TM9-2330-374-14&P
T a b l e 4-2.
Organizational
Troubleshooting
Table
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM (See schematics as follows:)
Figure Number
4-18 Chassis
wiring diagram
12 volt
body wiring diagram
4-19
4-20
24 volt
body wiring diagram
110 volt
AC body
4-21
1.
12 or 24 VOLT LAMPS DO NOT LIGHT.
Step 1.
Check intervehicular cable receptacles for proper connections.
Pull plug out and reinsert fully.
If receptacles not defective, go to step 2.
Step 2.
Check setting of light switch on towing vehicle.
Set light switch properly.
If light switch is set properly, go to step 3.
Step 3.
Check circuit breaker on towing vehicle.
If circuit breaker open, reset circuit breaker.
If circuit breaker not open, go to step 4.
Step 4.
Check wiring for bare spots in insulation.
Repair wiring if defective (para. 4-25).
If wiring not defective, go to step 5.
Step 5.
Check ground connector for loose or broken connections.
Repair or tighten ground connector (para. 4-28).
2.
ONE OR MORE LAMPS ON CHASSIS OR BODY WILL NOT LIGHT.
Step 1.
C h e c k for burned out lamp.
Replace lamp if defective (paras. 4-17 through 4-21).
If lamp does not light, go to step 2.
Step 2.
Check for broken or shorted wire in cable or loose connection in plug
or receptacle.
Tighten, repair or replace as necessary (para. 4-25).
If wiring and connections not damaged, go to step 3.
Step 3.
C h e c k for damaged light assembly.
Replace light assembly, if damaged (paras. 4-17 through 4-21).
I f light assembly is not damaged, go to step 4.
