Fault-Tracing

Fault-tracing ECM-P122400

Checking components and connections




- Engine idling
- Activate read-out of the throttle damper's current position and the throttle damper's reference value.
- Check that both signals follow each other at different rpms and movements of the throttle disc.
- Ignition off.
Check if the throttle unit is blocked. Press the throttle disc to check for jamming.
Clean the throttle unit if necessary.

Other information
- Throttle body (TB), cleaning, B8444S Procedures
- Throttle body (electronic throttle module (ETM)), replacing, B8444S Removal and Replacement









Continue - Verification

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Verification




Verification

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








- Engine idling
- Reinstall the connectors, components etc.
- Ignition on.
Activate read-out of the throttle damper's current position and the throttle damper's reference value.
Check that both signals follow each other at different rpms and movements of the throttle disc.





Do the signals follow each other?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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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 components and connections

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