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 3 (WP 0401). Remove cab instrument panel C (WP 0311). Disconnect
cab instrument panel wire harness F/R LOWER WARNING switch connector. Turn
battery disconnect switch to ON position (WP 0007). Turn Service Drive Lights On
(TM 9-2320-347-10). Put EMERG MASTER switch to on position. (WP 0004). Check
for 22 to 28 VDC between cab instrument panel wire harness wire 1627 (blue) at cab
instrument panel wire harness F/R LOWER WARNING switch connector, terminal 6 and
a known good ground.
If 22 to 28 VDC are present, go to Step 8.