Signal Too High. Intermittent Fault

Checking Cables and Terminals
- Check mass air flow (MAF) sensor and engine control module (ECM) connectors for loose connections, contact resistance and oxidation.
- Check cable between mass air flow sensor terminal 1 and engine control module # A3 for an intermittent open-circuit.
- Check cable between mass air flow sensor terminal 2 and engine control module # A5 for an intermittent open-circuit according.
- Check cable between mass air flow sensor terminal 4 and engine control module # A4 for an intermittent short-circuit to supply voltage.
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
For intermittent faults fault-tracing is not followed by a verification because the fault is not present at this moment.

- Do you want to repeat fault-tracing?

Yes:
^ Proceed to: Checking Cables and Terminals section above.

No:
^ Operation done.