Fault-Tracing

Fault-tracing

Checking the status




- Start the engine.
Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Increase the engine speed a few times until the scan is "Implemented".
Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed".
The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Note! The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.





Continue - Checking components and wiring

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Checking components and wiring








- Ignition off
- Disconnect the engine control module (ECM).
Check the signal cables. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit.
Check between:
- Control module #A30 (#A30) and engine speed (RPM) sensor connector terminal #1, signal cable (+).
- Control module terminal #A6 (#A6) and engine speed (RPM) sensor connector terminal #2, signal cable (-).

Hint: The diagnostic trouble code (DTC) may be the result of a damaged flywheel.

Remedy as necessary.

Other information
- Connecting the breakout box, B8444S Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification, B8444S Signal Specification, Engine Control Module (ECM)
- Crankshaft position sensor (CKP), B8444S Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals









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 components and wiring

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Verification




Verification

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








- Ignition off
- Reconnect the connectors, components, etc.
- Start the engine.
- Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Increase the engine speed a few times until the scan is "Implemented".
Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.





Is the function OK?

Yes - Troubleshooting complete for this DTC

No - Fault-tracing information

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