes of the problem 3 Isolate the Problem Make circuit tests to prove or disprove the preliminary diagnosis made in step 2 Keep in mind that a logical simple procedure is the key to efficient troubleshooting Test for the most likely cause of failure first Try to make tests at points which are easily accessible 4 Repair the Problem Once the specific problem is identified make the repair using the proper tools and safe procedures 5 Check the Problem Operate the circuit to check for satisfactory circuit operation Good repair practice calls for rechecking all circuits you have worked on TROUBLESHOOTING TOOLS Isolating the problem Step of TROUBLESHOOTING PROCEDURES requires the use of a voltmeter and or ohmmeter A voltmeter measures voltage at selected points in a circuit An ohm meter measures a circuit s resistance to current flow It has an internal battery that provides current to the circuit under test Disconnect the car battery when using an ohmmeter because the battery voltage will cause the ohmmeter to give false readings Also do not use an ohmmeter on solid state components The voltage that the ohmm
43. 0 21 23 27 14 1 75A Heedlights alsofuses 1 2 13 211 Noted 25 16 Ignition Key Warning Seatbelt Warning also Fuse 21 Seatbelt Warning also fuse 21 Service Interval Indicator also fuse 21 Tachometer Fuel Economy Gauges also fuse 21 Gauges Indicators Brake Warning System Back Up Lights On Board Computer also fuses 12 21 23 27 Start Injection Electronics also fuses 9 11 21 Active Check Control also fuses 4 6 21 22 23 Cruise Control also fuse 6 15A 30A Auxiliary Fan also fuses 3 19 20 Auxiliary Fan also fuses 3 18 20 Interior Lights also fuses 21 27 Power Mirrors 30A 30A SIZE COLOR CIRCUIT NAME Heater Air Conditioning 7 7 7 1 3 3 7 Glove Box Light Ignition Key Warning S eatbelt Warning also fuse 10 Injection Electronics also fuses 9 10 11 Interior Lights also fuses 19 27 Radio Antenna also fuses 12 27 28 Trunk Light Active Check Control also fuses 4 6 10 22 23 Service Interval Indicator also fuse 10 On Board Computer also fuses 10 12 23 27 Economy Gauge also fuse 10 Active Check Control also fuses 4 6 10 21 23 Lights Front Park Tail also fuse 23 Lights Front Side Marker also fuse 23 Lights Dash Lights Front Park Tail also fuse 22 Lights Front Side Marker also fuse 22 Lig
44. 0013 1 6 amp L 000000 N 3 2 1 Wiring Face iring Wiring Face DOOR LOCK MOTOR Wiring Face EVAPORATOR TEMPERATURE REGULATOR CONTROL SWITCHES 8500 4 CONNECTOR VIEWS 85 87A 3 2 1 Wiring Face Mating Face FUEL TANK SENDER FADER CONTROL Wiring Face FRESH RECIRCULATING AIR RELAY 6 1 amm J Wiring Face Wiring Face GAS FILLER LOCK MOTOR FRONT TURN PARK LIGHT Wiring Face FLASHER Wiring Face soe Wiring Face FUEL PUMP RELAY FOG LIGHT SWITCH REESE SWITCH Wiring Face HIGH LEVEL STOP LIGHT B060026 111 Wiring Face HOT WATER CUT OFF SWITCH Wiring Face IDLE SPEED ACTUATOR CONNECTOR VIEWS 8500 5 B120006 00 Wiring Face irina f INSTRUMENT CLUSTER C1 C2 Wiring face LIGHT SWITCH 87A 87 86 Wiring Face MAIN RELAY 1 Wiring Face INTERIOR LIGHT TIMER CONTROL B550001 02 Gal 17 65 Gal 63 62 1 Gol Cal Ce s Cal 2 5 Gel 65 Gal Gal 610 Bo Bal Ea Ez 25 Ga Bal 22 61 20 Es Gal kal Gal 82 45 41 Gal 22 Ga 0 Gal Mating Face MOTRONIC CONTROL UNIT 8500 6 CONNECTOR VIEWS 1 2 3 4 1 3 5 7 O O O O Wiring Face Ao 3 4 5 1 4 8 Mating Face ON BOARD COMPUTER m MIRROR CONTROL SWITCH RELAY BOX POWER SWITCHES 1
45. 2 3 8060027 30 86 31B 31 30A Wiring Face 2 4 6 8 OIL LEVEL SENSOR Wiring Face Wiring Face REAR DEFOGGER SWITCH OVER VOLTAGE PROTECTION RELAY 14 26 B060027 00 B040012 01 1 2 3 4 Wiring Face Wiring Face F ON BOARD COMPUTER MODULE Wiring Face POWER MIRRORS REAR LIGHT ASSEMBLY CONNECTOR VIEWS 8500 7 B080015 01 B090001 00 Wiring Face Wiring Face Wiring Face THROTTLE SWITCH REAR LIGHTS CHECK RELAY C1 START RELAY THROTTLE SWIT 060028 01 1 1 6 ama L 2 000000 N Wiring Face TRUNK LID LOCK MOTOR Wiring Face Wiring Face SUNROOF MOTOR CI REAR LIGHTS CHECK RELAY C2 210 Offs ello 5 Wiring Face Wiring Face Wiring Face SUNROOF SWITCH C109 SEAT BELT WARNING TIMER 8500 8 CONNECTOR VIEWS Wiring Face C101 B300001 00 Wiring Face C103 Mating Face C110 Wiring Face C114 55901 Wiring Face C136 B040006 001 Wiring Face C140 B070002 00 Wiring Face 191 1 3 5 7 OO 6 8 Wiring Face C200 Wiring Face C201 CONNECTOR VIEWS 8500 9 7 13 6OOOOOO 1 Wiring Face c202 B120004 01 g ispa sa Pl OOOOO 009000 Mating Face 204 6 1 5 7 2 4 3 Wiring Face 209 1 2 3 8070004 00 loococoel Waras C303 Wiring Face C304 C210 6 3 9 2 8 5 B060025 7 4 Wiring Face C306 Wiring Fa
46. 35 1 5 RD BK ENT 2146 C404 n C405 t5RD BK GNAVEN 5420 406 L TEM a R J5 1 1 5 RD BK m 1 ON BOARD 1 1 GY nD 13 3 1 a ee e edem AMPLIFIER MOUNTED 5 s D IN AMPLIFIER 45 BK VI 5 BK BR LEFT REAR SPEAKER 6500 2 RADIO POWER ANTENNA RADIO ONLY HOT IN RUN OR START HOT AT ALL TIMES HOT AT ALL TIMES ANTENNA DETAILS 75 VIANT 25RD YL 8 319 ous 18 GY RD 15 RD GN d 22 3 wh X SE C302 ACCESSORY SOLID STATE C302 ACCESSORY CONNECTOR CONNECTOR p GY RD 18 VUGY 6302 15 GY RD JE GRE ANTENNA i MOUNTED LEAD 1 C215 27 6215 OF RADIO 0219 TO BOTTOM YL 2 OF PAGE RIGHT CHANNEL FROM 5345 WT TOPOFPAGE YL FROM FADER Mc We CONTROL BOTTOM 188 OF PAGE YL BR DATE 75 BU BR 15 52 P 5 BR Jsvi8R 75 BU BR 5400 313 m NEL MEM LH FRONT SPEAKER RH FRONT SPEAKER dn C302 ACCESSORY 75 YL BR 75 BU BR CONNECTOR 15 15 15 15 2 YL BR YL BK 1 YL BK 21 ad 2226 3 75 BU BR 22775 HERR 1 BR ee ee 0 um OW S J 0 5400 RIGH LH REAR SPEAKER T RH RE
47. 6500 0 RADIO ANTENNA _ _ _ _ WITH SOUND SYSTEM _ POWER 777 7 EUSE 12 DISTRIBUTION ui 2 6 DISTRIBUTION 75 AMP 75 FUSE 5319 DETAILS 2 5 RD YL LIGHT SWITCH DETAILS C302 ACCESSORY 4d bo yo bp CONNECTOR J 2220 122 MERE DUREE 6302 ACCESSORY 65345 CONNECTOR 5 GY RD 15 RD GN VUGY C215 5 GY RD TO AMPLIFIER TERMINAL 13 DIGITAL RADIO PAGE 6500 1 MEMORY POWER LIGHTS ON INPUT RIGHT CHANNEL 118 6213 5 GY RD 5 BR BK FADER CONTROL 5 BR BK 5400 i 1 BR BK 5 BR BK I 4 5 YL 8K 5 YL RD 14 15 19 0 CONNECTOR Lus com 0 AMPLIFIER B on gouinstaTE 0 K aus o ab s uus GS in i ina di die di inh i a si dit cho 6200 RADIO ANTENNA 6500 1 WITH SOUND SYSTEM DISTRIBUTION 175 GY GN 35 GY GN 5 GY GN FROM C233 FUSE ON FACING PAGE SPEAKER DETAILS LEFT 75 RD BK FRONT TWEETER 02 ACCESSORY CONNECTOR 15 GN YL
48. 70 7 0670 9 Gauges suae ee ignition Key Warning Indicators Active Check Control Alarm Brake Lights Fault Lining Wear Warning Charge Coolant Level Fault Engine Fault FastenSeatbelts FogLights High Beam Inspection LH Turn License Fault Low Beam Fault Low Fuel Warning Oil Pressure Warning Service E m c3 c5 442 9 s 9 s s a 4 s INDEX 2 0 Index Alphabetical Listing of Electrical Circuits 0670 12 0670 13 0670 13 0670 13 0670 14 0670 15 0670 14 Brake Rear Lights Fault Washer Fluid Fault Injection Electronics Instrument Cluster Lights A C Control Power Back Up eene FrontAshtray Front Side Marker Front Turn Park GloveBox Hazard Switch Headlights instrument Cluster Interior License Map Reading Light Pak pula sua Rear Ashtray Rear Side Marker Turn Hazard Light Switch Details Multifunction
49. AIN 8000 2 S113 ENGINE 8000 3 S233 MAIN 8000 2 S114 MAIN 8000 2 S234 MAIN 8000 2 S115 MAIN 8000 2 S238 5116 MAIN 8000 2 SHOWN S118 MAIN 8000 2 S239 MAIN 8000 2 S119 MAIN 8000 2 S240 AIR NOT S201 ON BOARD CONDITIONING SHOWN COMPUTER 8000 6 S241 MAIN 8000 2 S202 ON BOARD S300 DOOR 8000 4 COMPUTER 8000 6 S301 DOOR 8000 4 S207 MAIN 8000 2 S302 DOOR 8000 4 S209 MAIN 8000 2 S303 DOOR 8000 4 S210 MAIN 8000 2 S305 DOOR 8000 4 S211 MAIN 8000 2 S306 INSTRUMENT S212 MAIN 8000 2 PANEL 8000 5 S213 MAIN 8000 2 S307 INSTRUMENT S215 MAIN 8000 2 PANEL 8000 5 S219 INSTRUMENT 5308 DOOR 8000 4 PANEL 8000 5 S309 DOOR 8000 4 S221 INSTRUMENT S310 MAIN 8000 2 PANEL 8000 5 S313 RADIO NOT S223 CRUISE NOT SHOWN CONTROL SHOWN S316 MAIN 8000 2 S224 MULTI 5319 MAIN 8000 2 FUNCTION NOT S322 DOOR 8000 4 CLOCK SHOWN SPLICE LOCATION VIEWS 8000 1 SPLICE HARNESS PAGE NUMBER S323 DOOR 8000 4 S324 MAIN 8000 2 S326 MAIN 8000 2 S329 MAIN 8000 2 S330 MAIN 8000 2 S332 DOOR 8000 4 S333 DOOR 8000 4 S340 MAIN 8000 2 S341 MAIN 8000 2 S342 DOOR 8000 4 S345 RADIO NOT SHOWN S400 RADIO NOT SHOWN S402 DOOR 8000 4 S403 RADIO NOT SHOWN S404 RADIO NOT SHOWN S411 DOOR 8000 4 S420 RADIO NOT SHOWN S501 DOOR 8000 4 S502 DOOR 8000 4 S503 DOOR 8000 4 S504 DOOR 8000 4 S700 ENGINE 8000 3 S701 ENGINE 8000 3 S702 ENGINE 8000 3 S703 ENGINE 8000 3 8000 2 SPLICE LOCATION VIEWS MAIN HARNESS SPLICE LOCATIONS TO ENGINE COMPARTMENT TO REAR O
