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Home >> Chevrolet >> 2007 >> Optra LT, Automatic >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Antilock Brake System >> Description and Operation >> ABS Description and Operation >> Antilock Braking Mode - Apply

Antilock Braking Mode - Apply

Fig 1: Antilock Braking Mode Schematic - Apply
GM1291792Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Left Rear
2 Right Front
3 Left Front
4 Right Rear

If a wheel speed sensor detects a wheel locking up, the electronic brake control module (EBCM) closes the normally open inlet valve for the brake on that wheel to prevent adding more hydraulic pressure to that brake.