TROUBLESHOOTING - Shoarmateam.nl
Contents
1. CD auto changer wire har No Wire harness faulty to radio receiver assembly ness to radio receiver assembly Yes Temporarily install another CD auto changer Functions OK Radio receiver assembly faulty CD auto changer faulty V06282 2000 LEXUS LS400 RM717U Author Date 2081 BE 219 BODY ELECTRICAL _AUDIO SYSTEM CD Player SOUND QUALITY POOR VOLUME FAINT Functions OK if different CD inserted Yes _ cD faulty No Is radio operating normally Yes No Yes OK No Is B applied to CD auto changer No f 4B wire harness faulty Install properly Speaker faulty Yes Is ACC applied to CD auto changer No ACC wire harness faulty Yes Check if GND wire harness side to CD auto No GND wire harness faulty changer is OK Yes Is there continuity in CD auto changer wire har No Wire harness faulty ness to radio receiver assembly to radio receiver assembly Yes Temporarily install another CD auto changer No Radio receiver assembly faulty Functions OK Yes CD auto changer faulty V03678 2000 LEXUS LS400 RM717U Author Date 2082 BE 220 BODY ELECTRICAL AUDIO SYSTEM 20 CD Player EITHER SPEAKER DOES NOT WORK Ye Is radio operating normally Go to step 20 No l s A Yes Is power amplifier operating normally Go to step 20 A ves A 0 N Is hiss produced by non functioning speaker eS Go to step 22. shade film telephone antenna etc Does the noise occur even pulling out the antenna cord from the radio Check the radio Does the noise occur even pulling out the antenna terminal on the glass surface ates Mixing into the antenna cable Isn t there any adhesive Butyl rubber Yes _ Failure of glass installation stuck on the bases of the antenna Muse plane the butyl rubber terminal defogger terminal and bus bar Does the noise occur even pulling out the defogger terminal Influence of the film or the noise radiation of the additional installation part Interfering noise from the defogger line and choke coil eck the grounding of the antenna NG Grounding failure antenna cord coke coil and noise filter See page BE 203 Does the condition get better by exchanging the choke coil Exchange the choke coil Yes Does the condition get better by exchanging the antenna cord Exchange the antenna cord Radiate directly to the antenna from the generation source V08552 2000 LEXUS LS400 RM717U Author Date 2087
3. 0 No Speaker wire harness faulty No Is there continuity in speaker wire harness Speaker faulty Temporarily install another speaker Functions OK Go to step 20 A 20 A Is B applied to CD auto changer No B wire harness faulty Yes No Is ACC applied to CD auto changer No ACC wire harness faulty Yes Check if GND wire harness side to CD auto No GND wire harness faulty changer is OK Yes Is there continuity in CD auto changer wire har No Wire harness faulty to radio receiver assembly ness to radio receiver assembly Yes Temporarily install another CD auto changer No Radio receiver assembly faulty Functions OK CD auto changer faulty V06283 2000 LEXUS LS400 RM717U Author Date 2083 BE 221 BODY ELECTRICAL _AUDIO SYSTEM n CD Player CD WILL NOT EJECT Check if RADIO No 1 and RADIO No 2 fuses are OK Is auto search button of radio operating normally No Yes No Replace fuse Is B applied to CD auto changer AE B wire harness faulty Yes Is ACC applied to CD auto changer NOT ACC wire harness faulty Yes Check if GND wire harness side to CD ea changer is OK Yes Is there continuity in CD auto changer wire har No Wire harness faulty to radio receiver assembly ness to radio receiver assembly Yes Temporarily i
4. BE 207 BODY ELECTRICAL _AUDIO SYSTEM TROUBLESHOOTING NOTICE When replacing the internal mechanism computer part of the audio system be careful that no part of your body or clothing comes in contact with the terminals of the leads from the IC etc of the re placement part spare part HINT This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during sys tem operation and was prepared on the assumption of system component troubles except for the wires and connectors etc Always inspect the trouble taking the following items into consideration e Open or short circuit of the wire harness e Connector or terminal connection fault a 1 Radio No power coming in BEOCY 01 Power coming in but radio not operating Noise present but AM FM not operating Either speaker does not work Either AM or FM does not work o Reception poor Volume faint Few preset tuning bands Sound quality poor Cannot set station select button 7 Preset memory disappears Tape Player Cassette tape cannot be inserted Cassette tape inserts but no power 10 11 12 13 14 15 as td Power coming in but tape player not operating et Either speaker does not work i nn si Sound quality poor Volume faint i Tape jammed malfunction with tape speed or auto reverse a Cassette tape will not eject CD cannot be inserted Power coming in but CD player not operating 17 18 S
