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.
Remove crew cab access panel (WP 0499). Remove pump house panel Q (WP 0540).
Disconnect main wire harness pump operator's panel wire harness connector DO2.
With a test lead set, check for 22 to 28 VDC between main wire harness wire 2854 (red)
at main wire harness pump operator's panel wire harness connector DO2, terminal 17
and a known good ground.
If 22 to 28 VDC are present, repair wire 2854 in pump operator's panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump operator's
panel wire harness (WP 0459).