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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System - Hybrid >> Diagnostic Information and Procedures >> DTC B151A: Low Battery Capacity Detected >> Circuit/System Description
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Circuit/System Description

The body control module (BCM) monitors the battery voltage level during an engine crank event to detect a low battery voltage condition.