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Home >> Pontiac >> 2001 >> Sunfire L4-2.2L VIN 4 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> - Standard Model (Non-Alternative Fuels) >> Scan Tool Diagnostics >> Scan Tool Data Definitions >> TR Switch
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TR Switch

RANGE HIGH OR LOW
A transaxle mounted switch is used as an input to let the PCM know what position the gear select lever is in. The scan tool status will switch from High to Low as different combinations are met. In Park, PRNDL P and A will be Low and B and C will be High.