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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B1534 or B1535 >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to: Power Door Locks Description and Operation 

Circuit Description
Signal The control module input circuit has an internal resistance connected to 12 V.
Ground Chassis Ground
Component Description
B27LR Door Handle Switch - Left Rear Exterior The switch has a normally open contact.When the switch is activated, the signal circuit to the control module is grounded.
B27RR Door Handle Switch - Right Rear Exterior The switch has a normally open contact.When the switch is activated, the signal circuit to the control module is grounded.
K84 Keyless Entry Control Module The control module also reads various switches and sensors and makes their values available via serial data.
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