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Home >> Chevrolet >> 2005 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 945 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1A90 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 Chevrolet Malibu. 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 by comparing the average of the 2 power inverter module (PIM) sensors and subtracting the module temperature to detect a faulty sensor.

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