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

DTC Code DTC Name
Security Indicator Light Does not Blink

DESCRIPTION

  • The certification ECU (smart key ECU assembly) blinks the security indicator light when the immobiliser is set (engine switch off, or driver door is opened and closed with engine switch on (IG)).

  • w/ Theft Deterrent System:

    The certification ECU (smart key ECU assembly) receives the security indicator light signal from the main body ECU (multiplex network body ECU) via CAN communication when the theft deterrent system is in the arming preparation state or alarm sounding state. Then, the certification ECU (smart key ECU assembly) blinks the security indicator light.

WIRING DIAGRAM

B278947E40

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 hereClick 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 - 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 - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

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

    2. Disconnect the E133 security indicator light connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E133-9 (LP) - E35-18 (IND)

      Always

      Below 1 Ω

      E133-9 (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 (SECURITY INDICATOR LIGHT - BODY GROUND)

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E133-8 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE CLOCK ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR