TEST OR INSPECTION
Connect cab pump control wire harness cab power distribution wire harness connector.
Remove driver side crew cab access panel (WP 0499). Remove pump house panel
Q (WP 0540). Disconnect main wire harness pump operator's panel wire harness
connector DO2. With a test lead set, check for 22 to 28 VDC between main wire
harness wire 2342 (red) at main wire harness pump operator's panel wire harness
connector DO2, terminal 1 and a known good ground.
If 22 to 28 VDC are not present, go to Step 16.