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.
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