50. AL DEPRESSED STOP LIGHTS 1 GN RO LIGHTS 1 GN RD INSTRUMENT q a LUSTER STOP 5316 5 GN BK 76 GR RD 75 GR RD GR RD YO ABS HYDRAULIC UNIT ON NEXT PAGE OVER VOLTAGE PROTECTION RELAY 18 GN RD 35 BR 5 BR YL FROM 119 ON NEXT PAGE 8200 ABS ELECTRONIC RH REAR LIGHT ASSEMBLY INDICATOR CONTROL CHARGING gu 7580 SYSTEM Pana Q 5230 BU TO ABS HYDRAULIC C101 UNIT ON NEXT PAGE 1 gm 5181 1 5 BR 1 5 BR 35 8U GROUND waw DISTRIBUTION 109 12 DIAGNOSTIC s 1 5 BU ALTERNATOR 1 5 BR 3450 1 ANTILOCK BRAKING SYSTEM ABS TO OVER VOLTAGE CONTINUED FROM OVER PROTECTION RELAY VOLTAGE PROTECTION ON PREVIOUS PAGE RELAY ON PREVIOUS PAGE 75 RD 4 RD POWER DISTRIBUTION 35 RD YL 12 4RD 6 10 Q eq HYDRAULIC x UNIT BATTERY CONTINUED FROM 5118 ON PREVIOUS PAGE 75 GR RD 75 2 5 BR 1 5 BR RD ELECTRONIC CONTROL 4 UNIT LH FRONT SPEED DETECTOR 5116 0 POWER MIRRORS HOT IN RUN ONLY FROM UNLOADER RELAY K7 DISTRIBUTION 18 35 GN WT MIRROR CONTROL SWITCH F INTERIOR 75 WT BK 75 BU WT 1758 35 WT BK 45 BU WT S503 w 75 8U BK 75 BU WT p pe 5 C405 NERGIZED MOTOR Moves U 75 BU WT MIRROR UP AND DOWN RIVER S 75 BUNT 75
51. AM LIGHT LIGHT LIGHT 2 2772 7 7 Sw _ 01022 47 BR BR 1 46 a 138 126 Vn 1 BR 188 C128 18 0127 1 BR 188 188 ion 7388 75 BR 188 1 BR 75 2 5 BR 1BR 5100 ABS S114 AUXILIARY HYDRAULIC WASHER FLUID FAN 75 BR UNIT 4 LEVEL SWITCH mm LEVEL SWITCH tk 4 BR E uod BR 1 2 5 BR 2 5 BR 0113 3 8 C104 ON INNER FENDER BEHIND LH HEADLIGHTS ABS AUTOMATIC OVER ABS ELECTRONIC TRANSMISSION VOLTAGE FADER FADER HYDRAULIC CONTROL RANGE PROTECTION AMPLIFIER CONTROL CONTROL UNT SWITCH n AMPLIFIER 7 r mam H m Hm 4 18 5 BR BK 5 BR BK 5 8R BK 5 BR SYSTEM 0302 ACCESSORY CONNECTOR 1 5 BR 1 BR Fr 6200 PARTIAL UNDER LH SIDE OF DASH ABOVE BRAKE PEDAL ic ON BOARD COMPUTER INSTRUMENT COOLANT SEATBELT RELAY CLUSTER TEMPERATURE IGNITION WARNING PRINTED CIRCUIT SENDER TIMER mm um 1 17 Ld 75 BR 5 200 ABR 75 BR 3 C191 588 2588 20 C101 200 PARTIAL UNDER LH SIDE 0F DASH AB0VE BRAKE PEDAL RH FRESH LH FRESH REAR GLOVE BOX AUTO CRUISE CRUISE WATER RECIRCU RECIRCU EVAPORATOR EVAPORATOR COMBINATION WIPER WASHER DEFOGGER LIGHT CHARGING LIGHT CONTROL CONTROL SHUT OFF LATING LATING TEMPERATURE TEMPERATURE SWITCH S FLASHLIGHT SWITCH SWITCH FLASHER SWITCH A
52. AR SPEAKER e 6200 BOTTOM OF PAGE 6500A 0 RADIO ANTENNA CIRCUIT OPERATION With the Ignition Switch ACCY RUN or START Fuse 12 provides voltage to turn on the three components in the system When the Radio Switch is on voltage is applied to the Radio the Power Antenna Raise Lower Input and the Amplifier This voltage is used to con trol the imdividual unit s main power supply When the Raise Lower Input of the Power Antenna receives voltage power is supplied from Fuse 28 to run the motor and raise the Antenna When voltage is no longer present at the Raise Lower Input the Antenna is lowered Fuse 21 constantly supplies voltage to the Memory Power Input of the Radio This allows the Radio to maintain the present settings while it is turned off Amplifier receives constant power at ter minal 11 from Fuse 27 When the Radio is on voltage is applied to terminal 13 to enable the Amplifier The actual Radio signal originates at the Antenna It is supplied to the Radio processed and output from the Left Channel and Right Channel Outputs to the Fader Control The Fader Control alters the front to rear volume by decreasing the resistance to the desired higher volume outputs The signal is then input to the Left Front Left Rear Right Front and Right Rear Inputs to the Amplifier After amplifica tion the signal is output to the corresponding speakers TROUBLESHOOTING HINTS following checks
53. BOX move the wire harness back and forth and watch the ohmmeter reading Low or no resistance indicates a short to ground in the wiring Infinitely high resistance indicates no short BATTERY DISCONNECTED LOW FLUID n SWITCH 1 5 RD LOAD DISCONNECTED LOW FLUID Short Test Using Ohmmeter S 0 670 0 POWER DISTRIBUTION 4 FRONT OF CAR LOW BEAM CONNECTORS CHECK RELAY C100 C114 AND AND RELAY NOISE WIBER C115 ARE 21 CONTROL UNIT THE UNDERSIGE THE PRINTED OF THE PRINTED CIRCUIT BOARD CIRCUIT BOARD 4 4 1 FUSE 8 8 4 3 211 LOW BEAM 59 cua ee CHECK RELAY FUSES x POWER DISTRIBUTION 0670 1 High Indicator Auxiliary Fan also fuses 18 19 20 15A Lights Turn Hazard Warning also fuse 24 Active Check Control also fuses 6 10 21 22 23 5 230 WiperWasher 7 5A StopLights Active Check Control also fuses 4 10 21 22 23 Antilock Braking System Cruise Control also fuse 10 Map Reading Light 15A Hon Rear Defogger also fuse 23 Injection Electronics also fuses 10 11 21 d Injection Electronics also fuses 9 10 21 Radio Antenna also fuses 21 27 28 Speedometer Indicators On Board Computer also fuses 1
54. BR 75 WT BK MIRROR A C404 GROUND DISTRIBUTION PASSENGER S MIRROR 3 SOLENOID L DNE Pd DISTRIBUTION 5126 0 CENTRAL LOCKING 2 DOOR 5 HOT AT ALL TIMES n POWER lt DISTRIBUTION BOX CENTRAL FROM TERMINAL LOCKING CENTRAL LOCKING CONTROL CONTROL UNIT UNIT ON THIS PAGE 22 15 RD BK ik 5234 16 GN BU DETAILS 300 75 1 5 RD BK 75 YL BU YL BU 19 C404 3 caos TO C405 aient SAFETY 15 RD BK ior TERMINAL 8 CATCH CATCH 75 RH FRONT UED 1 GN GN BU BUTTON DOOR LOCK 1 5 RO BK US OFTHISPAGE i 4 NOT USED 6 MOTOR 15 caps UNLOCK RHERONT gt INHIBIT DOOR MICRO SWITCH 1 5 RD BK B surrcu UNLOEI KE ae INTERIOR 2 LIGHT 1 RO BR 4 a JUD TIMER ma ue 1 7 CONTROL gt 75 75 BR GROUND I 1RD BR TL WT 5502 Omm PA J5WT BU TERMINAL 19 45 10 9 ON THIS PAGE 10 2 was fy 0 PASSENGER S MIRROR ep 75 BU 2580 Ses 6 Eee 332 75 BU i 22 1 5 WT awe UNLOCK CONTINUED 303 FROM J5 WT _ OF TH
55. BU RD RH REAR LIGHT LIGHT ASSEMBLY 3 2 6 ASSEMBLY y INSTRUMENT TR TTT TTT LH FRONT RH FRONT ut CLUSTER TURN PARK 6 3 IURN PARK I PRINTED _ LIGHT LIGHT 21 JUAN TURN TURN PARK PARK TURN GROUND 2 GROUND GROUND GROUN 1 5 BR 1 5 BR GROUND 2 5 BR SBR 5324 DP Gamu LI 8324 5 BR 1 5 BR 4 BR IL 5114 1588 INSTRUMENT CLUSTER PRINTED CIRCUIT 6314 0 PARK TAIL FRONT MARKER LIGHTS HOT AT ALL TIMES T POWER L 77 rust 241 DISTRIBUTION lao de se da ad ed mE ee 1 GY BK 1GY GN 5 GY BK 1GY YL 1 2102 16Y YL 5GY YL 5 1 3103 1GYMT m v 5207 al 209 12 16Y YL 75 GY YL 7 75 GYMT 28 E 1 6128 p 5 CONTROL GY YL 16Y YL b FAULT GY WT 2 an LH FRONT T NT 2 ias RHERONT A LHERONT RH FRONT RH FRONT 9 TURN PARK SID 17 I jy SIDE TURN PARK LIGHT 7 ere 5 GY BR e 1 FARREN 5 t2 4 MARKER LIGHT TURN PARK BR LIGHT r7 dim REARLIGHTS TURN CHECK RELAY GROUND E DISTRIBUTION E LL 7 1 GY BU REAR 6300 p LIGHT GROUND ASSEMBLY DES tar uiris
56. C131 1 Behind RH side of dash above glove 7000 7 3 1367 s re RE Under RH side ofdash 7000 7 3 C140 5 Near RH rear side of engine 7000 1 6 C142 1 Under LH side of dash near steering column 7000 6 4 C143 Under LH side of dash near body electrical bracket 7000 5 6 C150 2pins On top of LH front wheel 7000 0 6 151 2 On top of RH front wheel well 7000 3 1 190 Ee Under RH side of rear 7000 8 2 Lower LH side of engine 7000 2 2 C200 5 Under LH side of dash on steering column 7000 6 4 C201 Under LH side of dash on steering column 7000 6 4 C202 13 Under LH side of dash on steering column 7000 6 4 C204 5 Under side of dash near steering column 7000 6 3 C208 2 Near brake pedal support bracket 7000 5 6 C209 7 Above brake 7000 5 3 210 4 side of steering column 7000 6 4 C215 2 Center console behind radio 7000 6 5
57. C217 2 Under LH side of dash near accessory connector 7000 5 4 C218 2 Behind center of dash 219 2 5 trunk above LH wheel well 7000 8 3 233 2 Behind center 7000 6 5 C240 5 Under LH side of dash above body electrical bracket EC PREMIT IE 7000 5 3 C241 1 Under LH side of dash above steering column 7000 6 4 C260 2 Behind LH side of dash 7000 5 3 C301 2 7000 7 1 C302 25 pins Connector Upper LH corner of driver s footwell 7000 5 4 C303 3 At base of RH pilar 7000 7 5 C304 3pins At base of LH pillar 7000 7 4 C305 1pin Under LH side of dash near accessory connector 7000 5 3 O r 9000 4 COMPONENT LOCATION CHART CONNECTORS Page Figure C300 ux ec one In center console 7000 7 1 C351 1 Under LH side of dash near accessory connector 7000 5 3 C352 2 Behind LH side of rear 5 7000 8 1 C360 2 Behind RH side of rea
