TM 9-2350-238-20-1
Make sure MASTER switch is OFF before repairing
electrical circuits. Failure to observe this warning
could result in injury to personnel.
Step 7.
Disconnect wiring harness. Place red probe on pin K (lead 459) of
receptacle and ground black probe. Set MASTER switch ON. If
multimeter indicates no voltage, repair lead 459 from MASTER switch to
receptacle. Refer to page 2-371. If multimeter indicates about 24 volts
and problem still exists, troubleshoot master relay circuit, refer to page
2-102; and troubleshoot MASTER indicator warning light circuit, refer to
page 2-171. Set MASTER switch OFF. Connect wiring harness to
receptacle.
2-101