Fault-Tracing Information

Fault-tracing

Checking the component
Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Hint: The operation of the turbocharger (TC) control valve can be intermittent. A damaged turbocharger (TC) control valve can be difficult to detect during activation.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check that the pressure servo for the boost pressure control (BPC) valve is functioning correctly.
Check the operation of the boost pressure control (BPC) valve. Check that the boost pressure control (BPC) valve is not sticking.
Remedy as necessary.

Other information
- Actuator turbo pressure (vacuum), B6304T4, TF-80SC AWD Service and Repair





Continue - Verification

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Verification




Verification

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








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic.
- Connect VCT2000 to the data link connector (DLC) without switching off the engine.

Note! If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated.

Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list.
Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the diagnostic is not complete after the test drive, further test driving is required. If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.





Is the function OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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Fault-tracing information

Attempt New Test - Checking the component

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