INSPECTION PROCEDURE A-2: Any of The Sunroof Switch Positions is Defective.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.










COMMENTS ON TROUBLE SYMPTOM



POSSIBLE CAUSES



  • Malfunction of the sunroof switch
  • Malfunction of the sunroof motor assembly (sunroof-ECU)
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE


STEP 1. Connector check: E-02 sunroof switch connector


Q. Is the check result normal?





STEP 2. Check the sunroof switch.



Q. Is the check result normal?





STEP 3. Connector check: E-03 sunroof motor assembly connector


Q. Is the check result normal?





STEP 4. Retest the system.


Q. Which switch position is defective?







STEP 5. Check the wiring harness between E-03 sunroof motor assembly connector terminal No.7 and E-02 sunroof switch connector terminal No.3.



  • Check the communication line for open circuit.

Q. Is the check result normal?





STEP 6. Check the wiring harness between E-03 sunroof motor assembly connector terminal No.8 and E-02 sunroof switch connector terminal No.5.



  • Check the communication line for open circuit.

Q. Is the check result normal?





STEP 7. Check the wiring harness between E-03 sunroof motor assembly connector terminal No.6 and E-02 sunroof switch connector terminal No.6.



  • Check the communication line for open circuit.

Q. Is the check result normal?





STEP 8. Retest the system.



Q. Is the check result normal?