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 water pump engine off (WP 0022). Turn battery disconnect switch to OFF
position (WP 0007). Remove cab instrument panel E (WP 0311). Disconnect main
wire harness personnel cab pressure governor 12-terminal wire harness connector.
Open pump house panel A (WP 0539). Disconnect pump operator's panel wire
harness ECU wire harness connector. With a test lead set, check for continuity across
wire 1967 from personnel cab pressure governor 12-terminal connector, terminal 9 to
ECU connector, terminal 23.
If continuity is not present, go to Step 10.
With a test lead set, check for continuity across wire 1966 from personnel cab pressure
governor 12-terminal connector, terminal 1 to ECU connector, terminal 25.
If continuity is not present, go to Step 9.