Fault-Tracing Information

Fault-tracing ECM-P010100

Checking components and wiring








- Ignition off.
Check the connector and terminals for the mass air flow (MAF) sensor. Check for contact resistance. Check for oxidation. Check the intake system for air leakage.
Remedy as necessary.

Other information
- Air leaks in the intake system, checking, B8444S Check For Air Leaks In The Intake System
- Mass air flow (MAF) sensor, replacing, B8444S Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals









Continue - Checking the mass air flow (MAF) sensor

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Checking the mass air flow (MAF) sensor








- Engine running.
Check and compare the calculated air mass with the actual, read-out from mass air flow sensor.
Try measuring at different speeds (rpm).

Hint: Differences of more than 20 % between the signals indicate a defective mass air flow sensor.

Note! When replacing mass air flow sensor. Repeat the check to verify that the replacement solved the problem.

Remedy as necessary.

Other information
- Mass air flow (MAF) sensor, replacing, B8444S Service and Repair









Is the function OK?

Yes - Verification

No - FAULT-TRACING FAILED

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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 wiring

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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.
- Start the engine and run it to normal operating temperature.
Click on the VCT2000 symbol. Check and compare the calculated air mass with the actual, read-out from mass air flow sensor.





Is the function OK?

Yes - VERIFIED

No - FAULT-TRACING FAILED

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FAULT-TRACING FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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