ENGINE IMMOBILISER SYSTEM Security Indicator Light Does not Blink

DESCRIPTION


WIRING DIAGRAM

A01FVDNE02

INSPECTION PROCEDURE

Note


  • Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to the Service Bulletin.

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR LIGHT)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.

      Entry & Start (Certification ECU [Smart Key ECU Assembly])
      Tester Display Test Part Control Range Diagnostic Note
      Immobiliser Indicator Security indicator light OFF/ON -
      OK
      The security indicator light operates normally.

    NG

    CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - 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 is on Click here.*2

      OK
      The security indicator light is on.
      Result
      Result Proceed to
      *1 is NG (*2 is OK) A
      *2 is NG (*1 is OK) B

    B

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

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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


    1. Disconnect the N68 security indicator light (multi-media module receiver assembly) connector.

    2. Disconnect the N94 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N94-8 (IND) - N68-37 (SEUC) Always Below 1 Ω
      N94-8 (IND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the N68 security indicator light (multi-media module receiver assembly) connector.

    2. Measure the voltage and check the pulse according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N68-37 (SEUC) - Body ground Power switch off → Power switch on (IG) Pulse generation → Below 2 V

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE SECURITY INDICATOR LIGHT (MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here