Circuit/System Verification

Ignition ON.
Cover the windshield with a blanket or other suitable item.
Verify the A10 Inside Rearview Mirror face dims when shining a bright light into the rear light sensor
- If the A10 Inside Rearview Mirror does not dim
  Refer to Inside Review Mirror Dimming Inoperative
- If the A10 Inside Rearview Mirror dims
Verify the A10 Inside Rearview Mirror face transitions from dim to bright while commanding the Backup Lamps Active and Inactive with a scan tool.
- If the A10 Inside Rearview Mirror does not transition between dim and bright.
  Refer to Day-Night Disable Malfunction
- If the A10 Inside Rearview Mirror transitions between bright and dim states
All OK.