Signal Missing

Signal missing

Checking the component and wiring
Check the fuse for the circuit.
Check the turbocharger (TC) control valve connector. Check for contact resistance. Check for oxidation.
Check the signal cable between engine control module (ECM) terminal #A51 (#A51) and turbocharger (TC) control valve terminal #2. Check for an open-circuit.
Check the power cable between turbocharger (TC) control valve terminal #1 and the system relay. Check for an open-circuit.

Hint: With the ignition switched on, the reading must be approximately 12 V between turbocharger (TC) control valve terminal #1 and ground.

Remedy as necessary.

Other information
- Connecting the breakout box, B5254T7 Connecting the Breakout Box, Engine Control Module (ECM)
- Signal specification, B5254T7 Signal Specification
- For further information about the fuses and relays, see the Wiring Diagram
- Actuator turbo pressure (vacuum), B5254T7 Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals













Continue - Verification

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Verification




Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the turbocharger (TC) control valve.
A"clicking sound" should be heard when the turbocharger (TC) control valve is activated.





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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the component and wiring

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