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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> Drive Mode Select Switch Malfunction >> Circuit/System Description
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Circuit/System Description

The body control module (BCM) monitors the state of the drive mode select switch. The BCM sends the drive mode select switch signal message to the ECM over the serial data circuits. The ECM uses this message to determine the following driver selected mode of operation:

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