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Home >> Chevrolet >> 2007 >> Optra LT, Automatic >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Antilock Brake System >> Diagnostic Information and Procedures >> ABS Indicator Always On (North America) >> Circuit Description

Circuit Description

Battery voltage is supplied to the antilock brake system (ABS) warning lamp with the ignition switch in the ON or START position. The warning lamp should be activated only by the ABS control module internally supplying ground to terminal 4.

This procedure checks for a short to ground in the wiring or a defective electronic brake control module (EBCM).

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