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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1635 (Body Control System) >> Diagnostic Information and Procedures >> DTC B1440: Monitored Ignition Switch Circuit Has Malfunctioned >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

One of the 3 monitored ignition switch circuits has malfunctioned. The DTC will set, if one of the following situations is present:

Fig 1: Incorrect Ignition Switch Inputs
G01577433Courtesy of GENERAL MOTORS CORP.
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