TM 5-3805-298-23-2
0134
Table 1. One or Both Front Work Lights Do Not Operate - Continued.
0134
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 5. Test for Faulty Front
One or Both Front Work
Work Light Relay.
Lights Do Not Operate -
1. Swap front work light relay
Continued
(WP 0290) with defroster relay
(WP 0364).
2. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-298-10).
3. Observe operation of front work
Front Work Lights Operate Swap
lights (TM 5-3805-298-10).
front work light relay back to defroster
relay position and replace front work
light relay (WP 0290).
Proceed to Test Step 31.
Front Work Lights Do Not Operate
Proceed to Test Step 6.
Test Step 6. Test for Voltage at Front
Work Light Relay.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove front work light relay
(WP 0290).
3. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-298-10).
4. Using digital multimeter
Voltage 18 to 24 V Proceed to step 5.
(WP 0174), test for voltage
Voltage Less Than 18 V Replace
between connector C-C67
lower cab wiring harness (WP 0291).
(WP 0012, Figure 181) terminal 1
Proceed to Test Step 31.
and terminal 5 (ground).
5. Using digital multimeter
Voltage 18 to 24 V Proceed to Test
(WP 0174), test for voltage
Step 7.
between connector C-C67
Voltage Less Than 18 V Proceed to
(WP 0012, Figure 181) terminal 2
Test Step 10.
and terminal 5 (ground).
Test Step 7. Test for Voltage at Work
Light Jumper Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Install front work light relay
(WP 0290).
3. Disconnect connector FE-C1
(WP 0012, Figure 177) from
connector FG-C1 (WP 0012,
Figure 178).
0134-4
