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Home >> Chevrolet >> 1999 >> Tracker 4D Utility, 4WD, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Transaxle Range (TR) Switch Signal (A/T Only)

Transaxle Range (TR) Switch Signal (A/T Only)

This signal is sent to PCM from Park/Neutral Position (PNP) switch when shift lever is in Park or Neutral. PCM uses this signal to control fuel injection timing and IAC valve operation.

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