Signal Missing. Permanent Fault

Signal missing. Permanent fault

Checking connector








- Ignition off.
- Check turbocharger (TC) control valve connector for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Reinstall components, reconnect connectors etc.
- Ignition on.
- Activate turbocharger (TC) control valve.
- A click should be heard from the turbocharger (TC) control valve.
If the function is OK the cause of the fault was loose connections in the connector.

Other information
- To access/replace the turbocharger (TC) control valve, see Replacing the turbocharger (TC) control valve, B5254T2 Replacing the Turbocharger (TC) Control Valve









Is the function OK?

Yes - FAULT FOUND

No - Checking component and wiring

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Checking component and wiring
Check signal cable between engine control module (ECM) #A38 (#A38) and turbocharger (TC) control valve #2 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check power supply cable between turbo charger valve #1 and system relay for an open-circuit 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, B5254T2 Connecting the Test Box.
- To access/replace the turbocharger (TC) control valve, see Replacing the turbocharger (TC) control valve, B5254T2 Replacing the Turbocharger (TC) Control Valve.
- For information about signals on 5-cylinder engines, see Signal specification Signal Specification.
- For information about signals on 6-cylinder engines, see Signal specification Signal Specification.
- Turbocharger (TC) control valve #1 has power supply via the system relay.













Continue - Verification

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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 - Verification completed

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 connector

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