TEST OR INSPECTION
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Disconnect pump house wire harness glow plug control relay connector. While an
assistant puts START PUMP ENGINE START switch to START position (WP 0004),
check for 22 to 28 VDC across pump house wire harness wire 4072 (green) from pump
house wire harness glow plug control relay connector, terminal 2 to a known good
If 22 to 28 VDC are not present, repair wire 4072 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0458).