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). Put cab PUMP COOLER
switch to off position (WP 0004). Remove cab instrument panel A (WP 0311). Remove
relay 2 (WP 0402). Turn battery disconnect switch to ON position (WP 0007). Check
for 22 to 28 VDC between cab power distribution wire harness wire 2865 (gray) at relay
2 connector, terminal 3 and a known good ground.
If 22 to 28 VDC are not present, go to Step 24.