TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 209 of 828
TM 9–2350–311–20–2 3–97 h. CAB LIGHTING SYSTEM — CONTINUED (5) ALL CAB LIGHTS ARE OUT. INITIAL SETUP Test Equipment Multimeter (item 6, Appx H) Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Equipment Condition Vehicle MASTER switch to OFF (TM 9–2350–311–10) CAB POWER switch to OFF (TM 9–2350–311–10) Repair or replace wire 138/147 (para 8–7). 1. Turn MASTER and CAB POWER switches to OFF. 2. Disconnect harness from J2 connector at gunner’s selector switch box assembly. 3. Place one multimeter lead in quick-disconnect of wire 138/147 socket and other lead to socket F of J2 connector harness. 4. Check for continuity. Is continuity present? Repair wire 138/147 from quick-disconnect to dome light assemblies (para 8–2). 1. Disconnect wire 138/147 from quick-disconnect at gunner’s selector switch box assembly. 2. Turn MASTER and CAB POWER switches to ON. 3. Place red multimeter lead in wire 138/147 quick-disconnect leading to gunner’s selector switch box assembly and black lead to ground. 4. Check for voltage. Is battery voltage present? yes no A yes no CONTINUED ON NEXT PAGE B GUNNER’S SELECTOR SWITCH BOX J2 CONNECTOR HARNESS SOCKET F WIRE 138/147 – + – + WIRE 138/147