Circuit Description

WARNING: This page is about a different car, the 1999 GMC Sierra and 1999 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Battery rundown protection function allows BCM to disable courtesy lights, cargo lights and underhood light 40 minutes after ignition is turned off. BCM monitors output of inadvertent power relay on circuit No. 1732.

Conditions for setting DTC:

When BCM is commanding inadvertent power relay on circuit No. 1393 and has an absence of voltage on circuit No. 1732.
System voltage 9-16 volts.
Conditions must be met for .5 second.