58. CTUATOR UNIT SOLENOID AUR RELAY AIR RELAY REGULATOR SENSOR m t TT rm 1BR 2 5 BR STEERING s c0 COLUMN GROUND ON UPPER LEFT SIDE OF 06 x ACTIVE CHECK CIGAR STEERING 1588 CIGAR 2 5 BR COLUMN CONTROL UNIT TER 1 103 7 ue 1 5 BR lis 21 8 2588 2588 e 200 PARTIAL UNDER LH SIDE OF DASH ABOVE BRAKE PEDAL POWER DISTRIBUTION 0670 15 DRIVER S 4 DOOR DRIVER S EXTERIOR INTERIOR CENTRAL RH FRONT DOOR MIRROR 0008 UNLOCK MAP LIGHT _ LOCKING TRUNK RHFRONT DOOR LH REAR RH REAR LH FRONT RH FRONT LOCK CONTROL DRIVER S HANDLE INHIBIT READING CONTROL LOCK PASSENGER S DOOR MICRO WINDOW WINDOW WINDOW WINDOW MOTOR SWITCH MIRROR SWITC LIGHT CONTROL UNIT MOTOR MIRROR LOCK MOTOR Switch CONSOLESWITCH CONSOLE SWITCH CONSOLESWITCH CONSOLE SWITCH LH REAR LH REAR RH REAR RH REAR DOME FUEL TANK LH DOME SIDE MARKER LH LICENSE LIGHT LIGHT RH LICENSE SIDE MARKER REAR REAR LIGHTS LIGHT SENDER LIGHT LIGHT LIGHT ASSEMBLY ASSEMBLY LIGHT LIGHT DEFOGGER CHECK RELAY mm 1 8 BR 2 6300 UNDER LEFT SIDE OF REAR SEAT BACK REST 1230 0 CHARGE mmm mmn POWER DISTRIBUTION BOX 5432 480 9 480 25 RD 585 CONNECTOR NOT USED AUXILIARY 10 RD FUSE DIAGNOSTIC 2 5 GN CONNECTOR POWER 213 DISTRIBUTION
59. ELAY LIGHT LIGHT i CONTROL RADIO CONTR L PAGE 6314 0 PAGE 6320 0 PAGE 6320 0 PAGE 8320 0 6500 0 PAGE 6500 0 AOE B60 PAGE 6320 0 PAGE 6500 0 HOT AT ALL TIMES 1GY GN LIGHT SWITCH DETAILS 6300 1 DASH LIGHT POWER DISTRIBUTION BOX 7 SWITCH vu c E HEAD Pu LM 1 75 GY RD 5 GY RD 5 GY RD REAR 221 DEF GGER 75 a HAZARD 220 AA DN BOARD 5 5 GY RD SGYRD 8 5 GY RD Sms COMPUTER 0 23 C2 8 20 INSTRUMENT 25 6204 5 GY RD 5 GY AD CLUSTER 5 GY RD LIGHT HET E SWITCH 5 0 DASH REAR AY DETAILS FRONT AC LIIGAT ASHTRAY CONTROL eiii CONDITIONING LIGHTS lt 5 BR WT J5 sr m DEFOGGER 6 mmm man LIGHT T 75 BR BK 3 5 BR BK NOT USED SITES C302 103 E TIS t 31 ACCESSORY 2 CONNECTOR 45 Sada 5306 1588 DISTRIBUTION 1 5 BR 6312 0 HEADLIGHTS FOG LIGHTS HOT IN RUN OR START HOT AT ALL TIMES sp r POWER rl p 1 DISTRIBUTION P E EE DISTRIBUTION w n EUSE 29 1 5 AMP j
60. ENT SHOWN PART OF A COMPONENT SHOWN COMPONENT WITH SCREW TERMINALS SOLID STATE INCLUDES ONLY ELECTRONIC PARTS CONNECTOR ON COMPONENT LEAD PIGTAIL CONNECTOR ATTACHED COMPONENT COMPONENT CASE IS DIRECTLY ATTACHED TO METAL PART OF CAR GROUNDED INDICATES THAT FUSE 5 IS ALWAYS SUPPLIED WITH POWER HOT AE ALL TIMES INDICATES THAT FUSE 6 IS SUPPLIED WITH POWER WITH THE IGNITION SWITCH IN THE RUN OR START POSITIONS HOT IN RUN OR START WIRE CHOICES FOR OPTIONS ARE SHOWN AND LABELED 2 5 BK MANUAL AUTOMATIC TRANSMISSION TRANSMISSION 25 BK YL 2 5 BK WIRE SIZE IN MM 2 WIRE IS ATTACHED 5 BR 6103 CONNECTOR REFERENCE NUMBER FOR COMPONENT LOCATION CHART m CHART ALSO SHOWS PIN NUMBER TOTAL NUMBER DF CONTACTS POSSIBLE 35 BU YL C103 6 PIN 25 BU YL WIRE INSULATION A WAVY LINE IS ONE COLOR MEANS A WIRE 1 5 RD IS CONTINUED WIRE INSULATION m 15 ONE COLOR WITH 5 RD BR ANOTHER 2 P COLOR STRIPE RED WITH BROWN METAL PART CAR GROUNDED GROUND IS NUMBERED FOR REFERENCE ON COMPONENT LOCATION CHART OTHER CIRCUITS THAT SHARE A GROUND ARE SHOWN IN GROUND DISTRIBUTION DIODE CURRENT CAN FLOW ONLY IN THE DIRECTION OF THE ARROW CIRCUIT REFERENCE A WIRE WHICH CONNECTS TO ANOTHER CIRCUIT 35 GY YL ACTIVE CHECK CONTROL SYMBOLS 5 NAME 0F COMPONENT
61. F CAR TO CLUSTER AREA S239 5100 5115 C101 5116 5119 5102 5230 DISTRIBUTION 5340 BOX S233 S211 S209 S212 S319 S210 S207 S215 S213 TO STEERING COLUMN AREA CY l iii SPLICE LOCATION VIEWS 8000 3 ENGINE HARNESS SPLICE LOCATIONS DIAGNOSTIC CONNECTOR S104 C101 EUER I ii a s uau a a 8000 4 SPLICE LOCATION VIEWS DOOR HARNESS SPLICE LOCATIONS MIRROR RH DOOR LOCK MOTOR RIGHT FRONT WINDOW DOOR MOTOR 4 DOOR ONLY LEFT FRONT DOOR LH DOOR C401 LOCK MOTOR SPLICE LOCATION VIEWS 8000 5 INSTRUMENT PANEL HARNESS SPLICE LOCATIONS 8000 6 SPLICE LOCATION VIEWS S202 S201 8500 0 CONNECTOR VIEWS DIAGNOSTIC CONNECTOR FACE a Circuit and Component Connected Ignition Coil Motronic Control Unit E WT BK BU WT BK SRS Connector Not Used 5 i rval n ee Service Interva 2 5 Starter Start Signal 50 25 BU Charge Alternator D 14 25 RD 15 5 Motronic Control Unit GN WT Oxygen Sensor Motronic Control Unit Programming Voltage BR Ground Distribution 8103 WT VI Motronic Control Unit TXD CONNECTOR VIEWS 8500 1 CIRCUITS USING C302 ACCESSORY CONNECTOR TERMI
62. IS PAGE GROUND DISTRIBUTION CAUTION 4 DISCONNECT BATTERY BEFORE MOVING OR REMOVING THE CENTRAL LOCKING 188 7588 GROUND CONTROL UNIT RECONNECT BATTERY ONLY AFTER THE CENTRAL LOCKING DISTRIBUTION CONTROL UNIT HAS BEEN PROPERLY INSTALLED IF POWER IS APPLIED 0405 5502 THE CENTRAL LOCKING CONTROL UNIT WHEN IT IS NOT PROPERLY POSITIONED G200 UNIT WILL BE DAMAGED CENTRAL LOCKING 5126 1 HOT AT ALL TIMES 7 IGNITION SWITCH 25GN 5213 75 GN 0 35 GN 0302 ACCESSORY CONNECTOR POWER DISTRIBUTION CAUTION D0 NOT OPERATE THE SYSTEM MORE THAN 8 TIMES IN OUICK SUCCESSION TO PREVENT DAMAGE TO THE CENTRAL LOCKING CONTROL UNIT LOCKING CONTROL UNIT 35 GN VI Pil USED 75 BR BU NOT um NOT USED USED TRUNK LID LOCK MOTOR GROUND DISTRIBUTION e 1 5 8 5126 2 CENTRAL LOCKING HOTATALLTIMES mmm POWER mmm CENTRAL LOCKING CONTROL UNIT 2 c e 188 1 5 RO BK 75 YL BU 75 GN BU 75 GN BU NOT 5234 STAT 300 15 BK USED 5301 rm a 75 GN BU 1 w C503 TO C405 is 11 1 75 YL BU 75 YL BU SAFETY 1 5 RD BK TERMINAL 75 amp 405
63. ITCH COMPRESSOR CLUTCH LOW PRESSURE CUT OUT SWITCH 67907 Figure 1 Behind Cowl Figure 3 Lower RH Front of Engine Figure 5 Behind RH Headlights Cover Removed OIL PRESSURE SWITCH WASHER FLUID LEVEL SWITCH 611104 67940 67908 Figure 2 Lower RH Rear of Engine Figure 4 Lower RH Front of Engine Figure 6 RH Side Of Engine Compartment db AUXILIARY FAN 5 AUXILIARY FAN NORMAL SPEED BLOWER RESISTOR Figure 1 Under Middle of Front Bumper LOCATION VIEWS 7000 3 OUTSIDE TEMPERATURE SENSOR 67916 Figure 2 Under Side of Front Bumper Splash Guard Pulled Down BATTERY JUNCTION BLOCK COVER PULLED BACK 67901 Figure 4 RH Side of Engine Bulkhead BRAKE WEAR SENSOR Figure 5 LH Front Brake Assembly Wheel Removed DETECTOR 67941 gt Lond Figure 6 LH Front Spindle Assembly 7000 4 LOCATION VIEWS K winnow SPEEDOMETER MOTOR SENDER Figure 4 RH Rear of Differential Figure 6 Inside LH Front Door Panel Removed Figure 2 Above RH Front Door Jamb Switch LOCATION VIEWS 7000 5 INTERIOR LIGHT CENTRAL LOCKING CONTROL M CONTROL UNIT 67933 PROTECTION RELAY ABS CONTROL UNIT Figure 2 Under LH Side of Dash 67952
64. L DEPRESSED 2 i 1 GN RD Ys 16 5 GN RD S 5GN RD 6302 ACCESSORY CONNECTOR g ABS 5 PELECTRONIC 15 GN RD x CONTROL UNIT 1 GN RD SWITCH OPENS WHEN 5 GN RD CLUTCH PEDAL IS DEPRESSED C208 75 BR 1 5 GN RD 77777707 stop LH REAR pj BH REAR 18 v LIGHT lt LIGHT e ASSEMBLY ASSEMBLY GROUND 1 5 BR CRUISE DISTRIBUTION am CONTROL 6330 0 INTERIOR LIGHTS HOT IN RUN ONLY FROM UNLOADER RELAY K7 HOT AT ALL TIMES 1 5 RD BK 15 RD BK FUSE 1 HOT AT ALL TIMES T 1 RD GN 75 GN BK 5234 DETAILS 1 5 RD BK PUT 338 0405 3318 5 RD GN 16 GNWT 1 5 RD BK 2 6304 2 6 0303 75 GN WT 1RD B POWER BK USED 5 RD GN FUSE DETAILS 5 RD GN MIRRORS C503 LH DOME RH DOME 35 GN WT 1 5 RD BK 4 LIGHT LIGHT ITE C405 15 1 5 RD BK CENTRAL 75 GN WT 1 5 RD BK LOCKING 3 eoTTUROROTTTTTeETTTTTCTTTTTTTCRTTTTTNURCTTTTTTS INTERIOR r un pe p LIGHT _ TIMER CONTROL S 5BR VI 588 5 BR 5 4 DOOR 75 BR GN REAR 3 303 ONLY 19 BY C405 LH DOOR TEBRIN 71 JAMB SWITCH 3 C50 CLOSED WITH DOOR OPEN 15 BR GN 18 BR VI RH REAR DRIVER S EXTERIOR DRIVER S DOOR eB DOOR HANDLE JAMB SWITCH 15 BR VI SWITCH 0 SWITCH CLOSED WITH 5310 CLOSED WHEN DOOR OPEN 8008 HANDLE di
65. LTAGE TEST Measure VOLTAGE At CONTROL SWITCHES CONNECTOR Disconnected Conditions Measure Between 1 GN BR amp 1 4 3 7 GN BR amp Ground 7 GN BR amp 5 YL 7 GN BR amp 6 BR WT Ignition Switch RUN e Blower Speed Control OFF Correct For Voltage Diagnosis Battery See 1 Ground Battery See 2 amp 4 YL Battery See 1 Battery See 2 amp 4 Battery See 3 If all voltages are correct do Test B Check the GN BR wire for an open Check the YL wire for an open Check the BR WT wire for an open If voltage is not present between the GN BR wire and both the YL wires terminals 3 and 5 do Test B 6413 2 A C BLOWER CONTROLS B BLOWER SPEED CONTROL TEST Measure VOLTAGE AT BLOWER SPEED CONTROL CONNECTOR Disconnected Conditions Ignition Switch RUN A C Select Switch ON Depressed Fresh Recirculating Air Switch FRESH Not Depressed Measure Correct For Diaqnosi Between Voltage 9 4 GN BR amp 7 amp Select Switch OFF Not Depressed 7 YL amp 4 GN BR amp 7 See 4 8 9 amp 4 GN BR amp 1 See 5 8 9 amp 4 GN BR amp 2 See 6 8 9 amp i If all voltages are correct replace the Blower Motor Check the GN BR wire for an open Check the YL wire for an open between Blower Speed Control and splice 5231 Check the YL wire for a wire to wire short to voltage Ch
