TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 295 of 1275

TM 9-2350-311 -20-1

CONTINUED FROM STEP H

I

n

Repair or replace lead 27 of bulkhead-

to-portable instrument panel wiring

harness (para 8-49).

Repair or replace lead 27 of portable

instrument panel wiring harness (para

8-57).

CONTINUED FROM STEP G

1. Reconnect lead 27 to circuit breaker output.

2 Disconnect lead 10 from circuit breaker

.

input.

3. Place red lead of multimeter in lead 10 and

black lead to ground.

4. Turn MASTER switch ON and check for

voltage.

5. Turn MASTER switch OFF.

Is voltage present?

Troubleshoot master relay circuit

(para 3-3b).

I

Replace circuit breaker (para 8-33,

M109A2/M109A3; 8-34, M109A4/M109A5).

END OF TASK

3-195