Operator Troubleshooting Table
TEST OR INSPECTION
ELECTRICAL SYSTEM - continued
ONE OR MORE LIGHTS WILL NOT LIGHT - continued.
Check for dirty or corroded connectors at back of light.
If cleaning does not correct the malfunction, notify
DIM OR FLICKERING LIGHTS.
Check electrical connectors at light for loose, dirty or corroded
If connections are loose, tighten.
If connector pins are dirty or corroded, clean pins (para. 3-5).
If connections are tight and clean, go to step 2.
Check for defective bulb.
If bulb is defective, notify Organizational Maintenance.
If bulb is not defective, and malfunction is not corrected,
notify Organizational Maintenance.
BRAKES WILL NOT RELEASE.
Check that towing vehicle to semitrailer air supply is turned on.
If air is shut off, turn on air supply.
If air supply is on, go to step 2.
Check air pressure of towing vehicle.
If pressure is low, build up air pressure to normal level.
If pressure is normal, go to step 3.
Check air line connections at gladhands.
If air lines are not properly connected (Emergency to Emergency,
Service to Service), reconnect air lines.
If air lines are connected properly, go to step 4.