66. MES LGNITION j SWITCH 1 RD GN 39 539 424 M 5 RD GN PE 2 5 GN CLUSTER TT 5 ADAT CHIME MODULE ON BOARD 4 COMPUTER RELAY FROM IGNITION 1 04 SWITCH PAGES 1240 0 1240 1 1 5 GN 5 5 BR BU 5 BK GN LE 22 5 BK YL POWER 521 DISTRIBUTION V Qiii Qu Qa ees qua aam aco ceo mas i du c il d I MOTRONIC ON BOARD COMPUTER CONTROL UNIT INJECTION ELECTRONICS 1360 5 DISTRIBUTOR AR FLOW SPARK PLUGS DIAGNOSTIC 777 IGNITION CONNECTOR _ 19 1 I 18K MN T 3 5 5 56vwr SHIELD f 1 5 BR pusa mmm 510 DIAGNOSTIC V z NNECTOR ca SHIELD CONNECTOR I 1 18 18 20 15 em Y 1 113 1 5 5 WT VI 2 5 BK 3 26 1 12 5111 ee mmm eo syn pan sm wa m m mm PU TION 75 BR OR TACHOMETER FUEL ECONOMY GAUGE 1360 6 INJECTION ELECTRONICS FUSIBLE LINK A DIAGNOSTIC CONNECTOR 0 5112 PAGE 1360 7 1 5 GN VI 2 5 VI RD 1 5 T7777 POWER TACHOMETER 1 DISTRIBUTION FUEL ECONOMY BOX GAUGE US
67. NAL CIRCUIT TERMINAL CIRCUIT WA 6 0 Not Used N Not Used Not Used Not Used C Anti Lock Braking P Not Used D Central Locking Power Windows amp E Not Used Sunroof F Not Used R Cruise Control W G Anti Lock Braking S Anti Lock Braking H On Board Computer T Not Used 9 9 e 1 Not Used U Not Used 9 J Not Used V Radio K Not Used Radio L Not Used X Radio M Not Used Y Radio 2 Figure 1 302 Accessory Connector Front View Under LH Side of Dash Ahead of Pedal Assembly Power Antenna 8500 2 CONNECTOR VIEWS B350002 Mating Face ABS CONTROL UNIT B120014 Wiring Face ABS HYDRAULIC UNIT Wiring Face ACTIVE CHECK CONTROL 1 4 IOO OOOI Wiring Face BLOWER RESISTORS B080014 B050010 00 Mating Face FLOW METER Wiring Face BLOWER SPEED CONTROL B080012 0000 D 2 3 2 0000000 Wiring 1 Wiring Face AUXILIARY FUSE CENTRAL LOCKING CONTROL UNIT CONNECTOR VIEWS 8500 3 1 4 1 13 0000000000000 0000000000000 Wiring Face 14 Wiring Face 26 Wiring Face CHIME MODULE C1 CRUISE CONTROL ENGINE SPEED SENSOR B030019 00 B040013 2 1 2 3 4 Wiring Face Wiring Face DUAL TEMPERATURE SWITCH CHIME MODULE C2 Mating Face DUAL TEMPERATURE SWITCH CYLINDER IDENTIFICATION SENSOR 8060024 6 5 4 B08
68. ND CONSOLE 5 1 5 BR DISTRIBUTION SWITCH 2 8 BK YL 2 5 BU GN RSS 25 VI GY 2 5 BK GY 2 5 BK YL e uw 0404 1 5 VI GY 1 5 BK GY 7 i15GN BU 3 0402 3 N _____ BU BK 1 5 BU 1 5 BK 3 2 RH FRONT wiNDOW MOTOR Q c 5133 2 POWER WINDOWS HOT IN RUN ONLY FROM UNLOADER RELAY K5 2 5 WT BK lt 0302 28 ACCESSORY CONNECTOR 25GN BU 224 SUNROOF 2 5 GN BU 774 POWER WINDOW CIRCUIT BREAKER 25 AMP 2 5 GN GY 1 6351 256 1 5 GN GY S GN GY 1 5 GN GY L 5322 N DRIVER S WINDOW RH FRONT WINDOW CONSOLE SWITCH CONSOLE SWITCH GROUND DISTRIBUTION 5 1 5 8R I 1 5 BR 2 5 25 VI 2 5 BK VEY 2 5 BK GY ah 13 77 7 4 ia Scans 1 5 BR 1588 1 5 VI 1 5 BK 305 1 5 VI GY 1 5 BK GY 2 5 BR DRIVER S WINDOW MOTOR 5413 0 SUNROOF HOT IN RUN ONLY FROM UNLOADER RELAY K5 POWER DISTRIBUTION BOX C302 ACCESSORY CONNECTOR 25 2 5 GN BU POWER WINDOWS SUNROOF SWITCH MOTOR RELAY ALTERNATING LATCH TYPE 6100 0 BODY ELECTRICAL HORNS DISTRIBUTION dh ie ais das aka dd die a Lid 1 VI YL 2 1 1BR 5114 1 1BR GROUND ane DISTRIBUTION HORN _ SWITCHES 4 BR GROUNDED TO STEERING COLUMN ua 4 ue io gt
69. NG CONTROL UNIT 15 BK 523 D 75 GN HELL EET NL I 302 ACCESSORY CONNECTOR 105 0 WITHINPAC eem s 8 9 LOCKING CONTROL UNIT 158K 19 758 LOCK 32 4113 STATE UNLOCK e E sou aues 75 BK 75 GN VI NOT SAFETY SAFETY CATCH CATED DISTRIBUTION USED BUTTON BUTTON 15 GN BK 15 GN VI 1 7 RH REAR LH REAR NOT 16 75 BR BU NOT DOOR LOCK DOOR LOCK USED 4 USED MOTOR MOTOR C405 7 TRUNK LID tockiwo Fo ROD _ GROUND w 34 m mama 5342 1 5 5126A 0 CENTRAL LOCKING TROUBLESHOOTING HINTS 1 Check Fuse by operating the Interior Light Timer for either Dome Light 2 If all locks stay in unlock inhibit check the wires to terminal 10 of the Central Locking Control Unit for a short to ground SYSTEM CHECK Operate controls in sequence listed in the System Check Table Refer to Repair Action for the Response received tests follow the System Check Table After any repair repeat System Check to verify proper system operation NOTE Before replacing any system compo nent check all connectors splices and wiring to that component OPERATION 1 Insert the key in the Driver s door and turn to LOCK SYSTEM CHECK
70. OLANT LATE TEMPERATURE 1 5 0 PRODUCTION 2 5 BR 1 5 BR OR e 5 BR OR GROUND 103 DISTRIBUTION 3435 0 BRAKE LINING WARNING 4 h IGNITION SWITCH POWER DISTRIBUTION FROM IGNITION SWITCH i ON BOARD PAGES 1240 0 1240 1 COMPUTER J5 GN WT 212 2 5 GN S212 FUSE tarag 2 200 DETAILS 25 GN 5 GNAWT 5 Bue INSTRUMENT POWER NOT USED NOT CLUSTER 5213 0 PRINTED 5 GN a USED 14 92 7 vo MA e 53 S 14 CL CIRCUIT i vm em m saq n Al 4 74 As U I S aum Y 5 BR BU aid J5BR BU 7 5BR BU 5239 amam C200 IGNITION SWITCH 5 BR BU CHARGE SYSTEM 5 5 BU GY 5 BU YL 5 BR BH REAR BRAKE GROUND 8 WEAR 5 50 DISTRIBUTION SEATBELT WARNING 772877 PARK BRAKE TIMER 5 24 SWITCH 75 BR w CLOSED WITH NOTE 77571 BRAKE SET VOLTAGE AT BRAKE WEAR SENSOR CONNECTOR IS WITHIN 1 VOLT OF 620 BATTERY VOLTAGE 6200 3450 0 ANTILOCK BRAKING SYSTEM ABS HOT IN ACCY RUN OR START IGNITION POWER SWITCH DISTRIBUTION BOX FUSE 5340 a DETAILS 1 VI GN I BRAKE 75 GN POWER swiTcu 2 DISTRIBUTION CLOSED WITH BRAKE T PED
71. SAFETY CATCH RH FRONT 405 BOTTOM OF GN J5 YU BUTTON GN BU BUTTON DOOR LOCK 1 5 RD BK THIS PAGE NOT USED MOTOR 1 RD BK UNLOCK BHFRONT 52 7 9 5309 INHIBIT SWITCH 1 5 RD BK 6 15 1 5 RD BK INTERIOR LIGHT TIMER seo 1 5 30 BS 17 05 35 sy 1 BR ILL 15 CONTROL UNIT 1 80 8 75 BU 3502 DISTRIBUTION DP 9 IP PAGE 2 15 WT REQUEST INPUT 2 BR 35 BU perf mI PASSENGER S FA J5WT PASSENGER S 2 75 BK en 1 5 BU wa rrs LOCK 5302 CONTROL 75 BU SOLID STATE 1 T iud i nn UNLOCK CONTROL 1 5 WT S303 15 WT S333 nb CONTINUED 15 WT GROUND B 1 FROM TOP 75 WT THIS PAGE CAUTION WN BR DISCONNECT BATTERY BEFORE MOVING OR REMOVING THE CENTRAL LOCKING GROUN CONTRDL UNIT RECONNECT BATTERY ONLY AFTER THE CENTRAL LOCKING ZE DISTRIBUTION CONTROL UNIT HAS BEEN PROPERLY INSTALLED IF POWER IS APPLIED TO THE CENTRAL LOCKING CONTROL UNIT WHEN IS NOT PROPERLY POSITIONED UNIT WILL BE DAMAGED CENTRALLOCKING 5126 3 4 DOOR CONTROL FROM TERMINAL 11 HOTATALLTIMES CENTRAL LOCKING 777 383555777 IGNITION TT CONTROL UNIT ON m SWITCH 00 NOT OPERATE THE SYSTEM MORE FACING PAGE THAN B TIMES IN QUICK SUCCESSION TO PREVENT DAMAGE TO THE CENTRAL LOCKI
72. TABLE RESPONSE REPAIR ACTION None proceed to Operation 2 Repair replace the suspect Door Lock Motor circuit No doors lock Proceed to Operation 4 doors double lock Safety Catch Buttons None proceed to Operation 3 cannot be pulled up by hand Driver s door double locks and only some of Repair replace the suspect Door Lock Motor other doors double lock Driver s door double locks but all the other Perform Test B doors do not double lock Driver s door does not double lock Mechanical problem see BMW Troubleshooting Manual All doors lock Some doors lock 2 Turn the key to UNLOCK INHIBIT clockwise until key is horizontal CENTRAL LOCKING 5126 1 SYSTEM CHECK TABLE CONT D All doors unlock None proceed to Operation 4 Some doors unlock Repair replace the suspect Door Lock Motor circuit Proceed to Operation 5 If the doors did not lock in Operation 1 repair replace the Driver s Door Lock Switch otherwise proceed to Operation 5 Some doors lock Repair replace the suspect Door Lock Motor circuit No doors lock If all the doors locked in Operation 1 repair replace the Right Front Door Microswitch If the doors did not lock in Operation 1 perform Test A If all the doors did not unlock in Operation 3 repair replace the Driver s Door Lock Switch otherwise proceed to Operation 6 Some doors unlock Repair replace the suspect Door Lock Motor