5. CD Player CD INSERTS BUT NO POWER Is radio operating normally No Check if RADIO No 1 and RADIO No 2 fuses are OK Yes No Replace fuse Is B applied to CD auto changer No B wire harness faulty Yes Is ACC applied to CD auto changer Non ACC wire harness faulty Yes Check if GND wire harness side to CD auto Meee S changer is OK Yes Is there continuity in CD auto changer wire har No Wire harness faulty to radio receiver assembly ness to radio receiver assembly Temporarily install another CD auto changer No Radio receiver assembly faulty Functions OK Yes Yes CD auto changer faulty V06280 2000 LEXUS LS400 RM717U Author Date 2079 BE 217 BODY ELECTRICAL _AUDIO SYSTEM 17 CD Player POWER COMING IN BUT PLAYER NOT OPERATING Is CD inserted correct side up Non Insert correctly Yes l Yes Is 3 2 in 8 cm disc being used Use 4 7 in 12 cm disc No Par Yes Functions OK if different CD inserted es CD faulty No No Is radio operating normally Go to step 17 B Yes Is temperature inside luggage compartment hot Protective circuit in operation Does sudden temperature changer occur inside Yes Formation of condensation due to temp luggage compartment change No Go to step 17 A 17 A No Is B applied to CD changer B wire harness faulty Is ACC a
6. HER SPEAKER DOES NOT WORK Is tape player operating normally Ye Radio receiver assembly faulty No ca Yes Is hiss produced by non functioning speaker Radio receiver assembly faulty rae ne Check if GND to power amplifier is OK No GND fault Yes Are B and B2 applied to power amplifier j 5o B and B2 wire harness faulty Yes Is AMP applied to power amplifier e Check the radio receiver assembly Yes Is there continuity in wire harness Radio receiver No Wire harness faulty to power amplifier Yes Is there continuity in speaker wire harness No Speaker wire harness faulty Yes Temporarily install another speaker Yes Speaker faulty Functions OK No Radio receiver assembly faulty V06273 2000 LEXUS LS400 RM717U Author Date 2072 BE 210 BODY ELECTRICAL AUDIO SYSTEM EITHER AM OR FM DOES NOT WORK RECEPTION POOR VOLUME FAINT FEW PRESET TUNING BANDS Problem with radio wave signals or location Yes Poor signals poor location See page BE 203 No Are both AM and FM defective No Radio receiver assembly faulty Yes Go to No 28 If radio side faulty Is tape player operating normally Yes _ Radio receiver assembly faulty No Temporarily install another speaker Functions Yes Speaker faulty OK No Radio receiver assembly faulty SOUND QUALITY POOR Is sound quality always bad No Go to step 6 A Ye
7. hed when accelerator strongly depressed disappears shortly after engine stops No Whining noise occurs when A C is operation No Alternator noise e A C noise cratching noise occurs during sudden accelera tion driving on rough roads or when ignition switch is turned on No icking sound heard when horn button Is pressed then released Whirring grating sound when pushed continuously No Murmuring sound stops when engine stops No Yes Fuel gauge noise Yes Horn noise Yes a Ignition noise Tick tock noise occurs in co ordination with blink ing of flasher Yes Turn signal noise No Noise occurs during window washer operation Yes_ Washer noise No and continues a while even after engine stops Scratching noise occurs while engine is running yeg Engine coolant temp gauge noise No Scraping noise in time wiper beat No Other type of noise 2000 LEXUS LS400 RM717U V06356 Author Date 2086 BE 224 BODY ELECTRICAL AUDIO SYSTEM mm woman No Does the noise occur only in the radio Refer to No 25 It occurs in the cassette Yes and CD An electric environment Does the noise stop by removing it Yes Yes Does the noise occur in a particular place No Is there any additional installation part around the glass imprinted antenna Sun
