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1.05L REVOTORQ ENGINE
165
xiv. COOLANT TEMPERATURE SENSOR :
A semi conductor material changes its
resistance when exposed to variable temperature
source. Resistance decreases as temperature
increases. There are two temp sensors fitted on
water box. White colored sensor provides engine
operating temperature input to the Instrument
cluster and the brown colored sensor provides
engine operating temperature input to the ECU.
Corrections for injection parameters are done by
the ECU based on coolant temperature to run the
engine with maximum efficiency at all
temperatures.
Sensor Location :
Connector Details :
Pin Details :
Pin No
Description
1
Sensor Signal
2
Sensor Return
Equipment Required (Fig
. 284)
3 ½ Digital Multi-meter (DMM)
Water Bath
Heating arrangement for boiling the water
Measurement Set-up showing the water level up
to which the sensor should be dipped.