INSPECTION PROCEDURE B-4: Encrypted Code cannot be Registered.


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 keyless entry transmitter
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Check the encrypted code registration mode.



Q. Is the check result normal?





STEP 2. ETACS switch data by using the SWS monitor.




  • Ignition switch: OFF (key inserted)
  • Hazard lamp switch: ON
Item No.
 Item name
 Normal condition
Item 03
 Key reminder switch
 OFF
Item 04
 Hazard lamp switch
 ON (only when switch is operated)
OK: Normal conditions are displayed for all the items.

Q. Are the check result normal?







STEP 3. Use the SWS monitor to examine the keyless entry system for signal reception.



Operation switch
 Normal conditions (received signal)
LOCK
 LOCK switch signal
UNLOCK
 UNLOCK switch signal
OK: By operating the switch as shown in the table above, relevant normal conditions are displayed.

Q. Are the check result normal?





STEP 4. Retest the system.



Q. Is the check result normal?