Signal Missing. Permanent Fault

Signal missing. Permanent fault

Checking component and wiring
Check engine cooling fan (FC) relay connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the power supply cable for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , also check that the fuse has not blown.
Check cable between engine control module (ECM) #A6 and engine cooling fan (FC) relay #IN2 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, B5234T9, B5244T7 Connecting The Breakout Box.
- For information about signals, see Signal specification Signal Specifications.
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.














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.
- Disconnect the Volvo Scan Tool (ST) from the VIDA station. Use it in stand alone mode and connect it to the data link connector (DLC) in the car.
- Ignition on.
- Go into scrolling values.
Check the outside temperature reading is correct. Compare with the actual air temperature.





Is the temperature reading OK?

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 component and wiring

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