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Home >> Oldsmobile >> 1998 >> Cutlass V6-191 3.1L VIN M SFI >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Body Control Module >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data >> Body Function Controller (BFC) to Cluster Data >> Gear Position
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Gear Position

Gear Position - Range Park/Reverse/Neutral/Drive/Drive3/Drive 2/Drive1


This data indicates what message is being sent from the Body Function Controller (BFC) to the Instrument Cluster to control illumination of the PRNDL display. The Powertrain Control Module (PCM) reads the Transaxle Range Switch and transmits the selected gear position information over the Class 2 serial data serial data line. The Body Function Controller (BFC) reads this gear selection information on the Class 2 serial data line and transmits this information to the Instrument Cluster over the Serial Peripheral Interface (SPI) serial data line. The Instrument Cluster turns on the correct PRNDL indicator.
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