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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 B3972 >> Circuit Description

Circuit Description

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The power roof module monitors the power roof motor hall effect sensors during roof motor operation. When the roof module detects that there are no hall sensor pulses or there is a difference of greater than 80 counts between sensor 1 and 2, a DTC is set.

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