TM 5-2420-231-23-1
0045
Table 1. Rear Taillights and/or Blackout Marker Lights Do Not Function Correctly - Continued.
045
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Disconnect front lights wiring har-
Rear Taillights and/or
ness connector (WP 0007, Figure
Blackout Marker Lights Do
64) from main chassis wiring har-
Not Function Correctly -
ness connector (WP 0007, Figure
Continued
65) (WP 0183).
7. Using a digital multimeter, test for
Continuity - Proceed to step 8.
continuity between front main
No Continuity - Replace front lights
chassis wiring harness connector
wiring harness (WP 0183).
(WP 0007, Figure 6) 6A and
Install new signal lights fuse (TM 5-
machine ground. There should be
2420-231-10).
no continuity.
Proceed to Test Step 21.
8. Remove left rear floor cover plate
(WP 0306).
9. Disconnect main chassis wiring
harness connector (WP 0007, Fig-
ure 87) from rear lights wiring har-
ness connector (WP 0007, Figure
86) (WP 0184).
10. Using a digital multimeter, test for
Continuity - Replace rear lights wiring
harness (WP 0184).
continuity between front main
Install new signal lights fuse (TM 5-
chassis wiring harness connector
2420-231-10).
(WP 0007, Figure 6) 6A and
Proceed to Test Step 21.
machine ground. There should be
No Continuity - Replace main chassis
no continuity.
wiring harness (WP 0154).
Install new signal lights fuse (TM 5-
2420-231-10).
Proceed to Test Step 21.
Test Step 21. Verify That Symptom Is
Resolved.
1. Ensure that all wiring harness con-
nectors are connected.
2. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
3. Ensure that light control switch is
in the B.O. MARKER position (TM
5-2420-231-10).
4. Observe rear blackout lights and
Both Rear Blackout Lights On and
Both Marker Lights On - Proceed to
front marker lights (TM 5-2420-
step 5.
231-10).
One or Both Rear Blackout Lights Off
and/or One or Both Marker Lights Off
- Repeat troubleshooting from the
beginning.
5. Have an assistant depress and
hold down brake pedal (TM 5-
2420-231-10).
0045-16