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Home >> Hummer >> 2009 >> H3 Base, Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B151B >> Circuit/System Description
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Circuit/System Description

The generator battery control module (GBCM) monitors its internal battery current sensor for many charging system operations, and also for diagnostic purposes. If reversed polarity of the battery current is sensed, then DTC B151B will set.

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