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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 744 (Body Control System) >> Diagnostic Information and Procedures >> DTC B1374: Ignition 1 Input Is Inactive >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

The BCM uses a input from the ignition switch to determine the power mode that the vehicle is in, this input is ignition 1. When the BCM senses that ignition 1 is inactive when ignition 0 and 3 are active and the engine is running, DTC B1374 is set.

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