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 238 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

k. MASTER WARNING LIGHT (PORTABLE

(1) MASTER WARNING LIGHT FAILS TO OPERATE

INSTRUMENT PANEL) CIRCUIT — CONTINUED

WITH MASTER SWITCH ON AND ENGINE OFF —

CONTINUED

harness (para 8-57).

Repair or replace lead 27/509 of

portable instrument panel wrong

CONTINUED ON NEXT PAGE

light (para 8-17).

3-138