TM 5-3805-296-23-2
0140
Table 1. Blackout Headlamp Does Not Operate.
0140
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Blackout Headlamp Does
Not Operate
Always inspect harness connectors that are involved in the circuit. Poor
connections can often be the cause of a problem in an electrical circuit.
Verify that all connections in the circuit are clean and secure and that all
connections are in good condition. If a problem with the connection is
found, correct the problem and verify that this malfunction or diagnostic
code is active before performing this procedure.
Perform open or short-circuit test at each harness connection to identify
the correct harness to replace.
Tag all wiring harnesses to aid in installation.
Test Step 1. Verify if Other
Malfunctions are Present.
NOTE
If present, diagnose and repair failure of headlight, turn signal, horn, and
backup alarm before diagnosing failure of blackout lights. Failure to follow
this note may result in inaccurate diagnosis.
1. Turn battery disconnect switch to
ON position (TM 5-3805-296-10).
2. Turn mode switch on military light
switch to SER. DRIVE position
(TM 5-3805-296-10).
3. Verify if other lights, horn, and
Other Lights, Horn, and Backup
backup alarm operate
Alarm Operate Proceed to step 4.
(TM 5-3805-296-10).
Other Lights, Horn, and Backup
Alarm Do Not Operate Turn mode
switch on military light switch to OFF
position (TM 5-3805-296-10).
Turn battery disconnect switch to OFF
position (TM 5-3805-296-10).
Perform All Lights, Horn, and Backup
Alarm Fail To Operate (WP 0141).
Proceed to Test Step 14.
NOTE
Do not apply brakes. Failure to follow this note may result in inaccurate
diagnosis.
4. Turn mode switch on military light
switch to B.O. MARKER position
(TM 5-3805-296-10).
5. Observe BO tail lights
One or Both BO Tail Lights Operate
(TM 5-3805-296-10).
Proceed to step 6.
Both BO Tail Lights Do Not Operate
Perform One or Both Blackout Tail
Lights Do Not Operate (WP 0136).
Proceed to Test Step 14.
