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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Power Door Lock System) >> Diagnostic Information and Procedures >> DTC B1474 or B3849 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. B27D Door Handle Switch - Driver Exterior - Not Pressed

    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. B27P Door Handle Switch - Passenger Exterior - Not Pressed

    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 
  4. 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 
  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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