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Home >> Cadillac >> 2019 >> XTS Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B1474 or B3849 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify the scan tool parameter:Exterior Driver Door Handle Switch=Inactive
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. Operate the component:B27D Door Handle Switch - Driver Exterior - Pressed

    Verify the scan tool parameter:Exterior Driver Door Handle Switch=Active

    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  4. Verify the scan tool parameter:Exterior Passenger Door Handle Switch=Inactive
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  5. Operate the component:B27P Door Handle Switch - Passenger Exterior - Pressed

    Verify the scan tool parameter:Exterior Passenger Door Handle Switch=Active

    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  6. All OK.
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