TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
Table 3-1. (ARMY) Troubleshooting (Trailer) - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
LIGHTS DON'T WORK. (Continued)
Step 3.
Visually and manually check wiring harness for loose or corroded connections, or damaged cable.
a. Tighten loose connections.
b. Clean corroded connections.
c. If cable is damaged, refer to unit maintenance.
Step 4.
Visually check ground connection to 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.
2.
LIGHTS OPERATE INTERMITTENTLY.
Step 1.
Visually and manually check cable assembly connectors and towing vehicle mating receptacle
connections for proper contact.
Tighten all connectors to ensure proper contact.
Step 2.
Visually check all contacts for contaminants such as oil, water, dirt, corrosion.
Clean all connectors to remove corrosion and contaminants.
Step 3.
Visually check entire cable assembly for partially severed cable.
If cable is damaged, refer to unit maintenance.
Step 4.
Check that ground wires on trailer and towing vehicle are making proper contact.
Clean ground wire connections and secure tightly as necessary.
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