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 154 of 1275

TM9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

d. STARTER MOTOR CIRCUIT (M109A4/M109A5) —

(2) COMBAT OVERRIDE SWITCH WILL NOT

CONTINUED

OVERRIDE — CONTINUED

CONTINUED FROM STEP C

1. Disconnect driver’s bulkhead-to-master

relay wiring harness from starter protection

relay.

2. Place red lead of multimeter in socket F

(lead 14C) and black lead in lead 14C at

bulkhead.

3. Check for continuity.

Is continuity present?

Repair or replace lead 14C of driver's

bulkhead-to-master relay wiring

harness (para 8-46).

Replace starter relay box (para 8-31 ).

END OF TASK

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