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.
Put cab GROUND SWEEPS switch to OFF position (WP 0004). Turn battery
disconnect switch to OFF position (WP 0007). Remove cab instrument panel B
(WP 0311). Disconnect wire 2772 (gray) terminal connector from GROUND SWEEPS
indicator. Disconnect cab pump control wire harness GROUND SWEEPS switch
connector from GROUND SWEEPS switch. Check for continuity across cab pump
control wire harness wire 2772 (gray) from GROUND SWEEPS switch connector,
terminal 6 to GROUND SWEEPS indicator terminal connector.
If there is no continuity, repair wire 2772 in cab pump control wire harness if
repairable (TM 9-2320-325-14&P), or replace cab pump control wire
harness (WP 0443).