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 driver side crew cab panel (WP 0499). Remove pump house panel
Q (WP 0540). Turn battery disconnect switch to OFF position (WP 0007). Disconnect
main wire harness pump operator's panel wire harness connector DO1. Turn battery
disconnect switch to ON position (WP 0007). With a test lead set, check for 22 to 28
VDC between main wire harness wire 2315 (yellow) at main wire harness pump
operator's panel wire harness connector, terminal M to a known good ground.
If 22 to 28 VDC are present, repair wire 2315 in valve control wire harness if
repairable (TM 9-2320-325-14&P), or replace valve control wire
harness (WP 0463).