TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT1 &SD
TEsT om,elAGNOSW
FLOWCHART
I
r KNOWN INFO
I
TRY IT.
WIRING OK
POSSIBLE PROBLEMS’
GAUGE
SENDING UNIT
L
KNOWN INFO
WIRING OK
POSSIBLE PROBLEMS
GAUGE
SENDING UNIT
RECONNECT WIRES 27G AND 33A
AT THE TEMPERATURE GAUGE.
WITH THE ROTARY SWITCH IN
THE RUN POSITION, DOES
THE GAUGE READ OFF SCALE
BELOW 120°F (49”C)?
REASON FOR QUESTlON
This will determine if the
gauge can respond to an
input signal.
1 TEST OPTIONS
WITH THE ROTARY SWITCH IN
THE RUN POSITION, SHORT WIRE
338 TO ENGINE GROUND. DOES
THE GAUGE READ OFF SCALE
ABOVE 240°F (116” C)?
TRY IT.
REASON FOR OUESllON
Thii will determine if the
gauge can respond to an
input signal.
TEMPERATURE
2-348
