System B 05 - W/Side Air Bags
Fault codes 55, 87
Passenger's side airbag
Diagnostic conditions
- Ignition on
Possible cause of fault
- Short circuit to B+/ground or open circuit in the wiring between the passenger's airbag sensor and the airbag triggering unit.
- Passenger's airbag sensor faulty
Affected terminals
Terminals 5, 6 and 21
Diagnosis/troubleshooting
Work Instruction 1 - 3
Airbag Diagnosis System B05
Fault Codes 70, 71, 72, 73
Child seat detection
Diagnostic conditions
- Ignition on
Possible cause of fault
- Incorrect coding
- Plug connection of child seat detection belt buckle not connected or damaged
- Short circuit to B+/ground or open circuit in the wiring between the airbag triggering unit and the child seat detection belt buckle
- Child seat detection belt buckle faulty
NOTE:
- When the coding is changed in the menu item "Change coding", the ignition must always be switched off afterwards and the key removed.
- After the ignition is switched on again, the new coding from the airbag triggering unit is updated and the stored faults can be erased.