TM 9-2330-235-14&P
Table 4-2. Organizational Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
1.
ALL LAMPS DO NOT LIGHT.
WARNING
When troubleshooting an electrical malfunction, ALWAYS disconnect Intervehicular cable
from towing vehicle. Failure to do so may result In injury or death due to electric shock.
NOTE
Refer to paragraph 4-16 to determine routing of electrical wires and location of electrical
components.
Step 1. Check operation of light switch in towing vehicle.
Replace defective light switch. Refer to towing vehicle technical manual.
Step 2. Check circuit breakers and fuses in towing vehicle.
Reset circuit breakers and replace bad fuses. Refer to towing vehicle technical manual.
Step 3. Check chassis wiring harness for broken insulation or contacts causing short circuits.
Replace chassis wiring harness (para 4-12 or 4-13).
Step 4. Replace intervehicular cable (para 4-14 or 4-15).
2.
DIM OR FLICKERING LAMPS.
WARNING
When troubleshooting an electrical malfunction, ALWAYS disconnect Intervehicular cable from
towing vehicle. Failure to do so may result In Injury or death due to electric shock.
NOTE
Refer to paragraph 4-16 to determine routing of electrical wires and location of electrical components.
Step 1. Check Intervehicular cable, chassis wiring harness, and lights for loose, dirty, or corroded connectors.
Clean dirty connectors (para 3-6). Connect all cables.
Replace intervehicular cable (para 4-14 or 4-15), chassis wiring harness (para 4-12 or 4-13), or affected
lights (para 4-10 or 4-11).
Step 2. Check intervehicular cable for proper grounding.
Remove screw and washer securing ground terminal to connector clip assembly (para 414 or 415). Clean
ground terminal and surface of connector clip assembly. Using screw and washer, connect ground terminal
securely to connector clip assembly.
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