Checking Mass Air Flow Sensor Connector

Checking The Mass Air Flow Sensor Connector
- Clean and grease mass air flow (MAF) sensor connector.
- Check to see if symptom persists.
- Do the fault symptoms persist?

Yes:
^ Proceed to test step below.

No:
^ Operation done.





Connecting The Test Box
- Connect the test box and check ground terminals.
- Connect engine control module (ECM).
- Check all signals to and from engine control module.

^ Operation done.