System B 05 - W/Side Air Bags

Fault codes 6, 7, 22, 23, 37

Driver's seat belt tensioner

Diagnostic conditions
- Ignition on

Possible cause of fault
- Incorrect coding
- Short circuit to B+/ground or open circuit in the wiring between the driver's seat belt tensioner and the control module
- Driver's seat belt tensioner faulty
- Triggering unit for airbag faulty

NOTE: The contacts in the seat belt tensioner are very sensitive. When connecting the adapter cable No. 9516/3, ensure that both special tool contacts are connected parallel and simultaneously.

Affected terminals

Terminals 1 and 2 in left-hand drive vehicles
Terminals 3 and 4 in right-hand drive vehicles

Diagnosis/Troubleshooting

Work Instruction 1:

Work Instruction 2 - 3:

Test Tool No. 9516 And Adapter Cable No. 9516/3 Instead Of The Seat Belt Tensioner

Work Instruction 4 - 5:

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.