- Turn the ignition switch OFF.
- Check the RP sensor ground circuit for open.
Wire side of female terminals
RP sensor 3P connector
JUMPER WIRE
Is a problem found?
YES – Repair the RP sensor ground circuit. 
NO – Go to step 13.
- Measure the resistance of RP sensor.
Is there 0.9 – 1.3 kohms
YES – Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM.
NO – Replace the RP sensor.
| NOTICE |
The battery power supply short circuit to 5 V power supply damages the ECM.
