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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 453 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0127: Seat Belt Switch Circuit Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Seat belt buckle switch circuit consists of a seat belt buckle switch and Sensing and Diagnostic Module (SDM). SDM monitors seat belt buckle switch for a buckled/unbuckled state. If SDM detects a malfunction within the seat belt buckle switch circuit, a Diagnostic Trouble Code (DTC) will set.

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