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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B144B: Run/Crank Power Relay >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) controls the ignition main relay (underhood) and the ignition main relay (rear body) through the control circuit by applying voltage to the ignition run/crank relay coil control circuit. The ignition main relay (underhood) and the ignition main relay (rear body) are energized when the ignition switch is in the RUN or the CRANK position, or when a remote start is requested

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