TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 424 of 1205

TM

9-2320-387-24-l

INSTRUMENTS CIRCUIT

KNOWN INFO

WIRE 27C OK

WIRE 27D OK

CIRCUIT BREAKER

1 OK

POSSIBLE

PROBLEMS

WIRE 400D

SWITCH

DIAGNOSTIC

FLOWCHART

TEST OPTIONS

IS THERE CONTINUITY

FROM

WIRE 400D AT THE HEATER

MOTOR TO WIRE 400D AT THE

HEATER FAN SWITCH?

1. STEXE-R

TEST

91

(Page 2-508)

2. MULTIMETER

REASON

FOR QUESTION

Continuity

indicates that the wiring

is

OK,

and the switch must be the

REPAIR/REPLACE

WIRE 400D. RETURN

REPLACE THE HEATER FAN

SWITCH. RECONNECT ALL WIRES.

RETURN TO P4, PAGE 2-364.

1

2-370