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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (12 V Starting And Charging - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC U3003 >> Circuit/System Description

Circuit/System Description

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The Control Module monitors the voltage in the battery positive voltage circuit. If the monitored voltage is improper, the control module will set DTC U3003.

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