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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1433 (Sunroof System) >> Diagnostic Information and Procedures >> DTC B3973 >> Circuit Description

Circuit Description

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The power roof module provides power and ground for the power roof motor control. The power roof module applies power and ground to the roof motor control circuits depending on the desired direction. If the roof module detects a short to ground or an open in a roof motor control circuit, a DTC is set.

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