isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Throttle Position Sensor > < Diagram Information and Instructions|Page 1906
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Vehicle Speed Sensor: Description and Operation

PURPOSE

Provides the Engine Control Module (ECM) with vehicle speed information.

OPERATION

The ECM applies and monitors a 12V signal to the sensor.  When the drive wheels are turning, the sensor alternately grounds the circuit, creating a
pulsing action.  The ECM calculates vehicle speed based on the time between pulses. This sensor is used to help control the operation of the idle
air control system

Throttle Position Sensor > < Diagram Information and Instructions|Page 1906