Engine Control System 1A-11 Accelerator Position Sensor The accelerator control is accelerator position sensor type. This sensor is a potentiometer (variable resistance) installed to the accelerator pedal. Reference voltage is constantly applied to the sensor from ECM (engine control module) and the accelerator pedal stepping angle is detected from varying voltage. An accelerator switch (idle position switch) is also installed to the accelerator pedal. The accelerator switch is turned ON when the accelerator pedal is released and OFF when the accelerator pedal is stepped on. Legend 1. Accelerator position sensor 2.
Accelerator switch operating point Engine Coolant Temperature Sensor (Coolant Temperature Sensor / ECT) The engine coolant temperature sensor serves for both the ECM and thermo meter unit. The engine coolant temperature sensor is of the thermistor type that the electric resistance reduces with the increase of the temperature. It is installed on the left front of the cylinder head. 1 (V) 5 (WOT) 4 Voltage 3 Output 2 2 1 (Idle) 49 0 10 20 30 40 50 (mm) Stroke (on Pedal) LNW21AMF000701-X