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 o. ENGINE WATER TEMP INDICATOR CIRCUIT — (2) ENGINE LOW LEVEL COOLANT LIGHT FAILS TO CONTINUED LIGHT WHEN PRESSED-TO-TEST; ALL OTHER LIGHTS OPERATE — CONTINUED CONTINUED FROM STEP C I 1. Reconnect bulkhead-to-portable instrument panel wiring harness to driver's bulkhead. ‘ 2. Disconnect engine disconnect bracket-to- bulkhead wiring harness at engine disconnect bracket. 3. Place a jumper wire from socket G (lead 352A) to ground. 4. Turn MASTER switch ON and press COOLANT indicator light. 5. Turn MASTER switch OFF. Does COOLANT indicator light operate? Repair or replace lead 352A of engine disconnect bracket-to-bulkhead wiring harness (para 8-45, M109A2/M109A3; 8-46, M109A4/M109A5). CONTINUED ON NEXT PAGE 3-192