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 291 of 1275

TM 9-2350-311 -20-1

CONTINUED FROM STEP A

B

1. Reconnect lead 352A to COOLANT indicator

light.

2. Disconnect battery ground leads.

3. Disconnect portable instrument panel wiring

harness from portable instrument panel

bracket.

4. Place jumper wires from pin A to socket A

(lead 27), from socket P (lead 4596) to

socket C (459), and from pin G (lead 352A)

to ground.

5. Reconnect battery ground leads.

6. Turn MASTER switch ON and press

COOLANT indicator light.

7. Turn MASTER switch OFF.

Does COOLANT indicator light operate?

Repair or replace lead 352A of

portable instrument panel wiring

harness (para 8-57).

1. Reconnect portable instrument panel wiring

harness to portable instrument panel

disconnect.

2. Disconnect battery ground leads.

3. Disconnect bulkhead-to-portable instrument

panel wiring harness from driver’s bulkhead.

4. Place jumper wires from pin B to socket B

(lead 400-459B) and from pin M (lead 352A)

to ground.

5. Reconnect battery ground leads.

6. Turn MASTER switch ON and press

COOLANT indicator light.

7. Turn MASTER switch OFF.

Does

COOLANT

indicator light operate?

Repair or replace lead 352A of

bulkhead-to-portable instrument

panel wiring harness (para 8-49).

I

CONTINUED ON NEXT PAGE

3-191