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 b. MASTER RELAY CIRCUIT — CONTINUED (1) MASTER SWITCH INDICATOR LIGHT IS LIT – CONTINUED CONTINUED FROM STEP B I 1. Reconnect lead 81 to master relay. 2. Place red lead of multimeter on positive battery post and black lead to ground. 3. Check for voltage. 4. If voltage is below 18 Vdc, clean, tighten, repair, or replace necessary cables. 5. Check for voltage. I I Is voltage above 18 Vdc? Check each battery and replace as required (para 8-28). Repair or replace lead 81 of engine disconnect bracket-to-bulkhead wiring harness (para 8-45, M109A2/M109A3; para 8-46, M109A4/M109A5). END OF TASK 3-22