Faulty Signal

Faulty signal

Checking components and connections

Note! If there are other diagnostic trouble codes (DTCs) stored in the engine control module (ECM), these must be fault traced first.




- Ignition on
- Activate the ranking values read out
- Check the ranking values for the diagnostic trouble codes (DTCs) listed in the smart tool by marking the relevant code.
This diagnostic trouble code (DTC) indicates that the engine emissions were too high due to fuel shut-off.
To determine the fault which caused the increased emissions, the ranking values must be read off. By looking at the ranking values, the fault can be found even though no diagnostic trouble code (DTC) is stored. For further information about the ranking values, see Ranking values Ranking Values.
The measuring tool for this fault-tracing reads off the ranking values for diagnostic trouble codes (DTC) ECM-3100, ECM-310A, ECM-900C and ECM-990F. These diagnostic trouble codes (DTC) can use fuel shut-off as a substitute value.
The ranking values vary between 0 and 255. If any of the diagnostic trouble codes (DTCs) have a ranking value above 128, these must be fault-traced using the standard procedures.






Continue - Verification

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Verification




Information

Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking components and connections

FAULT FOUND - 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 components and connections

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