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Home >> Chevrolet >> 2005 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 401 (Computer/Integrating Systems) >> Diagnostic Information and Procedures >> DTC B1433 >> Circuit/System Description
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Circuit/System Description

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) controls the R3 RUN relay through the run relay coil control circuit by applying voltage to the coil side of the relay. The R3 RUN relay is energized when any of the following conditions are true:

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