Faulty Signal

Faulty signal

Checking components and connectors




- Ignition off
- Check the mass air flow (MAF) sensor connector and terminal. Check for contact resistance and oxidation.

Note! The intake air temperature (IAT) sensor is integrated in the mass air flow (MAF) sensor.

Remedy as necessary.
- If no faults are found and the fault returns as a permanent fault, replace the intake air temperature (IAT) sensor.

Other information
- Checking wiring and terminals Checking Wiring And Terminals
- For resistance values, see Component specifications Specifications
- To access or replace the mass air flow (MAF) sensor. Service and Repair.













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 - Verification completed

No - 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 components and connectors

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