Signal Too Low - Permanent Fault

Signal too low. Permanent fault

Checking component and wiring
Check cable between engine control module (ECM) #A38 (#A38) and turbocharger (TC) control valve #2 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary

Other information:
- To connect the breakout box, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box.
- To access/replace the turbocharger (TC) control valve, see Replacing the turbocharger (TC) control valve, B5244T5, B5254T2 Service and Repair.
- Turbocharger (TC) control valve #1 has Ubat power supply from the system relay.
- For information about signals, see Signal specification Signal Specification, ECM.














Continue - Verification

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Verification




Verification

Verification

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




- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Activate turbocharger (TC) control valve
- A click should be heard from the turbocharger (TC) control valve.
- Check that the function is OK.









Is function OK ?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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VERIFIED - Fault Found

VERIFICATION FAILED - 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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking component and wiring

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