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
2. Using digital multimeter
All Lights, Horn, and Backup
Continuity Connect connector H-C7
(WP 0540), test for continuity
Alarm Fail To Operate
to connector W-C2.
between connector H-C9
Continued
Perform diagnostic procedure Dome
terminal J (WP 0012, Figure 242)
Lamp Does Not Operate (WP 0139) to
and ground.
diagnose shorted circuit.
Proceed to Test Step 43.
No Continuity Proceed to step 3.
3. Using digital multimeter
Continuity Connect connector H-C7
(WP 0540), test for continuity
to connector W-C2.
between connector
Perform diagnostic procedure Dome
H-C7 terminal 25
Lamp Does Not Operate (WP 0139) to
(WP 0012, Figure 225) and all
diagnose shorted circuit.
other terminals in connector H-C7
Proceed to Test Step 43.
(WP 0012, Figure 225).
No Continuity Proceed to Test
Step 21.
Test Step 21. Test for Shorted A652
Circuit.
1. Disconnect connector CG-C1
(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-C2
Proceed to Test Step 43.
terminal 25 (WP 0012,
No Continuity Proceed to step 3.
Figure 224) and ground.
3. 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 25 (WP 0012,
No Continuity Proceed to step 4.
Figure 224) and all other terminals
in connector W-C2
(WP 0012, Figure 224).
4. 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 17 (WP 0012,
No Continuity Proceed to Test
Figure 282) and all other terminals
Step 22.
in connector W-C8
(WP 0012, Figure 282).
Test Step 22. Test for Shorted Fuse
Panel Wiring Harness.
1. Using digital multimeter
Continuity Replace fuse panel wiring
(WP 0540), test for continuity
harness (WP 0515).
between connector CG-C1
No Continuity Proceed to step 2.
terminal 17 (WP 0012,
Figure 283) and ground.
0141-19