INSPECTION PROCEDURE A-1: Central Door Locking System does not Work at all. <Using SWS Monitor>


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














COMMENT ON TROUBLE SYMPTOM



POSSIBLE CAUSES



  • Malfunction of the driver’s door lock actuator
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. ECU check by using the SWS monitor




  • Ignition switch: OFF
ECU TO BE CHECKED
  • ETACS ECU
OK: "OK" is displayed on the "ETACS ECU" menu.

Q. Is the check result normal?





STEP 2. ETACS switch data by using the SWS monitor




  • Driver’s door: Unlock → Lock
Item No.
 Item name
 Normal condition
Item 22
 Dr door lock actuator unlock SW
 from ON to OFF
OK: Normal condition are displayed for all the items.

Q. Is the check result normal?





STEP 3. Connector check: D-419 ETACS-ECU connector


Q. Is the check result normal?





STEP 4. Check the wiring harness between D-419 ETACS-ECU connector terminal No.2 and fusible link (2).


note Prior to the wiring harness inspection, check intermediate connector D-240 and junction block connector D-404, and repair if necessary.

  • Check the power supply line for open or short circuit.

Q. Is the check result normal?





STEP 5. Retest the system.



Q. Is the check result normal?