Circuit/System Verification

Ignition ON.
Verify the scan tool Liftgate Front Control Switch parameter changes between Inactive and Active when pressing the S45B Liftgate Control Switch-Interior.
- If the parameter does not change
  Refer to Circuit/System Testing - Test 1
- Go to next step: If the parameter changes
Verify the scan tool Liftgate Mode Switch is between 125 counts and 350 counts and changes while rotating the S45B Liftgate Control Switch-Interior.
- If not between 125 counts and 350 counts or does not change
  Refer to Circuit/System Testing - Test 2
- Go to next step: If between 125 counts and 350 counts and changes
Verify the scan tool Liftgate Handle Switch parameter changes between Active and Inactive when pressing the S46B Liftgate Unlatch Switch.
- If the parameter does not change
  Refer to Circuit/System Testing - Test 3
- Go to next step: If the parameter changes
Verify the scan tool Liftgate Latch Pawl Switch, Liftgate Latch Ratchet Switch and Liftgate Latch Sector Switch parameters are as listed below:
- Liftgate Latch Pawl Switch parameter Close
- Liftgate Latch Ratchet Switch parameter Close
- Liftgate Latch Sector Switch parameter Inactive
- If any of the parameters are not as listed
  Refer to Circuit/System Testing - Test 4
- Go to next step: If the parameters are as listed
Verify the scan tool Body Control Module Rear Closure Ajar Switch parameter is Inactive.
- If the parameter is not Inactive
  Refer to Circuit/System Testing - Test 4
- Go to next step: If the parameter is Inactive
Verify the A23C Liftgate Latch Assembly will release the liftgate from the closed position when pressing the S46B Liftgate Unlatch Switch.
- If the A23C Liftgate Latch Assembly does not release
  Refer to Liftgate Latch Release/Cinch Malfunction
- Go to next step: If the A23C Liftgate Latch Assembly will release the liftgate
Liftgate Open
Verify the scan tool Liftgate Latch Pawl Switch and Liftgate Latch Ratchet Switch parameters are as listed below:
- Liftgate Latch Pawl Switch parameter Open
- Liftgate Latch Ratchet Switch parameter Open
- If any of the parameter are not as listed
  Refer to Circuit/System Testing - Test 4
- Go to next step: If the parameters are as listed
Verify the scan tool Body Control Module Rear Closure Ajar Switch parameter is Active.
- If the parameter is not Active
  Refer to Circuit/System Testing - Test 4
- Go to next step: If the parameter is Active
Verify the scan tool Liftgate Rear Close Switch parameter changes between Inactive to Active when pressing the B70 Liftgate Close Switch.
- If the parameter does not change
  Refer to Circuit/System Testing - Test 5
- Go to next step: If the parameter changes
Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3V-3.5V.
- If not between 3V-3.5V
  Refer to Circuit/System Testing - Test 6
- Go to next step: If between 3V-3.5V
Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71R Liftgate Object Sensor - Right is pressed.
- If not between 2.25-2.75V or does not change
  Test or replace the B71R Liftgate Object Sensor - Right.
- Go to next step: If between 2.25-2.75V and changes
Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71L Liftgate Object Sensor - Left is pressed.
- If not between 2.25-2.75V or does not change
  Test or replace the B71L Liftgate Object Sensor - Left.
- Go to next step: If between 2.25-2.75V and changes
Verify the liftgate will smoothly power open and close when commanding Liftgate Open/Close with a scan tool.
- If the liftgate does not power open or power close
  Refer to Circuit/System Testing - Test 7
- If the liftgate performs an erratic power open or close motion
  Refer to Circuit/System Testing - Test 8
- Go to next step: If the liftgate does smoothly power open and close
All OK.