Normal Operation

The Instrument Panel Cluster (IPC) displays SHIFT TO PARK when the vehicle was turned off with the shifter out of the PARK (P) position. The Remote Function Actuator (RFA) module receives a park detect input from the selector lever. When the selector lever is in the PARK (P) position, the park detect switch opens removing the ground to the RFA module. When the selector lever is out of the PARK (P) position, the park detect switch closes and grounds the input to the RFA module. The RFA module sends a command to the IPC over the Medium Speed Controller Area Network (MS-CAN) communication bus to display the SHIFT TO PARK message.

• DTC P081C:11 (Park Input Circuit: Circuit Short to Ground) - an on-demand DTC that sets if the RFA module detects a short to ground on the park input circuit.

This pinpoint test is intended to diagnose the following: 

• Message center concern
• Wiring, terminals or connectors
• Park detect switch (part of the selector lever)
• RFA module