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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 B1474 or B3849 >> Component Testing

Component Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector: A24D Door Handle Assembly - Driver ExteriororA24P Door Handle Assembly - Passenger Exterior
  3. Test for infinite resistance between the test points: Signal terminal 1 & Ground terminal 5 - Switch - Not Pressed
    • If less than infinite resistance 

      Replace the component: A24 Door Handle Assembly

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points: Signal terminal 1 & Ground terminal 5 - Switch - Pressed
    • If 3 ohms or greater 

      Replace the component: A24 Door Handle Assembly

    • Go to next step: If less than 3 ohms 
  5. All OK.
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