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 435 of 1275

TM9-2350-311 -20-1

CONTINUED FROM STEP L

m

M

1. Reconnect lead 76 of bulkhead-to-driver’s

instrument panel wiring harness to FUEL

PRIMER switch.

2. Disconnect bulkhead-to-driver’s instrument

panel wiring harness from driver’s bulkhead.

3. Place a jumper wire from socket H to pin H

(lead 459).

4. Place red lead of multimeter on pin N (lead

76) and black lead to ground.

5. Turn MASTER switch ON and check for

.

voltage.

6. Turn MASTER switch OFF.

Is voltage present?

Repair or replace lead 76 of bulkhead-

to driver’s Instrument panel wiring

Go to step P.

CONTINUED FROM STEP E

N

1.

2.

3.

4.

5.

Reconnect in-tank fuel pump lead assembly

to relay.

Disconnect lead 10 of in-tank fuel pump lead

assembly from "Y” connector.

Place red lead of multimeter on “Y” connector

and black lead to ground.

Turn MASTER switch ON and check for

voltage.

Turn MASTER switch OFF.

I Is voltage present?

1

I Repair or replace lead 10 of in-tank fuel

I

I

I pump lead assembly (para 8-73). I I

I

1

CONTINUED ON NEXT PAGE

3-335

harness (para 8-50).