IMMOBILISER SYSTEM(w/o Entry and Start System) Key Cannot be Registered

DESCRIPTION

A maximum of 5 master key ID codes and 3 sub key ID codes can be registered.

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note

If the transponder key ECU assembly is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK REGISTRATION MODE


    1. Check that the system enters registration mode.

      OK
      System enters registration mode.
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

  2. CHECK SECURITY INDICATOR LIGHT OPERATION


    1. In registration mode, insert the key into the ignition key cylinder and check the security indicator light.

      Tech Tips

      If the new key ID code registration fails, code 2-1 will be output through the security light. Trying to re-register an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key ID codes exceeds the maximum limit, code 2-3 will be output through the security indicator light. The output details are shown in the following illustration.

      A01TAB0C01
      *1 Security Indicator Light *2 Normal (Immobiliser system is operating normally)
      *3 Code 2-1 *4 Code 2-2
      *5 Code 2-3 - -
      Result
      Result Proceed to
      Code 2-1 or Code 2-3 is output A
      Code 2-2 is output B

    B

    END (REGISTERED KEY WAS USED)

    A

  3. READ VALUE USING GTS (TRANSPONDER S-CODE, TRANSPONDER M-CODE)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Immobiliser / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Immobiliser > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Transponder S-code Number of registered sub key min. 0, max. 15 Number of registered sub key -
      Transponder M-code Number of registered master key min. 0, max. 15 Number of registered master key -

      Body Electrical > Immobiliser > Data List
      Tester Display
      Transponder S-code
      Transponder M-code
      Result
      Result Proceed to
      5 is displayed for "Transponder M-code" and 0 is displayed for "Transponder S-code" A
      0 is displayed for "Transponder M-code" and 3 is displayed for "Transponder S-code" B
      5 is displayed for "Transponder M-code" and 3 is displayed for "Transponder S-code" C
      Values are other than above D

    A

    KEY REGISTRATION (SUB-KEY)

    B

    KEY REGISTRATION (MASTER KEY)

    C

    MAXIMUM NUMBER OF KEYS ALREADY REGISTERED

    D

  4. KEY REGISTRATION


    1. Refer to the table below to determine if additional keys can be registered.

      Number of Keys Registered (Master and Sub) Proceed to
      0 New key ID code registration
      1 to 7 Additional key ID code registration

    2. Check if an additional key can be registered.

      OK
      Additional key can be registered.
      Result
      Proceed to
      OK
      NG

    OK

    END (KEY MALFUNCTION)

    NG

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

  5. INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    1. Remove the unlock warning switch assembly.

      Click here

    2. Inspect the unlock warning switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - UNLOCK WARNING SWITCH ASSEMBLY)


    1. Disconnect the E5 unlock warning switch assembly connector.

    2. Disconnect the E21 transponder key ECU assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E5-1 - E21-3 (KSW) Always Below 1 Ω
      E5-2 - Body ground Always Below 1 Ω
      E5-1 - Body ground Always 10 kΩ or higher
      E21-3 (KSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR