TM -9-2330-373-14 & P
Table 3-1. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
WARNING
Make sure all electrical power is disconnected before performing any maintenance on the
electrical system.
1. ALL LAMPS FAIL TO LIGHT.
Step 1.
Check light switch on towing vehicle.
Place light switch on towing vehicle in proper mode of operation. If
towing vehicle lamps light, but semitrailer lights do not, proceed to
Step 2.
Step 2.
Check to see that inter-
vehicular cable (1) is
properly plugged into
receptacle.
Pull intervehicular cable plug
out of receptacle and insert
properly.
Step 3.
Inspect for dirty or
corroded terminals (2) on
intervehicular cable (1).
and plug.
TA 314734
3-9