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Home >> Pontiac >> 2002 >> Aztek AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1507 (Hybrid Control System) >> Diagnostic Information and Procedures >> DTC P1A90 >> Circuit/System Description

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 starter/generator control module (SGCM) monitors to detect the failure of the auxiliary power module (APM) temperature sensor circuit by taking the average of the 2 power inverter module (PIM) sensors and subtracting the module temperature and looking for a difference.