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 WINDSHIELD
DELUGE switch to off position (WP 0004). Remove driver side crew cab access
panel (WP 0499). Remove pump house panel Q (WP 0540). Install relay
P6 (WP 0413). Disconnect pump house wire harness windshield deluge pump
connector. Turn battery disconnect switch to ON position (WP 0007). Put
WINDSHIELD DELUGE switch to on position (WP 0004). With a test lead set, check
for 22 to 28 VDC between pump house wire harness wire 1065 (pink) at windshield
deluge pump connector, terminal A and a known good ground.
If 22 to 28 VDC are not present, go to Step 16.