Fault-Tracing

Fault-tracing

Checking the wiring and terminals








- Ignition off, wait for 10 seconds.
- Disconnect the connector to the roof lighting control unit.
- Disconnect the connector for Supplemental restraint system module (SRS).
Check connectors for damage to pins and connections.
Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation.
Also check the other connectors and terminals that join the cable between the supplemental restraint system module (SRS) and the roof lighting control unit.
Check the cable for a short-circuit to supply voltage.
Take readings between:
- Supplemental restraint system module (SRS) terminal #C2:70(#A45) and the connector for the roof lighting control unit terminal #C1:7.
Remedy as necessary.

Other information
- Connecting the breakout box Connection of Breakout Box, Supplemental Restraint System Module (SRS)
- Signal specification Signal Specification, Supplemental Restraint System Module (SRS)
- For further information, see the wiring diagram.
- Lighting, internal front Lighting, Internal Front
- Air bag supplemental restraint system Service and Repair
- Cable harness SRS system, repair Cable Harness SRS System, Repair
- Checking wiring and terminals Checking Wiring and Terminals

Select "Continue" when the fault has been remedied.

Continue - Verification

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring and terminals

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Verification




Verification

Hint: After carrying out the repair check that the fault has been remedied.




- Reinstall the connectors, components etc.
- Switch on the ignition. Wait 10 seconds.
Read diagnostic trouble codes by clicking the VCT2000 symbol.
If the fault is intermittent, the fault has been remedied.





Is the fault intermittent?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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