Chery Automobile Co., Ltd.
06 - SQR484F ENGINE MANAGEMENT SYSTEM
06–243
06
Coolant Temperature Sensor
Description
The coolant temperature sensor is a negative temperature coefficient sensor, which is installed into the
mounting hole in thermostat holder.
Operation
The coolant temperature sensor provides an input signal for Engine Control Module (ECM). As temperature
increases, the resistance of sensor decreases. As coolant temperature changes, resistance of coolant
temperature sensor varies accordingly, resulting in a change in voltage of coolant temperature sensor signal
circuit. The ECM uses input signal to control air-fuel mixture, ignition timing, A/C compressor and radiator fan
on/off timing.
Removal
1. Turn off all electrical equipment and ignition switch.
2. Disconnect negative battery cable.
3. Drain coolant (See page 12-13).
4. Remove engine trim cover.
5. Remove coolant temperature sensor.
a. Disconnect coolant temperature sensor connector
and remove coolant temperature sensor.
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(Tightening torque: 11 - 16 N·m)
ï‚· Make sure engine is in low temperature before operating cooling system. Never open the expansion tank
cover and remove the drain cock plug when engine is operating or cooling system is in high temperature.
High-pressurized hot engine coolant and steam may flow out and cause serious injury.
ï‚· Remove the coolant temperature sensor when engine cools down to avoid scalding injury.
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