Table 3-1. (Army) Troubleshooting
TEST OR INSPECTION
c. If cable is damaged, refer to unit maintenance.
Step 4. Visually check ground connection at receptacle and check ground wire to towing vehicle.
If ground wire is loose or making poor contact, reposition wire and tighten connections.
Step 5. Visually check all lamps.
a. Replace all burnt out lamp(s).
b. If lamps are not defective, notify unit maintenance of trouble.
LIGHTS OPERATE INTERMITTENTLY.
Step 1. Visually and manually check cable assembly connectors and towing vehicle mating receptacle connections for
Tighten all connectors to ensure proper contact.
Visually check all contacts for contaminants such as oil, water, dirt, and corrosion.
Clean all connectors to remove corrosion and contaminants.
Visually check entire cable assembly for partially severed cable. If cable is damaged, refer to unit
Check that ground wires on trailer and towing vehicle are making proper contact.
Clean ground wire connections and secure tightly as necessary.
LIGHTS ARE DIM.
Step 1. Check trailer cable to be sure there are no damaged or broken wires, or corrosion on contacts. Check ground
wire on both the trailer and on the towing vehicle.
a. If cable is damaged, refer to unit maintenance.
b. If cable is not damaged, clean all contacts to remove contaminants.
c. Clean and tighten ground connections.
Step 2. Check that correct lamps are installed, and securely seated in their sockets.
a. Replace incorrect lamps with correct type.