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 EMERG MASTER and F/R LOWER WARNING switches to off position (WP 0004).
Turn Service Drive Lights Off (TM 9-2320-347-10). Turn battery disconnect switch to
OFF position (WP 0007). Remove cab instrument panel A (WP 0311). Remove fuse
FS 10 (WP 0401). Check for continuity across fuse FS 10 terminal connectors.
If there is no continuity, replace fuse FS 10 (WP 0401).
Install fuse FS 10 (WP 0401). Disconnect main wire harness passenger side body wire
harness connector. Turn battery disconnect switch to ON position (WP 0007). Turn
Service Drive Lights On (TM 9-2320-347-10). With a test lead set, check for 22 to 28
VDC between main wire harness wire 1189 (red) at main wire harness passenger side
body wire harness connector, terminal C and a known good ground.
If 22 to 28 VDC are present, go to Step 6.