TEST OR INSPECTION
Turn battery disconnect switch to OFF position (WP 0007). Remove driver side crew
cab access panel (WP 0499). Remove pump house panel Q (WP 0325). Disconnect
pump operator's panel wire harness main wire harness connector DO 2. With a test
lead set, check for continuity across pump operator's panel wire 1590 (red) from pump
operator's panel primer pump motor diode connector, terminal B, to pump operator's
panel wire harness main wire harness connector DO 2, terminal 18.
If continuity is not present, repair wire 1590 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).