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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 332 (Antilock Brake System - Hybrid (Hp2)) >> Diagnostic Information and Procedures >> DTC C012E or C12FE >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

The electronic brake control module (EBCM) uses input from the boost pressure sensor for more accurate control during brake and vehicle stability enhancement system event. The boost pressure sensor is internal to the brake pressure modulator valve. The boost control function will keep operating amongst conditions that cause the boost pressure to be limited to less than commanded. The boost control continues to apply until the boost pressure available is no greater than the master cylinder pressure the driver is applying.

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