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Home >> Cadillac >> 2015 >> CTS V, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System (Coupe) >> Diagnostic Information and Procedures >> DTC U1826 or U1827: Lost Communication With Module >> Circuit/System Description
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Circuit/System Description

The electronic brake control module (EBCM) activates other control modules connected to the CAN serial data circuits by applying voltage when the ignition key is in ACC, ON or START. The EBCM, Yaw and Lateral Accelerometer Sensor, and the Steering Wheel Position Sensor are the only control modules connected to the CAN bus serial data circuits.