TM 9-2330-238-14
Table 4-2. Organizational
Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
ELECTRICAL SYSTEM
1.
ALL 24-VOLT LAMPS FAIL TO LIGHT
Step 1.
Check to see if towing vehicle service light switch is in ON position.
Place service light switch to ON position.
Step 2.
Check wiring harness for short circuit.
Check cable for bare spots. Repair if necessary.
2.
ONE OR MORE 24-VOLT
LAMPS WILL NOT LIGHT
Step 1.
Check for burned-out
lamp.
Replace
defective
lamp (para 4-26, 4-28, 4-29, 4-30, 4-32, or 4-33).
Step 2.
Check for dirty or corroded
cable contacts
in sleeves or lamp sockets.
Remove lamps and clean contacts.
Step 3.
Check for loose or broken connections.
Tighten, repair, or replace as necessary.
Step 4.
Check to see if light assembly
is defective.
Replace
defective
light assembly
(para 4-26, 4-28, 4-29, 4-30, 4-32, or 4-33).
3.
24-VOLT LAMPS ARE DIM OR FLICKERING.
Step 1.
Check for defective
lamp.
Replace defective
lamp (para 4-26, 4-28, 4-29, 4-30, 4-32, or 4-33).
Step 2.
Check for loose ground connection.
Clean ground cable and tighten connections.
Step 3.
Check for loose, dirty, or corroded
terminals.
Clean and tighten terminals.
Step 4.
Check for dirty or corroded
lamp sockets,
cable connectors,
or harness contacts.
Clean as necessary.
4.
DIRECTIONAL
SIGNAL INOPERATIVE.
Step 1.
Check for defective
flasher or switch in towing vehicle.
Refer to towing vehicle technical
manual and replace defective
part if necessary.
4-9
