Faulty Signal

Faulty signal. Permanent fault

Checking parameters




- Visually check if the vehicle is equipped with a front passenger airbag.
- Ignition on.
Read out and compare the "front passenger airbag" parameter from the supplemental restraint system module (SRS) and the central electronic module (CEM).
Click the VCT2000 symbol to activate the readout.
If the vehicle is equipped with a front passenger airbag:
The supplemental restraint system module (SRS) should respond "With front passenger airbag".
The central electronic module (CEM) should respond "Yes".
If the vehicle is not equipped with a front passenger airbag:
The supplemental restraint system module (SRS) should respond "Without front passenger airbag".
The central electronic module (CEM) should respond "No".





Does the "front passenger airbag" parameter of both SRS and CEM match the equipment of the vehicle?

Yes - Verification

No - Programming the control module

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Programming the control module
Try reprogramming the control module that indicates a faulty parameter value.
- Supplemental restraint system module (SRS): Control module SRS (supplemental restraint system), replacing Service and Repair.
- Central electronic module (CEM): Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing.


Continue - Verification

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Verification




Verification

Verification

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




- Ignition off
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead.

Warning! There must not be anyone inside the passenger compartment when the battery is connected.

- Read off diagnostic trouble codes (DTCs).
The fault is no longer present if the diagnostic trouble code (DTC) status is intermittent.





Is the diagnostic trouble code (DTC) intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking parameters

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