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 215 of 346

TM 9-2350-261-20-1

BLACKOUT DRIVE LIGHT DOES NOT WORK — Continued

0030 00

3Y

1.

Install front main harness plug on BO DRIVE light.

2.

Remove instrument panel for access (WP 0238 00).

3.

Remove front main harness circuit 19 (1) and 520 (2) from

IR/BO selector jacks (3) and (4).

4.

Measure resistance between IR/BO selector jacks (3)

and (4) with selector on BO.

5.

Does multimeter read 0 ohms?

3YN

1.

Install harness front main harness

plug on BO DRIVE light.

2.

Replace IR/BO selector switch

(WP 0241 00).

3.

Verify no faults found.

4Y

1.

Remove front main harness plug (1) from lighting

control switch jack (2).

2.

Turn lighting control switch to BO DRIVE.

3.

Measure resistance between lighting control switch jack

(2)pinsD(3)andF(4)

.

4.

Does multimeter read 0 ohms?

4YN

1.

Install front main harness plug on

IR/BO selector switch jacks.

2.

Replace lighting control switch

(WP 0242 00).

3.

Verify no faults found.

003000-2