Engine Coolant Temperature (ECT) Sensor

Threaded into an engine coolant passage near thermostat housing, this sensor inputs coolant temperature to ECA. The signal from ECT affects following:

• Air/Fuel Ratio
• Idle Speed
• EGR Flow
• Purge Flow
• Fuel Pressure
• Boost Pressure (Turbo Engine)
• Ignition Timing Output Signal From ECA