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 400 of 1205
KNOWN INFO
I
TEST OPTIONS
1
POWER AVAIlABLE
TO
THE GAUGES
DISCONNECT WIRE 27G AT THE
1. STEXE-R
TEST 89
TEMPERATURE
GAUGE. WITH THE
(Page 2506)
TEMPERATURE
GAUGE
DOESN’T WORK
ROTARY SWITCH IN THE RUN
2. MULTIMETER
POSITION, DO YOU HAVE
BAlTERY
VOLTAGE AT WIRE 27G?
r
REASON
FOR QUESTION
This is the power wire for
I
’
the gauge.
POSSIBLE
PROBLEMS
GAUGE
SENDING
UNIT
WIRING
TM 9-2320-387-24-l
~_
INSTRUMENTS
CIRCUIT
DIAGNOSTIC
FLOWCHART
I
KNOWN INFO
1 TEMPERATURE
GAUGE
1
HAS POWER
1
POSSIBLE
PROBLEMS
1
I
GAUGE
UNIT
I
KNOWN INFO
GAUGE GROUND
OK
POSSIBLE
PROBLEMS
TEMPERATURE
GAUGE
SENDING
UNIT
WIRING
I2
1
1
TEST OPTIONS
WITH THE ROTARY SWITCH IN
THE OFF POSITION, DO YOU
I
1. STVICE-R
TEST 91
(Page
2-509)
HAVE CONTINUITY BETWEEN
WIRE 58E AT THE GAUGE AND
ENGINE (OR BODY) GROUND?
2. MULTIMETER
REASON
FOR QUESTION
This is the ground wire for
the gauge.
TEST OPTIONS
DISCONNECT WIRE 33A AT THE
I
1. STEIICE-R
TEST 91
(Page 2-509)
GAUGE AND AT THE WIRE 33B AT
THE TEMPERATURE
SENDING
I
2. MULTIMETER
UNIT. DO YOU HAVE CONTINUITY
FROM WIRE 33A TO WIRE 33B?
REASON
FOR QUESTION
I
If
etther of these wires are open,
1 the gauge will always read off
scale to the left.
REPAIR 33A, 33B
OR REPLACE
YES
?
2-346
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