8. ject Head dirty V03671 Author Date 2077 BE 215 BODY ELECTRICAL _AUDIO SYSTEM 14 Tape Player CASSETTE TAPE WILL NOT EJECT No Is tape player operating normally a Cassette tape jammed Is auto search button of radio operating normally Yes Radio receiver assembly faulty Check if DOME fuse is OK Aee Replace fuse Yes Is B applied to radio receiver assembly Radio receiver assembly faulty Yes B wire harness faulty 5 CD Player CD CANNOT BE INSERTED Is CD already inserted es Eject CD No Yes 7 Is 3 2 in 8 cm disc being used Use 4 7 in 12 cm disc No Is auto search button of radio operating normally No Check if RADIO No 1 and No Replace RADIO No 2 fuses are OK fuse Yes Yes Is B applied to CD auto changer No B wire harness faulty Yes No Is ACC applied to CD auto changer ACC wire harness faulty GND wire harness faulty Yes Is there continuity in CD auto changer wire har No Wire harness faulty to radio receiver assembly ness to radio receiver assembly Radio receiver assembly faulty Yes Check if GND wire harness side to CD auto changer is OK Temporarily install another CD auto changer Functions OK CD auto changer faulty V06279 2000 LEXUS LS400 RM717U Author Date 2078 BE 216 BODY ELECTRICAL AUDIO SYSTEM 16
9. ly is OK Yes ACC and B wire harness faulty 2000 LEXUS LS400 RM717U l GND faulty 5 e Radio receiver assembly faulty V06275 Author Date 2074 BE 212 BODY ELECTRICAL AUDIO SYSTEM 3 Tape Player CASSETTE TAPE INSERTS BUT NO POWER Is tape operating normally Yes Radio receiver assembly faulty Check if DOME and RADIO No 2 fuses are OK Replace fuse Is ACC applied to radio receiver assembly No ACC wire harness faulty Tape Player POWER COMING IN BUT TAPE PLAYER NOT OPERATING faul Functions OK if different cassette tape inserted Yes N o Yes f l Is radio operating normally Radio receiver assembly faulty No Radio receiver assembly faulty Is there continuity in speaker wire harness Non f Speaker wire harness faulty Yes Temporarily install another speaker Yes Functions OK No Radio receiver assembly faulty V06276 2000 LEXUS LS400 RM717U Author Date 2075 BODY ELECTRICAL AUDIO SYSTEM 11 Tape Player Is radio operating normally EITHER SPEAKER DOES NOT WORK Check if RADIO No 1 and RADIO No 2 fuses are OK Yes Replace fuse Radio receiver assembly faulty BE 213 Check if GND to power amplifier is OK Yes Are B and B2 applied to power amplifier Yes Is AMP applied to power amplifier Yes Is there continuity in wire harness Radio receiver to power am
10. nstall another CD auto changer No Radio receiver assembly faulty Functions OK Yes CD auto changer faulty 22 Ampliior NO POWER COMING IN E ne Power amplifier faulty AMP fuse is OK No Replace fuse Are B and B2 applied to power amplifier Yes Yes Is there continuity in wire harness Radio receiver Se to power amplifier Yes Check if GND to body is OK enD auwy OOOO Yes Radio receiver assembly faulty V06285 2000 LEXUS LS400 RM717U Author Date 2084 BE 222 BODY ELECTRICAL AUDIO SYSTEM 23 Ampliier EITHER SPEAKER DOES NOT WORK Yes Is power amplifier operating normally Radio receiver assembly faulty Is hiss produced by non functioning speaker No ee eee i Is there continuity in speaker wire harness Radio receiver assembly faulty Speaker wire harness faulty Yes Temporarily install another speaker Functions OK Speaker faulty No Power amplifier faulty NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING Is speaker properly installed No install properly Yes No Yes Is noise produced No Noise produced by static electricity accumulating in the vehicle body V06286 2000 LEXUS LS400 RM717U Author Date 2085 BE 223 BODY ELECTRICAL AUDIO SYSTEM as noise NOISE PRODUCED WHEN ENGINE STARTS Whistling noise which becomes high pitc
11. ound quality poor Volume faint 19 20 21 Either speaker does not work CD will not eject Amplifier No power coming in Either speaker does not work Noise produced by vibration or shock while driving Re Noise produced when engine starts Noise occurs P Su jumps 22 23 2 25 26 OD inserts but no power 2000 LEXUS LS400 RM717U Author Date 2070 BE 208 BODY ELECTRICAL AUDIO SYSTEM j 1 Radio NO POWER COMING IN Is tape player operating normally No Check if RADIO No 2 fuse is OK Yes Is ACC applied to radio receiver assembly ACC wire hamessfaully Yes No Replace fuse Yes No B wire harness faulty Yes Ti if GND wire harness side to radio is No GND faulty Yes Radio receiver assembly faulty Radio POWER COMING IN BUT RADIO NOT OPERATING If radio side faulty Yes Goto No 23 Radio receiver assembly faulty No Speaker wire harness faulty Yes Is tape player operating normally Is there continuity in speaker wire harness Yes Temporarily install another speaker Function OK No Radio receiver assembly faulty 3 Rado NOISE PRESENT BUT AM FM NOT OPERATING Go to No 23 Radio receiver assembly faulty If radio side faulty speaker faulty V06272 2000 LEXUS LS400 RM717U Author Date 2071 BE 209 BODY ELECTRICAL _AUDIO SYSTEM 4 Radio EIT
