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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Mirror System) >> Diagnostic Information and Procedures >> DTC B154A or B154B: Mirror Internal Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the A9A Outside Rearview Mirror-Driver moves when commanding the Driver Mirror Horizontal Movement Right/Left and Driver Mirror Vertical Movement Up/Down with a scan tool.
    • If the A9A Outside Rearview Mirror-Driver does not move RIGHT or LEFT or UP or DOWN 

      Replace the M77D Outside Rearview Mirror Motor-Driver.

    • If the A9A Outside Rearview Mirror-Driver moves RIGHT, LEFT, UP and DOWN 
  3. Verify the A9B Outside Rearview Mirror-Passenger moves when commanding the Passenger Mirror Horizontal Movement Right/Left and Passenger Mirror Vertical Movement Up/Down with a scan tool.
    • If the A9B Outside Rearview Mirror-Passenger does not move RIGHT or LEFT or UP or DOWN 

      Replace the M77P Outside Rearview Mirror Motor-Passenger.

    • If the A9B Outside Rearview Mirror-Passenger moves RIGHT, LEFT, UP and DOWN 
  4. All OK.
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