X161 - Check FP Circuit For Short To Power
- Key Off.
- CCRM disconnected.
- Disconnect PCM. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.
- Key On.
- Measure voltage between Pin 18 of the CCRM vehicle harness connector and the battery negative post.
- Is voltage less than 1.0 volt?
YES -- REPLACE PCM. RECONNECT all components. RE-EVALUATE symptom.
NO -- SERVICE FP circuit short to power. RECONNECT all components. RE-EVALUATE symptom.