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Home >> Pontiac >> 2004 >> Sunfire Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control System >> Description and Operation >> Body Control System Description and Operation >> Serial Data Power Mode

Serial Data Power Mode

On vehicles that have several control modules connected by serial data circuits, one module is the Power Mode Master (PMM). On this vehicle the PMM is the BCM. The PMM receives 2 signals from the ignition switch.

To determine the correct power mode the PMM uses the following circuits: