Accord L4-2.2L SOHC VTEC (1994)
Engine Coolant Temperature Switch: Description and Operation
Engine Coolant Temperature (ECT) sensor
PURPOSE
By measuring the amount of resistance at the sensor, the Engine Control Module (ECM) can adjust the length of injector opening time required by
the engine.
OPERATION
As water temperature increases, sensor resistance decreases. The ECM receives sensor information as resistance to ground. Water temperature
information is used to determine proper fuel delivery.
CONSTRUCTION
Temperature sensitive resistor (thermistor).
