Signal Too Low. Intermittent Fault

Checking Cables And Terminals
- Check idle air control (IAC) valve and engine control module (ECM) connectors for contact resistance, oxidation and loose connections.
- Check cable between main relay (2/32) terminal 3 and idle air control valve terminal 2 for an intermittent open-circuit.
- Check cable between idle air control valve terminal 1 and engine control module # A25 for an intermittent short-circuit to ground.
- Check cable between idle air control valve terminal 1 and engine control module # A25 for an intermittent short-circuit to opening coil signal cable.

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:
^ Return to Checking Cables And Terminals section above.

No:
^ Operation done.