TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–112 3–3 TROUBLESHOOTING — CONTINUED i. INTERCOMMUNICATION SYSTEM — CONTINUED (3) DRIVER CANNOT COMMUNICATE. — CONTINUED Replace cable CX9640 (TM 9–2350–311–20–1). K yes no CONTINUED ON NEXT PAGE CONTINUED FROM STEP J 1. Reconnect wires 141, 142, and 143 at contact arm assembly quick-disconnects. 2. Disconnect cable CX9640 at driver’s control box. 3. Place one multimeter lead in position 1 and other lead in position 2 for individual continuity checks. POSITION 1 POSITION 2 A H C K B L 4. Check for continuity. Is continuity present? L yes no 1. Reconnect cable CX9640 connector to telephone/intercom wiring harness connector. 2. Place one multimeter lead in pin A of cable CX9640 and other lead to ground. 3. Check for continuity. Is continuity present? Replace cable CX9640. – + POSITION 2 – + – + CABLE CX9640 CONNECTORS POSITION 1 POSITION 1 POSITION 1 POSITION 2 POSITION 2 CABLE CX9640 PIN A – + CABLE CX9640 CONNECTORS CABLE CX9640 CONNECTORS