73. aided ground strap from the Antenna Base to Chassis ground Check for an open in the Antenna Cable Check for a short to ground at the Antenna or Antenna cable open circuit RADIO ANTENNA 6500A 3 NOISE SYMPTOM TABLE SYMPTOM POSSIBLE CAUSE REPAIR ACTION Harsh popping or crackling noise present when Ignition Noise Check for proper distributor cap shielding ignition on changes with engine rpm Check shielding ground strap If not present install Check for defective spark plug or spark plug wire Reroute spark plug wires laying against any thing that could be transmitting noise to the Radio wiring or sensor leads traveling into the passenger compartment Check engine firewall ground strap and engine hood body ground strap Check if engine hood is closing properly Connect dedicated ground strap to Radio Replace distributor cap and rotor High whine or howling that changes with engine Alternator noise Connect dedicated ground strap to Radio rpm Runadirect wire from Battery to Alternator AM only is weak and noisy AM alignment Remove Radio for service FM only is weak and noisy FM alignment Remove Radio for service 6571 0 CRUISE CONTROL RUN OR START r7 7777771 POWER FUSE 10 DISTRIBUTION TEAMP BOX HOT IN ACCY RUN OR START 77 POWER DISTRIBUTION 1 BOX CLUSTER
74. attery If the voltages are correct proceed to Table 2 1 Check the wire to terminal 3 for an open 2 Check the wire from terminal 4 for an open to ground see schematic 7 amp Ground Doors See 1 lock f the result is correct repair replace the switches and related wiring see sche matic 1 Proceed to Table 3 A CONTROL UNIT LOCK TEST TABLE 3 Connect FUSED JUMPERS At CONTROL UNIT CONNECTOR Disconnected Jumper Correct For Between Result Diagnosis 1 amp 3 Doors See 1 9 amp 4 lock Ifthe result is correct replace the Central Locking Control Unit 1 Check the wire from terminal 1 to splice and the wire from terminal 3 to splice for opens see schematic B UNLOCK INHIBIT TEST Connect A FUSED JUMPER At CONTROL UNIT CONNECTOR Connected Jumper Correct For Between Result Diagnosis Fp 10 amp Ground If the result is correct check the wires from terminal 10 to ground for opens see schematic Replace the Unlock Inhibit Switch if the wires and connections are OK Check the wires from terminal 11 for opens see schematic Replace the Central Lock ing Control Unit if the wires and connec tions are OK C CONTROL UNIT UNLOCK TEST Connect A FUSED JUMPER At CONTROL UNIT CONNECTOR Connected Jumper Correct For Between Result Diagnosis E l I A ET Doors 6 amp Ground S
75. ce C240 B060003 03 Mating Face C242 Wiring Face C404 C405 8500 10 CONNECTOR VIEWS Wiring Face C503 9000 0 COMPONENT LOCATION CHART ___ ____ __ _____ __ i COMPONENTS A C In Line Fuse ABS Electronic Control Unit ABS Hydraulic Unit Active Check Control Unit Air Flow Meter Amplifier Auto Charging Flashlight Automatic Transmission Range s w q IU Auxiliary Auxiliary Fan Normal Speed Blower Resistor Auxiliary Fuse B C Horn Diode Backup Light Switch Battery Battery Junction Block Blower Motor Blower Resistors Board Computer Horn Brake Fluid Level Switch Brake Switch Brake Wear Sensors Central Locking Control Unit Chime Clutch Switch Combination Switch Compressor Clutch Diode Compressor Enable Switch Coolant Level Switch Coolant Temperature Sender Coolant Temperature Sensor Cruise Control Actuator Cruise Control Unit Cylinder Identification Sensor Diagnostic Connector Door Lock Motors Driver Exterior Door Handle 4 Dual Temperature Switch Engine Speed Sensor Evaporative Purge Valve LH side of evaporator housing Under LH side of dash above hood release In front of LH front wheel well Above rear view mirror Behind air cleaner In trunk above LH wheel weil glove 422 44 40404444404
76. e BODY ELECTRICAL 6100 1 CIGAR 30AMP _ 80x 2 5 RD YL 204 2 5 RD YL 2 5 BR 1 DISTRIBUTION fuse 2g 1 DISTRIBUTION HOT AT ALL TIMES POWER DISTRIBUTION Y 2 1 ix 5319 gt 25 RD GN 21 75 RD GN 5 RD GN e 219 5 RD GN GLOVE BOX 2 5 BR BU GROUND DISTRIBUTION FLASHLIGHT IGHTER GLOVE BOX LIGHT AUTO CHARGING FLASHLIGHT MAP READING LIGHT HOT IN ACCY RUN OR START TTTTTTT Suspe DISTRIBUTION 7 6 AMP FUSE 5340 itus 5 VI GN gt READING LIGHT GROUND DISTRIBUTION 5 BR 6100 2 BODY ELECTRICAL R HOT IN RUN mm sm BUS POWER DISTRIBUTION BOX 16Y G 8 2 5 GN BU 14 1 75 GY RD LIGHT SWITCH 2 5 GN BU 5221 gt DETAILS 75 GY RD 1 BEAR DEFOGGER SWITCH r LIGHT SWITCH DETAILS S307 PB gU w w DASH LIGHTS DISTRIBUTION ERU SS SS LS 6131 0 IGNITION KEY WARNING SEATBELT WARNING a 7777 power i te DISTRIBUTION 1 15AMp 1 BOX FUSE 319 marara DETAILS 75 RD GN IGNITION MODULE KEV
77. e BEAM CIRCUIT A 15 1 BR 1BR ger vas uus diis quA in vs ans dup dps t A quy vin mor uns 950 HEADLIGHTS FOG LIGHTS 6312 1 ACTIVE CHECK CONTROL UNIT 77 POWER DISTRIBUTION BOX 188 75 BR 1 ec 1WT BU RH HIGH 6 RH LOW 6 m A A GROUND pisrmaurio 2 5 BR 6313 0 TURN HAZARD LIGHTS HOT IN ACCY RUN OR START HOT AT ALL TIMES POWER A 1 5 VI GY 1 5 RD WT 1 5 ACTIVE CHECK CONTROL UNIT ISTRIBUTION 1 5 GN VI 7 1 5 GN VI COMBINATION 103 1 5 GN VI 1 5 GN YL 1 5 GY RD 180 OHMS HAZARD SWITCH LIGHT RED NOTE SWITCH LIGHT WHEN THE SWITCH 15 OFF 5 BR WT LIGHTS DASH RESISTOR OIMS THE HAZARD LIGHT SWITCH ISIN BEAD OR PARK AND THE HAZARD BU RD INDICATORS TURN 1 5 GN YL FLASHER 1 5 GN YL TURN HAZARD LIGHTS 6313 1 1 5 GN YL mem COMBINATION 1 BU RD 0202 1 5 BU RD 1 5 BU BK 5 BU BK amp e ds 1 5 80 8 1 5 BU RD 1 BU BK 1 BU BK 5 BU RD 1 BU RD LH REAR 1
78. eck the YL wire for an open between splice 5231 and the Blower Resistors Continued from previous column Check the BK wire for an open 6 Check the GN wire for an open 7 Check the BU wire fr an open 8 If voltage is not present at the YL wire but is present at the GN wire or BK wire replace the Blower Resistors 9 If voltage is not present at the YL BK or GN wires check for an open Blower Resistors Safety Switch 10 If voltage is not present at the YL BK GN and BU wires do Test C C BLOWER MOTOR TEST Measure VOLTAGE At BLOWER MOTOR CONNECTOR Disconnected Conditions Ignition Switch RUN A C Select Switch ON Blower Speed Control HIGH Measure Correct ForDi Between Voltage or Diagnosis BU amp Ground BU amp BR If both voltages are correct replace the Blower Motor Check the BU wire for an open If wire is good recheck Test B Check the BR wire to ground G200 for an open Continued in next column 6421 0 A C AIR DELIVERY CONTROL HEATING AND AIR CONDITIONING FRESH RECIRCULATING AIR CONTROLS HOT IN RUN ONLY FROM UNLOADER RELAY K7 r POWER FUSE 20 DISTRIBUTION BOX 5 GN BR 1 5 GN BR 7 Pm n m mn fre em sr sm son m sm re pm s CONTROL
79. ee 1 f the result is correct repair replace the switches and related wiring see sche matic 1 Replace the Central Locking Control Unit CIRCUIT DESCRIPTION The Central Locking System is controlled by the Central Locking Control Unit This unit senses when a lock switch is moved by a key and sends the appropriate signal to drive the Motors The Central Locking Con trol Unit controls the Door Locks Gas Filler Lock and Trunk Lock The unit also has an Inertia Switch which closes on impact greater than 5g If in RUN or START the locks are then unlocked Lock When the Key is inserted into a lock and turned clockwise the Lock switch moves to LOCK and grounds terminal 7 of the Central Locking Control Unit The unit then acti vates the Lock Relay and applies voltage from Fuse 27 to the Lock Motor which is grounded through the Central Locking Con trol Unit terminal 2 The Lock Motor then pulls the lock down The door locks also con trol the Trunk Lock and Gas Filler Lock CENTRAL LOCKING 5126A 3 Unlock When the key is turned counterclockwise terminal 6 of the Central Locking Control Unit is grounded through the Lock Switch The Central Locking Control Unit then acti vates the Unlock Relay and applies voltage from Fuse 27 through terminal 2 to the Lock Motor The motor is grounded through the Cental Locking Control Unit terminal 1 The polarity is reversed and the motor pushes the lock up Unlock Inhib
80. ee 2 Fresh Recirculating Air Switch DEPRESSED RECIRCULATING YL and Continued in next column Battery Battery Battery Continued from previous column YL WT If all voltages are correct replace the inoperative motor 1 Check the WT wire for an open If wire is good do Test B for RH Air Relay 2 Check the wire for an open wire is good do Test B for LH Air Relay Do Test B for both Air Relays B FRESH RECIRCULATING AIR RELAY VOLTAGE TEST Measure VOLTAGE At FRESH RECIRCULATING AIR RELAY CONNECTOR Disconnected Conditions Ignition Switch RUN Fresh Recirculating Air Switch DEPRESSED RECIRCULATING Fresh Recirculating Air Flap Door Motor Connectors CONNECTED For Diagnosis Between Voltage pem 2 2 p Continued on next page V 6421 2 A C AIR DELIVERY CONTROL Continued from previous page If all voltages are correct replace the sus pect Fresh Recirculating Air Relay 1 Check the GN BR wire for an open 2 Check the GN wire back to the Control Switches for an open If wire is good do Test C Check the BR wire for an open C CONTROL SWITCHES VOLTAGE TEST Measure VOLTAGE At CONTROL SWITCHES CONNECTOR Disconnected Condition Ignition Switch RUN Measure Correct For Diagnosis Between Voltage g 7 GN BR amp 7 GNIBR amp If bot
