Table 1. One or Both Blackout Stoplights Do Not Operate.
TEST OR INSPECTION
One or Both Blackout
Stoplights Do Not Operate
· Always inspect wiring 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 wiring harness connection to
identify the correct wiring harness to replace.
· Tag all wiring harnesses to aid in installation.
· Perform this test only if condition is active.
Test Step 1. Test Operation of
1. Turn battery disconnect switch ON
position (TM 5-3805-298-10).
2. Turn the military light switch to
B.O. Drive position (TM 5-3805-
3. While an assistant presses the
LH Blackout Stoplight Operates and
brake pedal, observe operation of
RH Blackout Stoplight Does Not
both blackout stoplights (TM 5-
Operate Proceed to Test Step 2.
RH Blackout Stoplight Operates and
LH Blackout Stoplight Does Not
Operate Proceed to Test Step 3.
Both Blackout Stoplights Do Not
Operate Proceed to Test Step 4.
Test Step 2. Test for Voltage at RH
1. Turn battery disconnect switch to
OFF position (TM 5-3805-298-10).
2. Remove right rear tail and backup
lamp housing (WP 0272) and
3. Disconnect connector M-C10 and
M-C13 (WP 0012, Figure 158)
from right rear tail light.
4. Turn battery disconnect switch ON
5. Have an assistant press and hold
the brake pedal in (TM 5-3805-