Fault Codes 6, 7, 22, 23, 37

Fault Codes 6, 7, 22, 23, 37

Driver's 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 belt tensioner and the control module
- Driver's belt tensioner faulty
- Triggering unit for airbag faulty

NOTE:
- The contacts in the belt tensioner are very sensitive.
- When connecting test tool No. 9516/4, ensure that both special tool contacts are connected in parallel and simultaneously.
- Once connected, the plug must be locked; this allows the electrical connection to be made.

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. 9516/4 instead of 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.