81. es INSTRUMENT ELECTRONICS CLUSTER 11 27 INDICATORS a amma sme PRINTED ON BOARD UGANI CODECI 77 MOTRONIC CIRCUIT COMPUTER 0 MODULE SOLID STATE 0LID STATE sinl 4 5200 e 110 7000 0 COMPONENT LOCATION VIEWS TO _____ FUEL COOLANT TEMPERATURE INJECTOR 41 4 SENDER AUXILIAR Y FUSE OXYGEN SENSOR HEATER RELAY 67914A i COOLANT TEMPERATURE SENSOR x Figure 5 Forward of LH Front Shock Tower Relay Cover Removed BRAKE FLUID LEVEL SWITCH HYDRAULIC 69402 B 629146 Figure 2 LH Rear of Engine Compartment Figure 4 LH Front of Engine Compartment Figure 6 Forward of LH Front Shock Tower COMPONENT LOCATION VIEWS 7000 1 COOLANT CRUISE LEVEL CONTROL SWITCH ACTUATOR 611102 Figure 1 Forward of LH Front Wheel Well DUAL TEMPERATUR SWITCH 61110 E Figure 2 Top RH Side of Radiator 611006 DIAGNOSTIC CONNECTOR IDLE SPEED ACTUATOR 69405 Figure 4 LH Front of Engine IGNITION COIL 611001 E Figure 5 RH Rear of Engine Compartment OXYGEN SENSOR Figure 6 Lower RH Rear of Engine Compartment 7000 2 COMPONENT LOCATION VIEWS 127 HIGH PRESSURE CUT OUT SW
82. eter applies to the circuit could damage these components TROUBLESHOOTING TESTS Voltage Test This test measures voltage acircuit By taking measurements at several points terminals or connectors along the circuit you can isolate the problem To take a voltage measurement connect the negative lead of the voltmeter to the battery s negative terminal or other known good ground Then connect the positive lead of the voltmeter to the point you want to test The voltmeter will measure the voltage present at that point in the circuit HOT AT ALL TIMES POWER DISTRIBUTION BOX LOW FLUID NO VOLTAGE SWITCH usd e 7 VOLTMETER ETE Voltage Test SYSTEMATIC TROUBLESHOOTING 7 Voltage Drop Test Wires connectors and switches are designed to conduct current with a minimum loss of voltage A voltage drop of more than one volt indicates a problem To test for voltage drop connect the voltmeter leadsto connectors ateither end of the circuits suspected problem area The positive lead should be connected to the connector closestto the power source The voltmeter will show the voltage drop between these two points HOT AT ALL TIMES POWER DISTRIBUTION LOW FLUID SWITCH 7 VOLTMETER LOW FLUID INDICATOR 1 5 BR Voltage Drop Test Continuity Test To perform a continuity test first disconnect the car battery Then adjustthe ohmmeter to
83. f the resistors are bypassed allowing more voltage to be applied to the Blower Motor which then runs at a higher speed When the Blower Speed Control is moved to position 4 battery voltage is applied directly to the Blower Motor which then runs at maximum speed The Blower Resistors dissipate heat because of the current flowing through them They are cooled by the air flow from the blower If there is insufficient air flow to cool the resistors the safety switch will open shutting the Blower Motor off until the resistors have cooled TROUBLESHOOTING HINTS Try the following checks before doing the Sys tem Diagnosis Check Fuse 20 by visual inspection 2 H Blower will run in high only check the Blower Resistors Safety Switch for an open Goto Heating and Air Conditioning 6410 0 System Check for a guide to normal operation Go to System Diagnosis for diagnostic tests SYSTEM DIAGNOSIS Do the tests listed for your symptom in the Symptom Table below Tests follow the Symptom Table SYMPTOM TABLE SYMPTOM DO TEST Blower Motor does not run in any speed setting in any other speed setting Blower does not run A in some modes Blower does not run A Blower runs only in HIGH does not run with A C ON or in Recirculating mode AIC Select Switch or Fresh Recirculating Air Switch does not light A C BLOWER CONTROLS 6413 1 A CONTROL SWITCH VO
84. h voltages are correct replace the Control Switches 1 Check the GN BR wire for an open If wire is good check that connector C204 is properly mated 2 Check the GN wire for an open between the Control Switches and the LH and RH Fresh Recirculating Air Relays 6452 0 A C COMPRESSOR CONTROLS HEATING AND AIR CONDITIONING COMPRESSOR CONTROLS HOT IN RUN ONLY FROM UNLOADER RELAY K7 A C r 7377777 CONTROL I FUSE 20 i PANEL 30 4 02034 25 mA i 5230 DETAILS PSWITCHES pcc i 1 CSAIRSWITER i am c ts ts ts to CU ed 2 Y 1 BK VI 1 BK VI 4 1 BK VI AUXILARY ISEEHEATING AND AIR CONDITIONING ONTROLS 5226 FAN BLOWER CONTROLS lo eee ae J EVAPORATOR INPUT TEMPERATURE EG 08 ende EVAPORATOR BEGULATOR b AROUND D LLL A 4 1 2 TEMPERATURE SENSOR 5 VUGY B GROUND 41 DISTRIBUTION eR ena 1 zl MOTRONIC v CONTROL l UNIT soup UMT STATE 22 2 5 I 1 RTT NH EL AT timor NEES A C COMPRESSOR CONTROLS 6452 1 HEATING AND AIR CONDITIONING COMPRESSOR CONTROLS T TT V EVAPORATOR
85. hts Rear Marker License Active Check Control also fuses 4 6 10 21 amp 22 On Board Computer also fuses 10 12 21 27 Rear Defogger also fuse 8 Lights Turn Hazard Warning also fuse 4 Not Used Interior Lights also fuses 19 21 Central Locking Radio Antenna also fuses 12 21 28 On Board Computer also fuses 10 12 21 23 Cigar Lighter Radio Antenna also fuses 12 21 27 Fog Lights also fuse 30 ew Fog Light Indicator Fog Lights also fuse 29 SEINE CIRCUIT BREAKER Auto Charging Flashlight Auxiliary Fan also fuses 3 18 19 24 2 2 27 5 6 8 9 2 2 0670 2 POWER DISTRIBUTION BATTERY 2 5 RD DIAGN0STIC 14 JUNCTION CONNECTOR POWER DISTRIBUTION B0X LINK ERU por 6 BK 7779 1580 4 711 CONTINUED INJECTION ELECTRONICS E __ LNEXT PAGE 10 RD BATTERY STARTER ALTERNATOR Ag NUNT 5 OVER SRS AUXILIARY TA VOLTAGE FUSE HYDRAULIC PROTECTION NOT USED C200 2 5 GN SRS CONNECTOR 4 2 SAFETY NOT USED ama SWITCH 6240 IF EQUIPPED WITH AIR BAGS INJECTION 2 5 6N GY ELECTRONICS ON BOARD ANTILOCK CENTRAL INDICATORS CHECK COMPUTER BRAKING LOCKING CHARGING 5 CONTROL SYSTEM SYSTEM
86. ire for an open 2 Check Amplifier ground to Amplifier for an open to ground Make sure ground G200 is clean and tight 3 Check Amplifier Radio On wire for an open 4 Check wire from terminal 10 for an open to ground Make sure ground G302 is clean and tight C FADER SIGNAL TEST TABLE 1 Measure VOLTAGE At FADER CONTROL CONNECTOR Disconnected Conditions Ignition Switch RUN Radio ON Measure Correct For Di Between Voltage or Diagnosis Approxi Approxi If both voltages are correct check for AC voltage at Radio outputs with Radio tuned to a strong signal If AC voltage is present go to Table 2 Remove Radio for service if AC voltage is not present Check wire from Left Channel on Radio for an open If wire is good remove Radio for service Check wire from Right Channel on Radio for an open If wire is good remove Radio for service Continued on next page 6500A 2 RADIO ANTENNA Continued from previous page C FADER SIGNAL TEST TABLE 2 Measure VOLTAGE At AMPLIFIER CONNECTOR Disconnected Conditions Ignition Switch RUN Radio ON Measure For Diagnosis Between Voltage 20 amp Ground a vt If all voltages are correct but sound was not present remove Amplifier for service 1 Check between pin 7 Fader to pin 14 Amplifier for an open in the wiring If wire is OK replace Fader Control 2 Check between pin 3 Fader to pin 15 Amplifier for
87. it When the key is inserted into the Driver s Lock and turned clockwise past the LOCK position the Unlock Inhibit mechanism is engaged This mechanically inserts a bar into the driver s lock and prevents unlocking through use of the Safety Catch Button When in the Unlock Inhibit position ground is applied to the Unlock Inhibit motors in the other lock units The Central Locking Con trol Unit is grounded at terminal 10 and then activates the Lock Relay Voltage is applied to the Unlock Inhibit motors through termi nal 1 They are now activated and engage the other Unlock Inhibit mechanisms The direc tion of the motors is reversed when the doors are unlocked see Unlock Trunk Lock The Trunk Lock operates in a manner similar to the Door Locks 5133 0 POWER WINDOWS 4DOOR HOT AT ALL TIMES FROM UNLOADER RELAY K5 2 5 WT BK 6302 ACCESSORY 25GN gu 25 connector SUNROOF amem 5224 25 GN BU POWER WINDOW CIRCUIT BREAKER 25 2 5 GN GY 1 5 GN GY 1 5 GN GY 2 5 GN GY memes e 322 1 5 GN GY LH FRONT WINDOW CONSOLE SWITCH GROUND As DISTRIBUTION 1 2 5 BK YL 2 5 BU GN a 2 2 5 2 5 BK 2 5 BK YL 2 5 BU GN 1 5 7 15 GN BU t56N BU 7 G g 6401 5402 C402 POWER WINDOWS 5133 1 40008 1 5 GN GY 1 5 GN GY RH REAR WINDOW RH FRONT CONSOLE SWITCH WINDOW GROU
