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Home >> Cadillac >> 2009 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Hybrid Engine Electrical System (Hp2)) >> Diagnostic Information and Procedures >> DTC C0900 or C12E2 >> Circuit/System Description

Circuit/System Description

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The electronic brake control module (EBCM) monitors the 12 V battery positive (B+) voltage. If the voltage level is too high, damage may result in the system. When a high voltage condition is detected the EBCM turns OFF the system relay which removes 12 V battery voltage from the solenoid valves and pump motor, and DTC C0900 sets.

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