86 Corvette Service Manual
Contents
1. WARNINGS AND ALARMS CHIME ak AR I PNK BLK 39 GEN 240 see pope pape Le SPNKMHT 40 35 PNK BLK um t AUDIO ALARM MODULE CHIMES 35 SLK i 238 E TELLTALE ASSEMBLY SEATBELT SWITCH I OPEN WITH DRIVERS SEATBELT BUCKLED KEY WARNING SWITCH CLOSED WITH KEY IN ACCY LOCK OR OFF 1 JAMB SWITCH 4 CLOSED WITH OO0R OPEN X WARNINGS AND ALARMS CHIME SYSTEM CHECK FO l Seatbelt Warning Sit in the driver s seat with the LH front door closed Turn the Ignition Switch to RUN and do not buckle the seatbelt e A slow chime alarm sounds e FASTEN SEATBELT Indicator lights in the Telltale Assembly e Chime stops and indicator goes out after 4 to 8 seconds Key Warning With the Ignition Switch OFF but the key still in the ignition open the LH front door e Fast chime alarm sounds faster than the seatbelt chime Remove the key from the Ignition Switch e Alarm stops Lights On Warning With the key removed from the ignition turn the Light Switch to PARK e Fast pulsed chime alarm sounds faster than key chime Light Switch to OFF e Alarm stops TROUBLESHOOTING HINTS 1 Check the GAGES Fuse by operating the Header Map Light with the Ignition Switch in RUN Check the CTSY CIG Fuse by operating the Glove Box Light Ch2. BULB TEST or START voltage is applied through the Gages Fuse to the solid state unit in the Audio Alarm Module These two volt ages are sensed by the solid state unit and the alarm is not sounded When the Ignition Switch is turned to OFF the Gages Fuse loses voltage and the solid state unit senses the change If voltage is still available from the Light Switch the chime sounds The chime can be turned off by turning the Light Switch knob to OFF The Audio Alarm Module no longer senses the voltage from the Light Switch so the alarm does not sound Ignition Key Reminder Voltage is applied to the CTSY CLK Fuse at all times Whenever the key is in the Ignition Switch and in ACCY LOCK or OFF and the driver s door is open a ground path is provided for terminal 6 of the Audio Alarm Module Seatbelt Reminder With the Ignition Switch in RUN BULB TEST or START voltage is applied to the Audio Alarm Module timer and the solid state unit Voltage is applied through the timer to the FASTEN SEATBELTS Indicator Volt age is also applied through the timer to the solid state unit When the Seatbelt Switch is not buckled a ground path is provided for the solid state unit The indicator will light and the chime will sound for 4 8 seconds which at that time the timer contacts open and remove voltage supplied to the indicator and solid state unit If the seatbelt is buckled only the indicator will light Z GL Y8 ILL
3. IAHOD
4. eck that G201 is clean and tight I R COMPONENT LOCATION Page Figure Audio Alarm Module Center of I P in multi use center 201 7 A Fuse Block In RH end OF isis bene eea 201 10 A Ignition Key Warning Switch Top of steering column below turn hazard switch assembly Seatbelt Switch Part of drivers LH seatbelt assembly 201 9 A C104 11 cavities Behind I P top RH center of steering column 201 4 B GOL ras Behind I P near LH side of steering column S206 EE NE I P harness behind multi use center 201 10 A JAN ale as era SE EEE I P harness right of steering column 201 8 A SINNE I P harness left of multi use center 201 10 A D EEE EN I P harness above steering column 201 10 A ka 0 ae EO EE ort aes I P harness left of multi use center 201 10 A SYSTEM DIAGNOSIS Remove the Audio Alarm Module connec tor Test for Battery voltage with a test lamp to ground at the terminals in the following chart Put the Ignition Switch in RUN and Light Switch in PARK TEST LAMP CONVENIENCE CENTER Light Switch in PARK D2 PNK BLK Terminal Bl Light e If the test lamp does not light check the circuit and wiring supplying that terminal 2 With the Audio Alarm Module still removed test the circuits to ground at the following termina
5. ls using a test lamp con nected to Battery voltage ILLIAYUOD L G Y8 gt WARNINGS AND ALARMS CHIME m TEST LAMP TO 12 VOLTS AUDIO ALARM MODULE CONNECTOR Terminal Wire Colors LH Front Door Open and Key in Ignition ACCY LOCK or OFF LH Front Door Lights Off Closed and Key in C1 Ignition ACCY LT GRN LOCK or OFF LH Frent Door Open and Key out of Ignition or Key in Ignition RUN BULB TEST or START Lights Seatbelt Unbuckled Off Seatbelt Buckled All Times A2 BLK B2 BLK Lights e If any test is not correct troubleshoot the circuit to that terminal e If the test lamp lights go to the next step 3 With the module still removed connect a fused jumper between terminal Bl and ter minal C1 of the Audio Alarm Module Con nector and observe the FASTEN SEATBELT Indicator e If the indicator does not light check wiring to and from the Instrument Panel If the wiring is good the prob lem is in the cluster See Page 82 0 Test Lamp e If the indicator lights replace the Audio Alarm Module CIRCUIT OPERATION This circuit needs voltage through the Light Switch CTSY CLK Fuse and the Gages Fuse to operate Voltage is applied to the Light Switch at all times When the Light Switch is in HEAD or PARK this voltage is applied to the Solid state unit in the Audio Alarm Mod ule When the Ignition Switch is in RUN
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