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.
Turn battery disconnect switch to OFF position (WP 0007). Remove driver side crew
cab panel (WP 0499). Remove pump house panel Q (WP 0540). Disconnect main
wire harness pump operator's panel wire harness connector. Remove skid plate grille
(WP 0550). Disconnect main wire harness main 2 connector. With a test lead set,
check for continuity across main wire harness wire 4037 (orange) from main wire
harness pump operator's panel wire harness connector DO1, terminal H to main 2
connector, terminal H.
If there is continuity, repair wire 4037 in cab power distribution wire
harness if repairable (TM 9-2320-325-14&P), or replace cab power
distribution wire harness and block (WP 0441).
If there is no continuity, repair wire 4037 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0455).