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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 183 (Body Control System) >> Diagnostic Information and Procedures >> DTC B1440 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) monitors the Ignition 0, Ignition 1 and the Accessory signals from the ignition switch. The BCM uses the voltage state (B+ or 0) and the sequence of state changes to determine the power mode called for by the ignition switch.

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