Inspection Procedure A-4: Electric tailgate automatic operation (close) does not work normally.


caution Before replacing the ECU, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • A component other than Mitsubishi genuine parts or accessories is fitted on the tailgate.
  • The quarter trim interferes with the electric tailgate motor arm.
  • Improperly installed weatherstrip
  • Half latch switch system failed
  • Neutral latch switch system failed
  • Damaged tailgate gas spring
  • Damaged electric tailgate control unit
  • Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE


STEP 1. Check of electric tailgate control unit learning



Q. Is a replacement of electric tailgate control unit, battery, or fuse with tailgate open performed?





STEP 2. Parts installation check of tailgate



Q. Is the check result normal?





STEP 3. Tailgate gas spring check



Q. Is the check result normal?





STEP 4. Interference inspection: quarter trim and electric tailgate motor arm



Q. Is the check result normal?





STEP 5. Weatherstrip installation check



Q. Is the check result normal?





STEP 6. M.U.T.-III data list




  • Half latch switch: OFF → ON
  • Neutral switch: OFF → ON
Item No.
 Item name
 Normal conditions
Item 5
 Half latch switch
 OFF → ON
Item 8
 Neutral switch
 OFF → ON
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?







STEP 7. System retest



Q. Is the check result normal?