Table 4. Electrical System Troubleshooting Procedures - Continued.

TM 9-2320-312-24-1

TROUBLESHOOTING PROCEDURES - CONTINUED

0006 00

Table 4. Electrical System Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

LIGHT SYSTEMS - CONTINUED

Repair or replace damaged or

5. Marker Lights and Taillights Inoperative -

5. Use multimeter to check

wires and connectors between

corroded wires and connectors

Continued.

components of marker and

(WP 0120 00).

taillight circuit.

Reset circuit breaker.

6. Strobe Warning Light Inoperative.

1. Ensure "BEACON LIGHT"

15A circuit breaker is not

tripped.

2. Remove strobe warning light

Replace failed lamp (WP 0109

cover and check lamp.

00).

Replace failed switch (WP 0093

3. Use multimeter to check

operation of strobe warning

00).

light switch.

Replace failed circuit breaker

4. Use multimeter to check

"BEACON LIGHT" 15A

(WP 0095 00).

circuit breaker.

If multimeter indicates no

5. Use multimeter to check for

12 Vdc between 15A circuit

voltage, inspect and repair wire

breaker and strobe warning

and connectors between circuit

light switch.

breaker and switch (WP 0120

00).

a. If multimeter indicates no

6. Use multimeter to check for

voltage, inspect and repair

12 Vdc between strobe

wire and connectors

warning light switch and

between switch and light

strobe warning light unit.

(WP 0120 00).

b. If multimeter indicates 12

Vdc,

replace

strobe

warning light (WP 0109

00).

Reconnect cable.

7. Trailer Lights Inoperative (12-Volt Trailer).

1. Ensure tractor-to-trailer 12-

volt cable is properly

connected (TM 9-2320-312-

10).

a. Clean cable connections

2. Inspect 12-volt cable and

as required.

receptacles for bent or

corroded pins.

b. Repair bent or damaged

pins (WP 0120 00).

0006 00-14