Conditions for Setting the DTC
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 DTC will set only when the module requests the output and there is a short to ground at BCM terminal 5, X1 or in the Run relay coil control circuit.