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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications System >> Diagnostic Information and Procedures >> DTC P1EB9 >> Circuit/System Description
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Circuit/System Description

The hybrid powertrain control module 2 activates the high voltage energy communication bus enable circuit when the ignition is on. This circuit wakes up the control modules for high voltage energy bus communication.