Inspection Procedure B-7: Tailgate sensor signal is not received.



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


COMMENTS ON TROUBLE SYMPTOM




PROBABLE CAUSES



  • Tailgate sensor malfunction
  • Damaged electric tailgate control unit
  • Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III data list


(1)Disconnect the negative battery terminal and wait for approximately 30 seconds.
(2)Check the signals related to the electric tailgate operation.

  • Tailgate sensor (left): OFF → ON
  • Tailgate sensor (right): OFF → ON
Item No.
Item name
Normal conditions
Item 9
Touch sensor (left)
OFF → ON
Item 10
Touch sensor (right)
OFF → ON
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?









STEP 2. Check of open circuit in TSG line between electric tailgate control unit connector and tailgate sensor (LH) and (RH) connector.


Q. Is the check result normal?





STEP 3. Tailgate sensor (LH) check.



Q. Is the check result normal?





STEP 4. Check of short to power supply, short to earth, and open circuit in TSL line between electric tailgate control unit connector and tailgate sensor (LH) connector.


Q. Is the check result normal?





STEP 5. Tailgate sensor (RH) check.



Q. Is the check result normal?





STEP 6. Check of short to power supply, short to earth, and open circuit in TSR line between electric tailgate control unit connector and tailgate sensor (RH) connector.


Q. Is the check result normal?





STEP 7. System retest



Q. Is the check result normal?