C With MASTER switch ON, disconnect wire 459B from MASTER switch
(bottom plug). Place red mulitimeter lead in wire 459B, ground black lead and
check for voltage. If voltage is present, replace MASTER switch (p 6-21).
If no voltage, repair or replace wire 459B-400.
D
NOTE
To trace circuit 459B-400, check wiring harnesses
12268100 (p 6-68), 12260287 (p 6-84) and 12260298 (p
6-89).
Reconnect all wires and check wire 81 for breaks, cuts and corroded
terminals. Replace if neccesary (p 6-68). Disconnect wire 82 from master
relay. Place red multimeter lead in master relay and ground black lead. Check
voltage. If no voltage is present, replace master relay (p 6-45). If voltage is
present repair or replace wire 82 (Appx F).
2-65
Change 4
TM 9-2360-267-20
