Signal Too High. Permanent Fault

Signal too high. Permanent fault

EFI-242 Turbocharger (TC) control valve, signal.

Checking turbocharger (TC) control valve








- Ignition off.
- Disconnect turbocharger (TC) control valve.
Connect an ohmmeter between turbocharger (TC) control valve connector terminals 1 and 2.









The ohmmeter should read approximately 24 ohms at +20°C.

OK - Checking for a short-circuit

Not OK - Replacing component

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Checking for a short-circuit








- Check cable between turbocharger (TC) control valve terminal 2 and engine control module (ECM) #B41 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.





Continue - Verification

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Replacing component
- Try a new turbocharger (TC) control valve.

Continue - Verification

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Verification




Verification

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




- Ignition on.




- Select Volvo Scan Tool (ST) to activate turbocharger (TC) control valve.
- A clicking sound should be heard from the turbocharger (TC) control valve when it is activated.

Is the turbocharger (TC) control valve working?

Yes - VERIFIED

No - VERIFICATION FAILED

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking turbocharger (TC) control valve

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