Airbag warning light
Diagnostic conditions
- Ignition on
NOTE: Due to a short circuit bridge in the plug of the triggering unit for the airbag, the warning light wiring short-circuits to ground if the plug is
disconnected.
Possible cause of fault
- Faulty fuse
- Airbag warning light faulty (only up to model year 01 with instrument clusters without fault memory)
- Short circuit to B+/ground or open circuit in the wiring between the instrument cluster and the airbag triggering unit
Affected terminals
Terminal 7
Diagnosis/Troubleshooting
Work Instruction 1 - 2
Airbag Diagnosis System B05
Fault codes 4, 5, 20, 21, 36
Ignition circuit, driver
Diagnostic conditions
- Ignition on
Possible cause of fault
- Short circuit to B+/ground or open circuit in the wiring between the driver's airbag unit and the airbag triggering unit
- Driver's airbag unit faulty
- Triggering unit for airbag faulty
Affected terminals
Terminals 10 and 11
NOTE: If the fault memory is cleared, the ignition must be switched off, the ignition key removed and the ignition switched on again in order to
check the fault path. Only in this way is another self-test carried out.
Diagnosis/troubleshooting