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 297 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP A

B

1. Reconnect lead 3526 to COOLANT indicator

light.

‘ 2. Disconnect portable instrument panel wiring

harness from portable instrument panel

disconnect.

3. Place jumper wires from pin A to socket A

(lead 27), and from socket P (lead 459B) to

socket C (lead 459).

4. Place a jumper wire from pin N (lead 352B)

to ground.

5. Turn MASTER switch ON and press

COOLANT indicator light.

6. Turn MASTER switch OFF.

Does COOLANT indicator light operate?

portable Instrument panel wrong

Repair or replace lead 352B of

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 P (lead 352B)

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?

m

CONTINUED ON NEXT PAGE

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