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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Mirror System) >> Diagnostic Information and Procedures >> DTC B154A or B154B >> 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. Verify the function:Driver SideDriver Mirror Horizontal Movement = Left/RightA9A Outside Rearview Mirror - Driver
    • If the component does not work as specified 

      M77D Outside Rearview Mirror Motor - Driver

    • Go to next step: If the component works as specified 
  3. Verify the function:Driver SideDriver Mirror Vertical Movement = Up/Down
    • If the component does not work as specified 

      M77D Outside Rearview Mirror Motor - Driver

    • Go to next step: If the component works as specified 
  4. Verify the function:Passenger SidePassenger Mirror Horizontal Movement = Left/RightA9B Outside Rearview Mirror - Passenger
    • If the component does not work as specified 

      M77P Outside Rearview Mirror Motor - Passenger

    • Go to next step: If the component works as specified 
  5. Verify the function:Passenger SidePassenger Mirror Vertical Movement = Up/Down
    • If the component does not work as specified 

      M77P Outside Rearview Mirror Motor - Passenger

    • Go to next step: If the component works as specified 
  6. All OK.
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