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.
Connect air lines at ground sweeps nozzles valve. Turn battery disconnect switch to
OFF position (WP 0007). Disconnect valve control wire harness ground sweeps control
valve connector. Turn battery disconnect switch to ON position. Put GROUND
SWEEPS switch to on position (WP 0004). With a test lead set, check for 22 to 28 VDC
between valve control wire harness wire 2772 (gray) at valve control wire harness
ground sweeps control valve connector, terminal 1 and a known good ground.
If 22 to 28 VDC are not present, go to Step 10.