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.
Install fuse FS 20 (WP 0401). Disconnect cab pump control wire harness cab power
distribution wire harness connector. Turn battery disconnect switch to ON
position (WP 0007). With a test lead set, check for 22 to 28 VDC between cab power
distribution wire harness wire 2342 (red) at cab pump control wire harness cab power
distribution wire harness connector, terminal 4 and a known good ground.
If 22 to 28 VDC are not present, repair wire 2342 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).