Circuit/System Description
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) controls the RUN relay through the run relay coil control circuit by applying voltage to the coil side of the relay. The RUN relay is energized when any of the following conditions are true:
- Ignition Switch is in ACC or RUN.
- The vehicle was remote started.
- The vehicle is in retained accessory power (RAP) mode.