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 393 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP A

B

1. Install HEATER indicator lamp.

2. Remove accessory control box cover (para

8-20).

3. Disconnect lead 400L from HEATER

indicator lamp assembly.

4. Place red lead of multimeters on lead 407L

and black lead to ground.

5. Turn MASTER switch ON, HEAT

SELECTOR switch to LOW, and check for

voltage.

6. Place red lead of multimeters on lead 400L

and black lead to ground.

7. Turn MASTER switch ON, HEAT

SELECTOR switch to LOW and check for

voltage.

8. Turn MASTER and HEAT SELECTOR

switches OFF.

Is voltage present?

Replace HEATER indicator

lamp assembly (para 8-20).

I

Repair or replace lead 407L and/or

END OF TASK

3-293

wiring harness (para 8-53).