Signal Too Low. Intermittent Fault

Checking Cables And Terminals
- Check pulsed secondary air injection system (PAIR) pump relay and engine control module (ECM) connectors for loose connections, contact resistance and oxidation.
- Check cable between the pulsed secondary air injection system pump relay terminal and engine control module # B38 for an intermittent open-circuit and an intermittent short-circuit to ground.
- Check cable between pulsed secondary air injection system pump relay (2/53) terminal 2 and main relay (2/32) terminal for an intermittent open-circuit.
- 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.