TM 5-2420-231-23-1
0042
Table 1. Brake Lights Do Not Function Correctly - Continued.
042
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Check for Faulty Left
Brake Lights Do Not
Taillight.
Function Correctly -
Continued
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect left taillight (WP 0007,
Figure 93) terminals 4 and 7 from
rear lights wiring harness connec-
tor (WP 0007, Figure 92) terminals
4 and 7.
3. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
4. Have an assistant depress brake
pedal (TM 5-2420-231-10).
5. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Replace left
sure voltage between rear lights
taillight assembly (WP 0192).
wiring harness connector (WP
Proceed to Test Step 11.
0007, Figure 92) terminals 4 and 7
Voltage Less Than 10 Volts - Replace
(ground). Voltage should be 10 to
rear lights wiring harness (WP 0184).
14 volts.
Proceed to Test Step 11.
Test Step 3. Check for Faulty Right
Taillight.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect right taillight (WP
0007, Figure 95) from rear lights
wiring harness connector (WP
0007, Figure 94).
3. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
4. Have an assistant depress brake
pedal (TM 5-2420-231-10).
5. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Replace right
sure voltage between rear lights
taillight assembly (WP 0192).
wiring harness connector (WP
Proceed to Test Step 11.
0007, Figure 94) terminals 4 and 7
Voltage Less Than 10 Volts - Replace
(ground). Voltage should be 10 to
rear lights wiring harness (WP 0184).
14 volts.
Proceed to Test Step 11.
Test Step 4. Check for Faulty
Taillights.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
0042-3
