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 156 of 1275

TM9-2350-311-20-1

3-3 TROUBLESHOOTING CHART —

CONTINUED

d. STARTER MOTOR CIRCUIT (M109A4/M109A5) —

(3) ENGINE CRANKS FOR SHORT TIME ONLY;

CONTINUED

BATTERY POWER LEVEL IS CORRECT —

CONTINUED

CONTINUED FROM STEP A

2.

3.

4.

Reconnect driver’s bulkhead-to-master

relay wiring harness to starter protection

relay.

With powerplant wiring harness still

disconnected from inline connector,

disconnect wiring harness from alternator.

Place red lead of multimeter in socket E

(lead 503) at alternator and black lead in

lead 503 connector.

Check for continuity.

Is continuity present?

Repair or replace lead 503 of

powerplant wiring harness (para 8-44).

,

Replace starter protection relay box

(para 8-31).

END OF TASK

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