TM 5-2420-231-23-1
0042
Table 1. Brake Lights Do Not Function Correctly - Continued.
042
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Disconnect left taillight (WP 0007,
Brake Lights Do Not
Figure 93) from rear lights wiring
Function Correctly -
harness connector (WP 0007, Fig-
Continued
ure 92).
3. Disconnect right taillight (WP
0007, Figure 95) from rear lights
wiring harness connector (WP
0007, Figure 94).
4. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
5. Have an assistant depress brake
pedal (TM 5-2420-231-10).
6. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Proceed to
sure voltage between rear lights
step 6.
wiring harness connector (WP
Voltage Less Than 10 Volts - Proceed
0007, Figure 92) terminals 4 and 7
to Test Step 5.
(ground). Voltage should be 10 to
14 volts.
7. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Replace right
sure voltage between rear lights
and left taillight assembly (WP 0192).
wiring harness (WP 0007, Figure
Voltage Less Than 10 Volts - Proceed
94) terminals 4 and 7 (ground).
to Test Step 5.
Voltage should be 10 to 14 volts.
Test Step 5. Check Adjustment of
Brake Light Switch.
Check adjustment of brake light switch
Brake Light Switch Adjusted -
(WP 0166).
Proceed to Test Step 6.
Brake Light Switch Not Adjusted
Properly - Adjust brake light switch
(WP 0166).
Proceed to Test Step 11.
Test Step 6. Check for Faulty Brake
Light Switch.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove two screws (Figure 2,
Item 4), lockwashers (Figure 2,
Item 3), and front console wiring
harness connector (Figure 2,
Item 2) from brake light switch
(Figure 2, Item 1). Discard lock-
washers.
0042-4
