B2503

Circuit Description with 4T80-E Automatic Transaxle
When the body control module (PZM) receives a serial data message from the powertrain control module (PCM) that the transaxle is in PARK, the PZM grounds the PARK relay control circuit. The PZM monitors this output and determines the actual voltage.

Conditions for Setting the DTC
The PZM determines that the PARK relay control circuit is shorted to ground.

Action Taken When the DTC Sets
The PZM will continue commanding the requested state until the state is achieved or until the request changes.

Conditions for Clearing the DTC
The PZM determines that the PARK relay control circuit is no longer shorted to ground.