Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify the scan tool Mirror Select Switch parameter changes from Idle to Left and Right when cycling the Driver Door Lock/Window Switch.
- If the parameter does not change
  Replace the Driver Door Lock/Window Switch.
- If the parameter changes
Verify the scan tool Mirror Motor parameter changes from Idle to Up, Down, Right and Left when cycling the Driver Door Lock/Window Switch.
- If the parameter does not change
  Replace the Driver Door Lock/Window Switch.
- If the parameter changes
Verify the A9D Outside Rearview Mirror-Driver and A9P Outside Rearview Mirror-Passenger moves when commanding the Mirror Right/Left and Mirror Up/Down with a scan tool.
- If the A9D Outside Rearview Mirror-Driver or A9P Outside Rearview Mirror-Passenger does not move RIGHT or LEFT or UP or DOWN
  Refer to Circuit/System Testing - Outside Mirror Movement Malfunction.
- If the A9D Outside Rearview Mirror-Driver and A9P Outside Rearview Mirror-Passenger moves RIGHT, LEFT, UP and DOWN
Verify the scan tool Mirror Vertical Position parameters are between 0.2-4.8 V and change when commanding the Mirror Vertical Movement Up/Down with a scan tool.
- If not between 0.2-4.8 V or does not change
  Refer to Circuit/System Testing - Mirror Position Sensor Circuit Test.
- If between 0.2-4.8 V and changes
Verify the scan tool Mirror Horizontal Position parameters are between 0.2-4.8 V and change when commanding the Mirror Horizontal Movement Right/Left with a scan tool.
- If not between 0.2-4.8 V or does not change
  Refer to Circuit/System Testing - Mirror Position Sensor Circuit Test.
- If between 0.2-4.8 V and changes
All OK.