PRNDL/Select Shift Indicator

The IPC receives the selector lever (PRNDL) status message from the PCM. The IPC also uses a park detect switch (part of the selector lever) input to signal the IPC that the shift lever is fully seated in the PARK (P) position. The IPC compares the park detect switch input with the selector lever (PRNDL) status message sent from the PCM and illuminates the appropriate gear position in the PRNDL indicator.

The IPC provides a battery reference voltage to the brake shift interlock. When the selector lever is in PARK (P), the brake shift indicator routes the reference voltage to ground, pulling the circuit low to the IPC. When the selector lever is moved out of PARK (P), the brake shift interlock opens the ground sending the reference voltage high.

The select shift display area indicates to the driver which gear is currently selected when the transmission is in the select shift mode. When the transmission is in select shift manual mode, the gear number is displayed in the select shift display area preceded by the letter M (example: M1, M2, M3 etc).