Faulty Signal

Faulty signal

Checking components and connectors




- Ignition off
- Check the intake air temperature (IAT) sensor connector and terminal. Check for contact resistance and oxidation.
- If no errors are found and the fault returns as a permanent fault, replace the intake air temperature (IAT) sensor
- Remedy as necessary.

Other information
- For resistance values, see Component specifications Specifications
- To access or replace the intake air temperature (IAT) sensor, see Temperature and pressure sensor, replacing Engine Temperature Sensor
- 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
- Reconnect the connectors, reinstall components etc.
- Start the engine. Allow the engine to idle for 5 minutes
- Read off diagnostic trouble codes (DTCs).
The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.





Is the status of the diagnostic trouble code (DTC) intermittent?

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 components and connectors

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