ENGINE 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 the Service Bulletin.


  • When using the GTS with the vehicle ignition switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Immobiliser. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

PROCEDURE


  1. CHECK REGISTRATION MODE


    1. Check that the system enters registration mode.

      OK
      System enters registration mode.

    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.

      B001DP6E58
      Text in Illustration
      *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.

      Immobiliser
      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 -
      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.

    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.


    NG

    REPLACE UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the G3 unlock warning switch assembly connector.

    2. Disconnect the G74 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
      G3-1 - G74-3 (KSW) Always Below 1 Ω
      G3-2 - Body ground Always Below 1 Ω
      G3-1 - Body ground Always 10 kΩ or higher
      G74-3 (KSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR DRIVER SIDE)


    1. Remove the front door courtesy light switch assembly (for Driver Side) Click here.

    2. Inspect the front door courtesy light switch assembly (for Driver Side) Click here.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR DRIVER SIDE) Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY)


    1. for LHD:


      1. Disconnect the R7 front door courtesy light switch assembly LH connector.

      2. Disconnect the G74 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
        G74-7 (CTY) - R7-1 Always Below 1 Ω
        R7-1 - Body ground Always 10 kΩ or higher
        G74-7 (CTY) - Body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the Q8 front door courtesy light switch assembly RH connector.

      2. Disconnect the G74 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
        G74-7 (CTY) - Q8-1 Always Below 1 Ω
        Q8-1 - Body ground Always 10 kΩ or higher
        G74-7 (CTY) - Body ground Always 10 kΩ or higher

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR