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Home >> Cadillac >> 2009 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Hybrid Engine Controls - DTC B008A To DTC P0AF7) >> DTC P0642, P0643, P0652, or P0653 >> Circuit/System Description

Circuit/System Description

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The drive motor generator power inverter module (PIM) contains two motor control modules (MCM) and a hybrid powertrain control module (HPCM). Each MCM utilizes a 5 Volt reference power supply for internal circuit needs. This fault is handled inside the PIM and no external circuits are involved.

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