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 242 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

k. MASTER WARNING LIGHT (PORTABLE

(2) MASTER WARNING LIGHT IS LIT; EVERYTHING

INSTRUMENT PANEL) CIRCUIT — CONTINUED

ELSE APPEARS NORMAL — CONTINUED

Repair or replace lead 509 of engine

disconnect bracket-to-bulkhead wiring

harness (para 8-45, M109A2/

M109A3; 8-46, M109A4/M109A5).

Repair or replace lead 509 of

bulkhead-to-portable instrument panel

wiring harness (para 8-49).

END OF TASK

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