IMMOBILISER SYSTEM(w/ Entry and Start System) Security Indicator Light Does not Blink

DESCRIPTION


WIRING DIAGRAM

A01TB70E18
*1 Security Indicator Light (Telltale Light Assembly)
*2 Certification ECU (Smart Key ECU Assembly)
*3 Main Body ECU (Multiplex Network Body ECU)
*4 CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 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 Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). 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.

  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

  • The immobiliser system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the immobiliser system after confirming that the communication systems are functioning properly.

    Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (IMMOBILISER INDICATOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start / Active Test.

    5. Perform the Active Test according to the display on the GTS.


      Body Electrical > Entry&Start > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Immobiliser Indicator Security indicator light OFF/ON -

      Body Electrical > Entry&Start > Active Test
      Tester Display
      Immobiliser Indicator
      OK
      The security indicator light operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Click here

    OK

  2. CHECK SECURITY INDICATOR LIGHT OPERATION


    1. When the immobiliser is set, check that the security indicator light blinks.*1

      OK
      The security indicator light blinks normally.

    2. When the theft deterrent system is in the arming preparation state, check that the security indicator light illuminates.*2

      OK
      The security indicator light illuminates normally.
      Result
      Result Proceed to
      *1 is NG (*2 is OK) A
      *2 is NG (*1 is OK) (for LHD) B
      *2 is NG (*1 is OK) (for RHD) C

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

  3. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Disconnect the E35 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the E48 security indicator light (telltale light assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E48-9 (LP) - E35-18 (IND) Always Below 1 Ω
      E48-9 (LP) - Body ground Always 10 kΩ or higher
      E35-18 (IND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E48-6 (ILL-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELLTALE LIGHT ASSEMBLY (SECURITY INDICATOR LIGHT) for Sedan: Click here
    REPLACE TELLTALE LIGHT ASSEMBLY (SECURITY INDICATOR LIGHT) except Sedan: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR