TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-20-1 3-3 TROUBLESHOOTING CHART — CONTINUED ab. BILGE PUMP CIRCUIT — CONTINUED BILGE PUMP FAILS TO OPERATE — CONTINUED CONTINUED FROM STEP H 2. 3. 4. 5. Reconnect lead 450 to BILGE PUMP switch input. Disconnect lead 450 from circuit breaker output. Place red lead of multimeter in circuit breaker output and black lead to ground. Turn MASTER switch ON and check for voltage. Turn MASTER switch OFF. Is voltage present? Repair or replace lead 450 of driver’s instrument panel wiring harness (para 1. Reconnect lead 450 to circuit breaker output. 2. Disconnect lead 10 from circuit breaker input. 3. Place red lead of multimeter in lead 10 and black lead to ground. 4. Turn MASTER switch ON and check for voltage. 5. Turn MASTER switch OFF. Is voltage present? Replace circuit breaker (para 8-33, M109A2/M109A3; 8-34, M109A4/ M109A5). Troubleshoot master relay circuit (para 3-3b). 3-310