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Home >> Chevrolet >> 2013 >> Volt >> Repair and Diagnosis >> External Pages >> Different car >> Section 183 (Hybrid/EV Control System) >> Diagnostic Information and Procedures >> Drive Mode Select Switch Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) monitors the state of the drive mode switch status. The BCM sends the drive mode 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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