SERVICE MANUAL UPDATE SEAT BELT WARNING SYSTEM
Models Affected: 1988-89 GRAND PRIX SERVICE MANUAL UPDATE
The following information is to replace the text concerning safety belt warning system operation in paragraphs 2 and 3 of Restraint System (Page 10-10-1) of the 1988 and 1989 Grand Prix Service Manuals.
"The driver's safety belt system includes a reminder lamp and tone alarm to warn the driver that the safety belt is not buckled. If the driver's safety belt is not buckled when the ignition is turned on, the tone alarm will operate for 4 to 8 seconds, and the reminder lamp will remain lit.
If the driver's safety belt is buckled when the ignition is turned on, neither the tone alarm nor reminder lamps will operate."
To diagnose a condition involving the tone alarm or reminder light, refer to the attached revision of page 76-2 of Section 8A-76-2 of your 1988 and 1989 Service Manuals.
WARNING
S AND ALARMS
TROUBLESHOOTING HINTS
- Try the following checks before doing the System Diagnosis.
1. Check STOP Fuse by observing the Stop Lights.
2. Check INDIC Fuse by observing SERVICE ENGINE SOON Indicator with the Ignition Switch in RUN and Engine off.
3. Check TAIL Fuse by observing the Park Lights.
4. Check that grounds G103, G303 and G101 are clean and tight.
5. If the Fasten Belts Chime Reminder and FASTEN BELTS Indicator operate continuously, replace the Audio Alarm Module.
- Go to System Check for a guide to normal operation.
- Go to System Diagnosis for diagnostic tests.
SYSTEM CHECK
- Use the System Diagnosis for a list of symptoms and diagnostic steps.
SYSTEM CHECK
ACTION NORMAL RESULT
Sit in driver's seat and Fasten Belts alarm close driver's door sounds Turn Ignition Switch FASTEN BELTS to RUN Indicator lights in the Instrument Cluster Do not buckle Alarm stops after 4 safety belt to 8 seconds
Repeat previous steps No alarm sounds, but buckle safety belt and indicator goes out when belt is buckled With the key still in Key In Ignition the Ignition, open alarm sounds LH door
Remove key from Alarm stops the Ignition
With Key removed Lights-On alarm from Ignition, turn sounds Light Switch to PARK
Turn Light Switch Alarm stops
- Refer to System Diagnosis when a result is not normal.
SYSTEM DIAGNOSIS
- Do the tests listed for your symptom in the Symptom Table below. - Tests follow the Symptom Table.
SYMPTOM TABLE
SYMPTOM DO TEST
None of the alarms A. Chime Module operate Test
Only Key In Ignition B. Key in Ignition alarm does not Input Test operate
Key In Ignition B. Key In Ignition alarm operates when Input Test it should not
Fasten Belts alarm C. Fasten Belts does not operate Input Test
Fasten Belts alarm C. Fasten Belts operates when safety Input Test belt is buckled
FASTEN BELTS D. FASTEN BELTS Indicator does not Indicator Test operate, but Fasten Belts alarm operates
FASTEN BELTS D. FASTEN BELTS Indicator is always Indicator Test on, but the alarm operates properly
Only Lights-ON E. Lights-On Input alarm does not Test operate
Lights-On E. Lights-On Input alarm operates when Test it should not
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
