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Home >> Jeep >> 1998 >> Cherokee 2WD L6-4.0L VIN S >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Functional Operation >> Inputs and Outputs >> Inputs >> Transmission Park/Neutral Switch
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Transmission Park/Neutral Switch

TRANSMISSION PARK/NEUTRAL SWITCH
The park/neutral switch is located on the transmission housing and provides an input to the powertrain control module (PCM). This will indicate that the automatic transmission is in Park, Neutral or a drive gear selection. This input is used to determine idle speed (varying with gear selection), fuel injector pulse width, ignition timing advance and vehicle speed control operation.
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