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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1318 (Wiring Systems And Power Management - Service, Troubleshooting & Diagnosis) >> Power Mode Mismatch >> Conditions for Setting the DTC >> B1440

Conditions for Setting the DTC: B1440

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

BCM senses an open or short to voltage on the off/run/crank voltage circuit when both ignition accessory/run and ignition run/crank parameters are active.

BCM senses an open on the B+ circuit to the ignition switch while the engine is running. An open on the B+ circuit can be caused by a short to ground on any of the circuits listed below:

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