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 m. ALTERNATOR CIRCUIT (M109A2/M109A3) — ALTERNATOR FAILS TO CHARGE BATTERIES; GAGE CONTINUED INDICATION: NOT CHARGING, UNSTEADY OR INACCURATE READING — CONTINUED CONTINUED FROM STEP C 1. Reconnect lead 27 to circuit breaker output. 2. Disconnect battery ground leads. 3. Disconnect portable instrument panel wiring harness from portable instrument panel disconnect. 4. Place a jumper wire from socket C (lead 459) to socket P (lead 459B). 5. Place red lead of multimeters in socket A (lead 27) and black lead to ground. 6. Reconnect battery ground leads. 7. Turn MASTER switch ON and check for voltage. 8. Turn MASTER switch OFF. Is voltage present? Repair or replace lead 27 of driver’s bulkhead-to-portable instrument panel wiring harness (para 8-49). Repair or replace lead 40A of portable instrument panel wiring harness (para 8-57). 3-158