TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 428 of 1275
TM 92350-311 -20-1 3-3 TROUBLESHOOTING CHART — CONTINUED ae. ELECTRIC FUEL PUMP CIRCUIT — CONTINUED ENGINE MISSES WHEN LOW ON FUEL; ONE OR BOTH FUEL PUMPS FAIL TO OPERATE — CONTINUED CONTINUED FROM STEP C D 1. Reconnect bulkhead-to-portable instrument panel wiring harness to driver's bulkhead. 2. Disconnect battery ground leads. 3. Disconnect driver’s bulkhead-to-master relay wiring harness from engine disconnect bracket. 4. Place red lead of multimeter in socket B (lead 76B) and black lead to ground. 5. Reconnect battery ground leads. 6. Turn MASTER switch ON and check for voltage. 7. Turn MASTER switch OFF. I Is voltage present? I Repair or replace lead 76B of driver's bulkhead- to-master relay wiring harness (para 8-45, M109A2/M109A3; 8-46, M109A4/M109A5). 1 I Repair or replace lead 76B of powerplant I wiring harness (para 8-43, M109A2/ M109A3; 8-44, M109A4/M109A5). 3-328