Fault-Tracing Information

Fault-tracing

Checking the component and wiring
Check the battery voltage and condition.
Check the charging function of the generator (GEN).
Check the power cable with regard to open circuit.
Take readings between:
- Engine Control Module (ECM) #B3 (#C3) and system relay.
Check the cable for an open-circuit.
Take readings between:
- Engine Control Module (ECM) #B27 (#C27) and system relay.
Check the engine control module (ECM) and the system relay connector. Check for contact resistance. Check for oxidation.
Try a new system relay if no fault is found during the above fault-tracing.
Remedy as necessary.

Other information
- Connecting the breakout box, B5254T7 Connecting the Breakout Box, Engine Control Module (ECM)
- Signal specification, B5254T7 Signal Specification
- For further information about the fuses and relays, see the Wiring Diagram.
- Checking wiring and terminals Checking Wiring and Terminals









Continue - Verification

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Verification




Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the battery voltage.
Check that the battery voltage is correct.





Is the value correct?

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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the component and wiring

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