12. plifier Yes Temporarily install another woofer speaker Functions OK No Is there continuity in speaker wire harness Yes Temporarily install another power amplifier Functions OK Yes Power amplifier faulty 2000 LEXUS LS400 RM717U No No No No Yes No No GND faulty B and B2 wire harness faulty Check the radio receiver assembly Wire harness faulty Woofer speaker faulty Speaker wire harness faulty Radio receiver assembly faulty Author Date V06277 2076 BE 214 BODY ELECTRICAL Tape Player Functions OK if different cassette tape inserted Yes No Operates normally after cleaning the heads See page BE 203 Yes No Is radio operating normally No Yes Is speaker properly installed No Yes Temporarily install another speaker Yes Functions OK No Radio receiver assembly faulty Tape Player AUDIO SYSTEM SOUND QUALITY POOR VOLUME FAINT Cassette tape faulty Head dirty Radio receiver assembly faulty Install properly Speaker faulty TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO REVERSE Functions OK if different tape less than 120 mins Yes is inserted No Is there a foreign object inside tape player Yes Yes No Operates normally after cleaning the heads See page BE 203 No Radio receiver assembly faulty 2000 LEXUS LS400 RM717U Cassette tape faulty Remove foreign ob
13. pplied to CD auto changer ACC wire harness faulty Check if GND wire harness side to CD auto No GND wire harness faulty changer is OK Yes Is there continuity in CD auto changer wire har ness to radio receiver assembly Wire harness faulty to radio receiver assembly Yes Temporarily install another CD auto changer No Radio receiver assembly faulty Functions OK CD auto changer faulty poen Oe V06281 2000 LEXUS LS400 RM717U Author Date 2080 BODY ELECTRICAL AUDIO SYSTEM No Is there continuity in speaker wire harness Speaker wire harness faulty Yes Temporarily install another speaker Functions OK speaker faulty Go to step 17 A 18 CD Player SOUND JUMPS Does sound jump only during strong vibration Jumping caused by vibration No m Install properly Y eS CD faulty Yes Formation of condensation due to temp change Is B applied to CD auto changer 5o B wire harness faulty Yes Is ACC applied to CD auto changer Nom ACC wire harness faulty Is CD auto changer properly installed Functions OK if different CD inserted No Does sudden temperature changer occur in lug gage compartment Yes Check if GND wire harness side to CD auto No GND wire harness faulty changer is OK Yes Is there continuity in
14. s If radio side faulty Is tape player operating normally Yes Go to No 28 Radio receiver assembly faulty No Is speaker properly installed No f install properly Yes Temporarily install another speaker Functions Yes Speaker faulty OK No Radio receiver assembly faulty o gt l Is sound quality bad in certain areas only Yes _ Poor signals poor location No Radio receiver assembly faulty V03663 2000 LEXUS LS400 RM717U Author Date 2073 BE 211 BODY ELECTRICAL AUDIO SYSTEM CANNOT SET STATION SELECT BUTTON PRESET MEMORY DISAPPEARS Yes Can cassette tape be inserted in tape player Radio receiver assembly faulty _ No No Replace fuse Check if DOME and RADIO No 2 fuses are OK Yes acsom No Are ACC and B applied to radio receiver assem bly ACC and B wire harness faulty Yes Check if GND wire harness side to radio is OK No GND faulty Radio receiver assembly faulty e Tape Player CASSETTE TAPE CANNOT BE INSERTED Is there a foreign object inside tape player us Remove foreign object n No Is auto search button of radio operating normally No Check if DOME and RADIO No 2 fuses are OK Y Are ACC and B applied to radio receiver assem Yes bly es No Yes Radio receiver assembly faulty l Ais Replace fuse Check if GND wire harness side to radio receiver assemb
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