mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Throttle Position Sensor|Testing and Inspection > < Manual Transmission
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Throttle Position Sensor: Description and Operation
Automatic Transmission

Throttle Sensor

PURPOSE

Provides ECU with signal related to throttle open angle.

LOCATION

Attached to throttle body.

OPERATION

Sensor is a potentiometer attached to the throttle body and splined to the throttle shaft. The potentiometer rotates with the shaft as the throttle
opens and closes. Varying potentiometer resistance alters the reference voltage supplied by the ECU, allowing it to read throttle valve opening
angle. This input is used in ECU calculations for fuel injection quantity and timing, idle speed control, purge control, A/C cut-off, ignition timing
control.

 

Throttle Position Sensor|Testing and Inspection > < Manual Transmission