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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1AFC, P1AFD, or P1B02 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

This is an internal fault detection of the drive motor generator power inverter module (PIM) assembly. This fault is handled inside the PIM and no external circuits are involved. The PIM contains two motor control modules (MCMs) and the hybrid powertrain control module (HPCM). In addition to GM LAN, these modules share dedicated, internal PIM communications circuits.

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