Table 1. Cab Electrical Troubleshooting Procedures - Continued.
TEST OR INSPECTION
21. One or Both Middle
3. Turn battery disconnect switch
One or Both Middle Flood Lamps
Flood Lamps Do Not
and ignition switch to the ON posi-
Do Not Operate - Repeat trouble-
Operate, Front and Rear
tion, turn control indicator switch
shooting from the beginning.
Flood Lamps Operate
to SER. DRIVE position, and turn
Both Middle Flood Lamps Operate -
Normally - Continued
work light switch to front work
lights position (TM 5-3805-293-
N OT E
22. One Or Both Rear Flood
Lamps Do Not Operate,
Always inspect the harness connectorsthat are involved in the circuit.
Both Front and Middle
Poor connections can often be the cause of a problem in an electrical
Flood Lamps Operate
circuit. Verify that all connections in the circuit are clean and secure,
and that all connections are in good condition. If a problem with a
connection is found, correct the problem and verify that this diagnostic
code is Active before performing this procedure.
Perform open or short circuit test ateach harness connection to identify
correct harness to replace.
Perform this test only if condition is active.
Test Step 1. Verify Rear Flood Lamp
1. Turn battery disconnect switch to
the ON position (TM 5-3805-293-
2. Turn control indicator switch to
position SER. DRIVE (TM 5-
3. Turn work light switch to rear work
lights (TM 5-3805-293-10).
Right Rear Flood Lamp Only Does
4. Visually inspect right rear flood
Not Turn On - Proceed to Test Step 2.
lamp or left rear flood lamp or
both rear flood lamps do not oper-
Left Rear Flood Lamp Only Does
Not Turn On - Proceed to Test Step 3.
Both Rear Flood Lamps Do Not
Turn On - Proceed to Test Step 4.
Test Step 2. Test Power Supply and
Ground Circuit To Right Rear Flood
1. Remove right rear flood lamp bulb
2. Visually inspect bulb for discolor-
Bulb Discolored Or Filament Is
ation, and bulb filament for an
Open - Replace right rear flood lamp
bulb (WP 0207).
Proceed to step 10.
Bulb Visual Inspection OK - Pro-
ceed to step 3.