TM 9-2330-386-14&P
ORGANIZATIONAL TROUBLESHOOTING TABLE
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
WARNING
Disconnect electrical power source before performing any
troubleshooting on wiring harness, connectors or lights.
1. ALL LIGHTS DO NOT LIGHT.
Check setting of light switch on towing vehicle. (See operator's
S t e p 1.
manual for towing vehicle).
a. Set light switch properly.
b. If light switch is set properly, go to step 2.
S t e p 2.
Check intervehicular cable receptacles for proper connections.
a. Pull plug out and reinsert fully.
S t e p 3.
( S e e maintenance manual for towing vehicle.)
a. If circuit breaker is open, reset circuit breaker.
b. If fuse is blown, replace fuse.
step 4.
Check wiring for bare spots in insulation.
S t e p 4.
b. If wiring is not defective, go to step 5.
Remove nose plate (para. 4-23) and check for loose or broken ground
S t e p 5.
wires.
Repair ground wire or tighten connection. Install nose plate.
2. ONE OR MORE LIGHTS WILL NOT LIGHT.
Check setting of light switch on nose plate.
S t e p 1.
a. Set light switch properly.
b. If light switch is set properly, go to step 2.
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