Signal Too High

Signal too high

Checking hoses and the turbocharger (TC) control valve
Check the hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve. Check that the hoses are not trapped, blocked or damaged.
Check the hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)). Check that the hoses are not trapped, blocked or damaged.
Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

5 cylinder engines:
Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking:
Wastegate valve, adjusting, B5254T2 Wastegate Valve, Adjusting

6 cylinder engines:
Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking:

Other information:
- Replacing the turbocharger (TC) control valve, B5244T5, B5254T2 Service and Repair.





Continue - Verification

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Verification




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 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




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 hoses and the turbocharger (TC) control valve

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