Diesel Data: Automotive Repair

JJ17 Check Power to Relay Coil







- Jumper pins 34 and 60 at breakout box.

- Turn ignition switch to RUN position.

- Measure voltage between pin 86 and ground.

- Is voltage over 10 volts?

YES -- Go to JJ18. JJ18 Check Pump Motor Relay Coil

NO -- Service circuit 532.