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 375 of 1275

CONTINUED FROM STEP B

C

1. Reconnect portable instrument panel wiring

harness to portable instrument panel

disconnect.

2. Disconnect lead 40 of bulkhead-to-portable

instrument panel wiring harness from “Y”

connector.

3. Place red lead of multimeters on “Y” connector

and black lead to ground.

4. Turn MASTER switch ON, instrument panel

light switch on, and check for voltage.

5. Turn MASTER and instrument panel light

switches OFF.

Is voltage present?

Repair or replace lead 40 of bulkhead-to-

portable instrument panel wiring harness

(para 8-49).

3-275

TM 9-2350-311-20-1