Circuit/System Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The auxiliary power module (APM) 12-volt output voltage is used for a 12-volt line APM output voltage control and a 12-volt line voltage sensor rationality check. The starter/generator control module (SGCM) monitors the voltage sensor for the following:
- To detect the failure of the APM 12-volt voltage sensor circuit below valid range.
- To detect the failure of the APM 12-volt voltage sensor circuit above valid range.