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 138 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

C. STARTER MOTOR CIRCUIT (M109A2/M109A3) —

ENGINE DOES NOT CRANK; ALL ELECTRICAL

CONTINUED

ACCESSORIES OPERATE — CONTINUED

CONTINUED FROM STEP E

Q

1. Reconnect connector to engine disconnect

bracket.

2. Remove powerplant from vehicle

(para 4-3).

3. Connect special equipment for operation of

equipment outside of vehicle (para 4-3).

4. Place red lead of multimeter on lead 14B at

starter solenoid and black lead to ground.

5. Place shift lever in neutral.

6. Turn MASTER switch ON, push STARTER

switch, and check for voltage.

7. Turn MASTER switch OFF.

Is voltage present?

Repair or replace lead 14B of

powerplant wiring harness (para

8-43).

1. Place red lead of multimeter on lead 82 at

starter solenoid and black lead to gerund.

2. Turn MASTER switch ON and check for

voltage.

3. Turn MASTER switch OFF.

Is voltage present?

I

Replace starter motor (para 8-14).

m

Repair or replace lead 82 of powerplant

wiring harness (para 8-43).

END OF TASK

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