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
?
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