TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 144 of 1275
TM 9-2350-311-20-1 3-3 TROUBLESHOOTING CHART — CONTINUED d. STARTER MOTOR CIRCUIT (M109A4/M109A5) — (1) ENGINE DOES NOT CRANK; ALL ELECTRICAL CONTINUED ACCESSORIES OPERATE — CONTINUED CONTINUED FROM STEP F 1. Place red lead of multimeter in socket B (lead 400-4595) and black lead to ground. 2. Turn MASTER switch ON and check for voltage. 3. Turn MASTER switch OFF. Is voltage present? Repair or replace lead 14B of driver’s bulkhead-to-master relay wiring harness (para 8-46). H 1. Reconnect connector to starter protection relay. 2. Disconnect driver’s bulkhead-to-master relay wiring harness from voltage regulator. 3. Place a jumper wire from pin A (lead 2) to socket A (lead 2). 4. Place red lead of multimeter on pin B (lead 400-459B) and black lead to ground. 5. Turn MASTER switch ON and check for voltage. 6. Turn MASTER switch OFF. Is voltage present? Repair or replace lead 400-459B CONTINUED ON NEXT PAGE 3-44 of driver's bulkhead-to-master relay wiring harness (para 8-46).