## Diesel Engine Management System

#### DTC Troubleshooting (cont'd)

11-58

1. Turn the ignition switch OFF.

1. 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.

1. 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.

a a a