TM-9-2350-261-20-1

CARRIER, M113A2, M577A2, M1064, M1068, M1059 AND M901A1

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL - VOLUME 1 OF 4

TM-9-2350-261-20-1 - Page 225 of 346

TM 9-2350-261-20-1

INFRARED HEADLIGHT(S) DOES NOT OPERATE — Continued

0032 00

5Y

1. Installdimmerswitchandfrontmainwiringharness

plug on dimmer switch.

2.

Install front main wiring harness circuit 514/515 plug on

IR/BO selector switch jack.

3.

Remove front main harness plug (1) from lighting

control switch jack (2).

4.

Measure resistance between front main wiring harness

lighting control switch plug (1) pin D (3) and IR/BO

selector circuit 520 plug (4).

5.

Does multimeter read 0 ohms?

5YN

1.

Repair front main wiring harness

circuit 520 (WP 0312 00).

2.

Verify no faults found.

6Y

1.

Install circuit 520 plug on IR/BO selector switch.

2.

Replace lighting control switch (WP 0242 00).

3.

Verify no faults found.

003200-4