TM 9-2330-205-14&P
ORGANIZATIONAL TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
1. ONE OR MORE LAMPS FAIL TO LIGHT.
Check lamps.
Step 1.
Remove and replace as required:
Blackout light (page 4-17).
Composite light (page 4-20).
Service taillight (page 4-19).
Check for continuity between edge of lamp socket and light assembly
Step 2.
housing and center post of lamp socket and related light assembly
plug connector.
If no continuity exists, replace light assembly:
Blackout light (page 4-17).
Composite light (page 4-20).
Service taillight (page 4-19).
Check continuity between edge of lamp socket and trailer frame.
Step 3.
If no continuity exists, clean mating surfaces.
Disconnect main harness from intervehicular cable. Have assistant
Step 4.
operate lights while you check voltage in affected lines of inter-
vehicular cable.
If 24 volts are present in all affected lines, replace main harness
Disconnect intervehicular cable from towing vehicle receptacle. Have
Step 5.
assistant operate lights while you check voltage at receptacle.
If 24 volts are present at receptacle, replace cable.
If 24 volts are not present at receptacle, check TM for towing
vehicle.
2. LAMPS DIM OR FLICKERING.
Step 1.
Check continuity between intervehicular cable pin D and ground wire
eyelet end.
If no continuity exists, replace cable.
