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.
Turn battery disconnect switch to OFF position (WP 0007). Remove cab instrument
panel A (WP 0311). Remove fuse FS 21 (WP 0401). Check for continuity across
terminal connectors of fuse FS 21.
If there is no continuity, replace fuse FS 21 (WP 0401).