88. ition Switch Upper part of steering column 7000 6 1 Interior Light Timer Control Below LH front 7000 5 1 Left Tank Fuel Sender Under LH side of rear 7000 10 1 Low Pressure Cut Out Switch Behind RH headlights 7000 2 5 Main Fuel Pump In f el tank z ice er re NS 7000 8 2 MainRelay On bracket in front of LH front shock tower 7000 0 5 MotorRelay In windshield header above rear view mirror 7000 6 6 Motronic Control Unit Under RH side of dash above glove box 7000 7 3 Multi Function Clock Center of dash OilLevel Sensor Top side 7000 1 3 Oil Pressure Switch Below 7000 2 4 On Board Computer Module center of dash on RH side of radio 7000 6 5 On Board Computer Relay Box Under LH side of dash above hood release 7000 5 5 Oscillating Plate Compressor Cl tchi Lower front engine on compressor 7000 2 3 Outside Temperature Sensor Behind splash guard near LH fog light 7000 3 3 Over Voltage Protection Relay Under LH side of dash near ABS Electronic Control ONG urs k aO m RR bus 7000 5 2 Oxygen Sensor Lower RH rear of engine co
89. ized Battery voltage is then applied through the closed contacts of the LH Fresh Recirculating Air Relay to the Flap Door Motors and to ground through the closed con tacts of the RH Fresh Recirculating Air Relay Since the voltage is now applied to the Flap Door Motors in the opposite direction the motors reverse direction and move the Fresh Recirculating Air Flap Doors to position B allowing only recirculating air to enter the blower Both of the Air Flap Door Motors remain energized continuously When the doors reach the end of their travel the motors stall and hold the doors in position TROUBLESHOOTING HINTS Try the following checks before doing the Sys tem Diagnosis 1 Check that LH and RH Fresh Recirculating Air Relays are firmly seated 2 Check that LH and RH Fresh Recirculating Air Relay pigtail connectors are properly mated Heating and Air Conditioning 6410A 0 System Check for a guide to normal operation Goto System Diagnosis for diagnostic tests SYSTEM DIAGNOSIS Do the tests below if the Fresh Recirculating Air Flap Doors do not operate A FRESH RECIRCULATING AIR FLAP DOOR MOTOR VOLTAGE TEST Measure VOLTAGE At FRESH RECIRCULATING AIR FLAP DOOR MOTOR PIGTAIL CONNECTORS Disconnected Conditions Ignition Switch RUN Fresh Recirculating Air Switch RELEASED FRESH Correct For Diagnosis Voltage 9 See 1 Measure Between W T and Ground WT and YL S
90. mpartment 7000 1 6 Oxygen Sensor Heater Relay bracket in front of LH front shock tower 7000 0 5 7 2 Park Brake Switch f At base of parking 7000 LOCATION CHART COMPONENTS Power In trunk behind LH wheel well Power Distribution Box At top rear of LH front wheel well Power Window Circuit Breaker On center console below Power Window Motors Forward part of each Pulse Wheels On wheel in brake housing Rear Lights Check Relay In trunk above LH wheel well Rear Window Safety Switch center console left of shift lever RH Front Door Micro Switch rear of RH front door Rotary Compressor Clutch Lower RH front of engine on compressor Safety On top of LH wheel well near cruise control actuator Seatbelt Switch In driver s seatbelt buckle Seatbelt Warning Timer Under LH side of dash on electrical bracket Speed Detectors On wheel in brake housing Speedometer In rear of differential Start Upper LH corner of driver s footwell Lower LH rear of engine Sunroof Motor
91. of the page is the fuse positive that powers the circuit The flow of current is shown through all wires connectors switches and motors to ground negative at the bottom of the page Within the schematic all switches and sensors are shown at rest as though the Ignition Switch were off For identification component names are underlined and placed next to or above each component Notes are included describing how switches and other components work The power distribution schematic shows the current feed through all the connections from the Battery and Alternator to each fuse and the Ignition and Light Switches If the Power Distribution schematic is combined with any other circuit schematic a complete picture is made of how that circuit works The Ground Distribution schematics show how several circuits are connected to common grounds wiring between components is shown exactly as it exists in the vehicle however the wiring is not drawn to scale To aid in understanding electrical operation wiring inside complicated components has been simplified The Solid State label designates electronic components ION CH BLACK BROWN RED YELLOW GREEN BLUE VIOLET GRAY WHITE PINK U _ _ _ 4 SYMBOLS ENTIRE COMPON
92. porator 7000 6 3 Evaporator Temperature Sensor LH side of evaporator housing 7000 6 3 Flasher A gy oe Upper part of steering column 7000 6 1 Fresh Recirculating Air Flap Door Behind A C face 7000 6 2 Fresh Recirculating Air Relays Behind A C face plate Fuel Injectors Below intake manifold at each 7000 0 3 Fuel Pump Relay On bracket in front of LH front shock tower 7000 0 5 Fuel Tank Sender Top of fueltank 7000 8 2 Fusible Link A RH rear of trunk Gas Filler Lock Motor In trunk behind RH wheel 7000 8 6 Hazard Switch In center of dash aboveradio 7000 6 5 High Pressure Cut Out Switch receiver dryer behind RH headlight 7000 2 5 Horn Brush Slip Ring In upper part of steering column 7000 6 1 5 s Ee Near fog lights behind splash guard 7000 3 3 Hot Water Cut Off Switch Under LH side of dash near evaporator 7000 6 2 Idle Speed Actuator LH top 7000 1 4 Ignition On RH front wheel 7000 1 5 Ignition Key Switch Part of ignition switch in upper part of steering column Ign
93. ptom Table below Tests follow the Symptom Table SYMPTOM TABLE SYMPTOM FOR DIAGNOSIS Radio does not work Do Test A no display no sound Do Test B Digital display Continued on next page lights but there is no sound LH Speakers or RH Speakers do not operate M RADIO ANTENNA 6500 1 Continued from previous page Antenna does not extend or retract Check ground wire for an open Make sure ground G302 is clean and tight Check wire to Power Antenna for opens If OK replace Power Antenna An individual Do Test D Speaker does not operate Excessive noise Do Test E comes from all Speakers A RADIO POWER TEST Measure VOLTAGE At RADIO CONNECTOR C216 Disconnected or CONNECTOR C215 Disconnected Condition Ignition Switch RUN Measure Between Voltage If all voltages are correct check wire from connector C215 to Radio for an open If wire is OK remove Radio for service 1 Check power input wire for an open 2 Check ground wire for an open to ground Make sure ground G200 is clean and tight 3 Check memory power supply wire for an open B AMPLIFIER POWER TEST Measure VOLTAGE At AMPLIFIER CONNECTOR Disconnected Conditions Ignition Switch RUN Radio Measure For Diagnosis Between Voltage 11 amp Ground 13 amp Ground Ifall voltages are correct go to Test C 1 Check power supply w
94. r is firmly seated Go to Heating and Air Conditioning 6410 0 System Check for a guide to normal operation Go to System Diagnosis for diagnostic tests SYSTEM DIAGNOSIS Do the tests listed for your symptom in the Symptom Table below Tests follow the Symptom Table SYMPTOM TABLE Engine idle speed is not high enough when Compressor Clutch engages 325 engine only Compressor clutch cycles on and off A AIC ISOLATION TEST TABLE 1 Measure VOLTAGE At HIGH PRESSURE CUT OUT SWITCH HARNESS CONNECTOR Disconnected Conditions Ignition Switch RUN Engine need not be running A C Selector Switch Depressed ON Correct Voltage For Diagnosis Measure Between BLK WHT amp If voltage is correct go to Test 1 Goto Test C B COMPRESSOR CLUTCH VOLTAGE TEST Measure VOLTAGE At COMPRESSOR CLUTCH HARNESS CONNECTOR Disconnected Conditions gnition Switch RUN Engine need not be running Control Panel A C Temperature outside car Above 60 F 16 C Measure Correct For Diagnosis Between Voltage BK or GY WT wire amp Ground See Schematic If the voltage is correct but Compressor Clutch does not engage replace the Com pressor Clutch Check for an open Low Pressure Cut Out Switch High Pressure Cut Out Switch A C Temperature Switch or associated wiring see schematic If High Pressure Cut Out Switch is open replace it
