TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download

TM 9–2350–311–20–2 3–108 3–3 TROUBLESHOOTING — CONTINUED i. INTERCOMMUNICATION SYSTEM — CONTINUED (3) DRIVER CANNOT COMMUNICATE. — CONTINUED 1. Reconnect cable CX9640 at J505 connector of amplifier AM 1780/VRC. 2. Disconnect wire 141 from contact arm assembly quick-disconnect. 3. Place one multimeter lead in wire 141 quick-disconnect and other lead in socket A of power system wiring harness connector. 4. Check for continuity. Is continuity present? B yes no Repair or replace wire 142 (para 8–15). yes CONTINUED FROM STEP A no C Repair or replace wire 141 (para 8–15). CONTINUED ON NEXT PAGE POWER SYSTEM WIRING HARNESS CONNECTOR SOCKET A + CONTACT ARM ASSEMBLY 1. Reconnect wire 141 at contact arm assembly quick-disconnect. 2. Disconnect wire 142 from contact arm assembly quick-disconnect. 3. Place one multimeter lead in wire 142 quick-disconnect and other lead in socket B of power system wiring harness connector. 4. Check for continuity. Is continuity present? POWER SYSTEM WIRING HARNESS CONNECTOR SOCKET B WIRE 141 WIRE 142 + CONTACT ARM ASSEMBLY A B C D E F G H J K L M N P A B C D E F G H J K L M N P – –