TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
22. One Or Both Rear Flood
13. Visually inspect right rear flood
Right Rear Flood Lamp Does Not
Lamps Do Not Operate,
lamp and verify flood lamp turns
Turn On - Repeat troubleshooting
Both Front and Middle
on.
from beginning.
Flood Lamps Operate
Right Rear Flood Lamp Turns On -
Normally - Continued
Troubleshooting complete.
Test Step 3. Test Power Supply and
Ground Circuit To Left Rear Flood
Lamp.
1. Remove left rear flood lamp bulb
(WP 0207).
2. Visually inspect flood lamp bulb
Bulb Discolored Or Filament Is
Open - Replace left rear flood lamp
for discoloration, and bulb fila-
bulb (WP 0207).
ment for an open.
Bulb Visual Inspection OK - Pro-
ceed to step 3.
3. Disconnect rear lamps harness
connector AG-C2 (WP 0009, Fig-
ure 312) from right rear flood lamp
(WP 0178).
4. Using digital multimeter, test for
Voltage 18 to 26 Volts - Proceed to
voltage between harness connec-
step 5.
tor AG-C2 (WP 0009, Figure 312)
Voltage Less Than 18 Volts -
terminal 1 and terminal 2.
Replace rear lamps wiring harness
Voltage should be 18 to 26 volts.
(WP 0178).
Proceed to step 10.
5. Remove left rear flood lamp lens
from flood lamp assembly (WP
0207).
6. Disconnect lens harness connec-
tor (WP 0009, Figure 405) from
lens.
7. Disconnect bulb connector (WP
0009, Figure 405) from lamp
assembly connector (WP 0009,
Figure 405).
8. Using digital multimeter, test for
Resistance 5.0 Ohms Or Less - Pro-
continuity between flood lamp
ceed to step 9.
assembly (WP 0009, Figure 406)
Resistance More Than 5.0 Ohms -
terminal 2 and lens harness con-
Replace left rear flood lamp assembly
nector (WP 0009, Figure 405).
(WP 0207).
Resistance should be less than
Proceed to step 10.
5.0 ohms.
0023-138