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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B2A00 >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to Keyless Entry System Description and Operation (Without ATH) , or Keyless Entry System Description and Operation (With ATH)

Circuit Description
Signal The control module input circuit has an internal resistance connected to 12 V.
Ground Chassis Ground
Component Description
A23D Door Latch Assembly - Driver 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.