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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> DTC B371A >> Circuit/System Description

Circuit/System Description

B+ voltage and ground are supplied to the windshield wiper motor. Whenever the ignition is ON or in accessory position, the body control module (BCM) sends the wiper/washer switch status through the LIN communication bus. If a fault occurs at any time in the windshield wiper motor, the BCM will set the DTC.