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SWITCHES
Run the engine and measure the change
in
resistance
of the
sensor
with the engine at operating temper·
ature.
Temperature
60°C
85°C
(140°
F)
(185°F)
Resistance
104.0
43.9
(Ohms)
Replace
the sensor if it is out
of
specifications by
more than
10%
at any temperature
I
isted.
TEMPERATURE GAUGE
Disconnect
the wire
from the temperature sensor
and short it to
ground
.
Turn
the ignition switch ON.
The
temperature
gauge segments should move all the way to the
right.
CAUTION:
Do not leave the temperature sensor wire
grounded for longer
than a
few seconds or the
temperature
gauge will be damaged.
TACHOMETER
If
the tachometer does not indicate properly, check
and repair
the
No.1 cylinder ignition system.
If
the problem still
appears.
check continuity
between the yellow wire terminal of the wire
harness tachometer coupler and the yellow wire
terminal
of
the
No.
1
cylinder ignition coil and
repair
the circuit
if
necessary.
If
there is continuity, replace the tachometer with
a new
one.
21-10
TACHOMETER
SPARK UNIT
PULSE GENERATOR
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Troubleshooting
