Circuit/System Description
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) supplies B+ to terminal 5, X1. For vehicles equipped with a Run relay, the BCM controls the Run relay through the 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 ACCESSORY or RUN.
- The vehicle is remote started.
- The vehicle is in retained accessory power (RAP) mode.