TM 5-3805-296-23-2
0141
Table 1. All Lights, Horn, and Backup Alarm Fail To Operate Continued.
0141
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 28. Test Main Cab Wiring
All Lights, Horn, and Backup
Harness.
Alarm Fail To Operate
1. Disconnect connector CG-C1
Continued
(WP 0012, Figure 283) from
connector W-C8
(WP 0012, Figure 282).
2. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C8
Proceed to Test Step 43.
terminal 18 (WP 0012,
No Continuity Proceed to step 3.
Figure 282) and ground.
3. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C8
Proceed to Test Step 43.
terminal 18 (WP 0012,
No Continuity Proceed to step 4.
Figure 282) and all other
terminals in connector W-C8
(WP 0012, Figure 282).
4. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C2
Proceed to Test Step 43.
terminal 7 (WP 0012, Figure 224)
No Continuity Proceed to step 5.
and all other terminals
in connector W-C2
(WP 0012, Figure 224).
5. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 29.
between connector W-C2
Resistance Greater Than 5.0 Ohms
terminal 7 (WP 0012, Figure 224)
Replace main cab wiring harness
and W-C8 terminal 18
(WP 0505).
(WP 0012, Figure 282).
Proceed to Test Step 43.
Test Step 29. Test Headlamp Breaker
and Wiring Harness.
1. Remove fuse panel wiring harness
(WP 0515).
2. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Replace fuse panel wiring harness
between connector CG-T4
(WP 0515).
(Figure 11, Item 1) and connector
Proceed to Test Step 43.
GG-T1 (Figure 11, Item 2).
Resistance Greater Than 5.0 Ohms
Replace headlamp breaker and wiring
assembly (WP 0516).
Proceed to Test Step 43.
0141-24