95. r seat 7000 8 2 C401 7 In LH pillar 402 7 In RH pillar 403 4 Behind LH side of dash C404 21 Above RH front door jamb switch 7000 4 2 C405 21 Above LH front door jamb 7000 4 1 C406 e Below RH front speaker 7000 4 5 iia REX Below LH front 7000 4 3 C500 Behind LH side of dash C503 3pins In rear of LH front door 510 1 Behind and above LH front speaker 7000 5 1 GROUNDS b s Q RH rear of trunk behind battery 7000 8 6 G 103 Su EE RHshocktower 7000 9 2 5104 On inner fender behind LH headlights 7000 1 1 ueste SES In trunk near LH wheel 7000 8 4 200 w SE Under LH side of dash above brake pedal 7000 5 5 Q201 2 Upper LH side of steering column 7000 6 1 3 300 sro eee eR Behind LH side of rearseat 7000 8 1 302 seit In trunk behind LH wheel 7000 8 3 6600 dam ens In windshield header O a TH 1
96. rcuits must be The brake lights are monitored only while the brake pedal is depressed An exception to this is when all brake light circuits are open A fault will be indicated with the Ignition Switch in Run 3 When a fault occurs the alarm indicator flashes the appropriate LED fault indi cator lights and the panel light goes on E aput d for five seconds Depressing the test 22 21 button will clear the alarm indicator POWER but the LED fault indicator remains on 5 YL BK SYL DISTRIBUTION ma 4 To test the unit depress the test button The LED fault indicators and the panel lights should go on CHECK Qum lt ERR i AUXILIARY r FAN Figure Active Check Unit Above Rear View Mirror 7 EN mut 3 3Y 114 1 YL WT V 6200 was wan umo cum vib wan wao GROUND DISTRIBUTION HEADLIGHTS ACTIVE CHECK CONTROL 6216 1 HOT AT ALL TIMES HOT IN ACCY RUN OR START r gt man pe m mima mamam a sm mam
97. re Cut Out Switch opens if refrigerant pressure rises to a value which is too high for normal operation The Evaporator Temperature Regulator also monitors the cur rent through the High Pressure Cut Out Switch If terminal 2 of the Evaporator Tem perature Regulator does not receive voltage when the clutch is engaged the Evaporator Temperature Regulator will remove ground from the relay The relay s contacts will open removing battery voltage to the Compressor Clutch The Compressor Clutch will disengage The Evaporator Temperature Regulator will again provide ground for the relay after a short time delay and the Compressor Clutch will turn on again This on off cycling of the Compressor Clutch will continue if termianl 2 does not receive an input The Temperature Switch M3 Engine opens to remove the compressor load from the engine if the engine coolant temperature rises above 226 F 108 C The Evaporator Temperature Sensor signals the Evaporator Temperature Regulator to de energize the Compressor Clutch when evaporator temperature is low enough for freezing to result Clutch Diode Whenever the Compressor Clutch is de ener gized the collapsing magnetic field induces a voltage in the winding The Clutch Diode pro vides a path for the resulting current TROUBLESHOOTING HINTS Try the following checks before doing the Sys tem Diagnosis 1 Check Fuse 20 by visual inspection 2 Check that Compressor Clutch connecto
98. read zero while holding the leads together Connect the ohmmeter leads to connector or terminals at either end of the circuits suspected problem area The ohmmeter will show the resistance across that part of the circuit BATTERY DISCONNECTED POWER DISTRIBUTION BOX O LOW FLUID INDICATOR Continuity Test Short Test Using Voltmeter Remove the blown fuse and disconnect the load Connect the voltmeter leads to the fuse terminals The positive lead should be connected to the terminal closest to the power source Starting near the POWER DISTRIBUTION BOX move the wire harness back and forth and watch the voltmeter reading If the voltmeter registers a reading there is a short to ground in the wiring Somewhere in the area of the harness being moved the wire insulation is worn away and the circuit is grounding HOT AT ALL TIMES POWER DISTRIBUTION FUSE REMOVED SHORT TO GROUND 1 5 RD LOW FLUID LOAD 7 LOW FLUIO INDICATOR 1 5 BR 4 Short Test Using Voltmeter 8 SYSTEMATIC TROUBLESHOOTING Short Test Using Ohmmeter Disconnect the battery Adjust the ohmmeter to read zero while holding the leads together Remove the blown fuse disconnect the load Connect one lead of the ohmmeter to the fuse terminal that is closest to the load Connect the other lead to a known good ground Starting near the POWER DISTRIBUTION
99. s OPEN IS LIFTED 1BR 75 BR VI 24 INTERIOR TI LIGHT TIMER 75 BR CONTROL PASSENGER S GROUND DOOR JAMB 5502 umm maman TRIBUTION SWITCH 75 BR CLOSED WITH 2 C405 0008 15 BR GROUND 5342 G wa 1 5 BR TTA DISTRIBUTION ue E 6410 0 AND AIR CONDITIONING SYSTEM CHECK This procedure provides an overall check of the Heating and Air Conditioning System Each of the steps can be performed without disassembly or the use of tools Complete this procedure with the tem perature outside the car above 60 degrees F 16 degrees C and the engine warm and running at idle SYSTEM CHECK TABLE SET Temperature Control fully counterclockwise Upper and Lower Slide Levers to extreme left Center Slide Lever to extreme right Blower Speed Control at 0 OFF ACTION NORMAL RESULT Press Fresh Recirculating Air Switch ON Fresh Recirculating pushbutton lights Blower Release A C button OFF runs slowly Rotate Blower Speed Control through steps 1 Blower speed increases at each step to max imum speed at Step 4 to4 Press Fresh Recirculating Air Switch to release Fresh Recirculating button is no longer lit Out it OFF side air is drawn into car The sound of Flap Door Motors may be heard repositioning flaps Rotate Temperature Contol at least 1 4 turn Air flow becomes warm clockwise Depress A C button ON button lights A C Compressor runs Auxil
100. sts SYSTEM DIAGNOSIS Do the following test if the Water Shut Off Solenoid does not operate normally WATER SHUT OFF SOLENOID TEST TABLE 1 Measure VOLTAGE At WATER SHUT OFF SOLENOID CONNECTOR Disconnected Conditions Ignition Switch RUN A C Control Panel TEMP Control FULLY COUNTERCLOCKWISE Measure Correct For Diagnosis Voltage Between BU amp Ground Battery BU amp or BR Rotate A C Control Panel TEMP Control to Mid Position BU amp Ground 0 Volts Continued in next column Continued from previous column l If all voltages are correct replace the Water Shut Off Solenoid Check the BU wire and In Line Fuse for an open If wire and Fuse are good go to Table 2 Check the BR wire for an open to ground Check that connector C204 is properly mated Check BU wire for a wire to wire short to voltage If wire is good replace the A C Control Panel TEMP Control WATER SHUT OFF SOLENOID TEST TABLE 2 Measure VOLTAGE At HOT WATER CUT OFF SWITCH CONNECTOR Disconnected Conditions gnition Switch RUN Water Shut Off Solenoid CONNECTED Measure Correct For Diagnosis Between Voltage 9 GN BR amp Ground GN BR amp BU Battery See 1 Battery If both voltages are correct replace the A C Control Panel TEMP Control Checkthe GN BR wire for an open back to Fuse 20 Check the BU wire
101. tor Circuit or Trunk Lock Motor If the doors do not lock repair replace the Trunk Switch Repair replace the Central Locking Control Unit if the Trunk Switch Circuit is OK None proceed to Operation 10 If the doors unlock repair replace the Trunk Lock Motor circuit or Trunk Lock Motor If the doors do not unlock repair replace the Trunk Switch Repair replace the Central Locking Control Unit if the Trunk Switch Circuit is OK Gas Filler locks None proceed to Operation 11 Gas Filler does not lock Repair replace the Gas Filler Lock Motor circuit Gas Filler unlocks Noes _ Repair replace the Gas Filler Lock Motor circuit Gas Filler does not unlock results are normal the system is OK A CONTROL UNIT LOCK TEST A CONTROL UNIT LOCK TEST TABLE 1 TABLE 2 OPERATION 8 Insert the key in the Trunk Cylinder Switch Turn the key to LOCK 9 Turn the key to UNLOCK Trunk does not unlock 10 Turn the key back to LOCK 11 Turn the key to UNLOCK SYSTEM DIAGNOSIS Measure VOLTAGE Connect A FUSED JUMPER Do the following tests when directed by the System Check Table At CONTROL UNIT CONNECTOR At CONTROL UNIT CONNECTOR Connected Connected Measure Correct For Jumper Correct For Between Voltage Diagnosis Between Result Diagnosis E EE ry Oe aT saa B

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