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

DTC Code DTC Name
Security Indicator Light Does not Blink

DESCRIPTION

The transponder key ECU assembly blinks the security indicator light when the immobiliser is set.

WIRING DIAGRAM

B271008E17

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.

  • When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE

  1. SYSTEM CHECK

    1. Check the vehicle specification.

    Result

    Proceed to

    w/o Theft Deterrent System

    w/ Theft Deterrent System
    w/ Theft Deterrent System

    PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR)Click here

    w/o Theft Deterrent System

  2. PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR)

    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 / Active Test.

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

      Body Electrical > Immobiliser > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Security Indicator

      Security indicator light

      ON or OFF

      -

      Body Electrical > Immobiliser > Active Test

      Tester Display

      Security Indicator

      OK

      Security indicator light can be turned on and off using the GTS.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

  3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - TELLTALE LIGHT ASSEMBLY AND BODY GROUND)

    1. Disconnect the G88 transponder key ECU assembly connector.

    2. Disconnect the G43 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

      G43-21 (LP) - G88-8 (IND)

      Always

      Below 1 Ω

      G43-21 (LP) - Body ground

      Always

      10 kΩ or higher

      G88-8 (IND) - Body ground

      Always

      10 kΩ or higher

      G43-13 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK TRANSPONDER KEY ECU ASSEMBLY (TERMINAL IND)

    1. Connect the G88 transponder key ECU assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G43-21 (LP) - Body ground

      Key not in ignition key cylinder

      Pulse generation

      Key in ignition key cylinder

      Below 1 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)

    Click here

    NG

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

  5. PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR)

    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 or Main Body / Active Test.

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

      Body Electrical > Immobiliser > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Security Indicator

      Security indicator light

      ON or OFF

      -

      Body Electrical > Immobiliser > Active Test

      Tester Display

      Security Indicator

      Body Electrical > Main Body > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Security Indicator

      Security indicator light

      ON or OFF

      -

      Body Electrical > Main Body > Active Test

      Tester Display

      Security Indicator

    Result

    Result

    Proceed to

    Security indicator light operation is normal when performing the "Main Body" and "Immobiliser" Active Test

    A

    • Security indicator light operation is not normal when performing the "Immobiliser" Active Test

    • Security indicator light operation is normal when performing the "Main Body" Active Test

    B

    • Security indicator light operation is normal when performing the "Immobiliser" Active Test

    • Security indicator light operation is not normal when performing the "Main Body" Active Test

    C

    Security indicator light operation is not normal when performing the "Main Body" and "Immobiliser" Active Test

    D
    B

    CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - TRANSPONDER KEY ECU ASSEMBLY)Click here

    C

    CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU)Click here

    D

    CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU AND BODY GROUND)Click here

    A

  6. CHECK SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) 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.*2

      Click here

      OK

      The security indicator light is on.

    Result

    Proceed to

    Both *1 and *2 are OK

    *1 is NG (*2 is OK)

    *2 is NG (*1 is OK) (for LHD)

    *2 is NG (*1 is OK) (for RHD)

    Both *1 and *2 are NG
    Both *1 and *2 are OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick hereClick hereClick hereClick here

    *1 is NG (*2 is OK)

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    *2 is NG (*1 is OK) (for LHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    *2 is NG (*1 is OK) (for RHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    Both *1 and *2 are NG

    REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)

    Click here

  7. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - TRANSPONDER KEY ECU ASSEMBLY)

    1. Disconnect the G43 security indicator light (telltale light assembly) connector.

    2. Disconnect the G88 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

      G88-8 (IND) - G43-21 (LP)

      Always

      Below 1 Ω

      G88-8 (IND) - Body ground

      Always

      10 kΩ or higher

      G43-21 (LP) - 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

  8. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU)

    1. Disconnect the G43 security indicator light (telltale light assembly) connector.

    2. Disconnect the G79 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G79-22 (IND) - G43-21 (LP)

      Always

      Below 1 Ω

      G79-22 (IND) - Body ground

      Always

      10 kΩ or higher

      G43-21 (LP) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK (for LHD)

    OK (for RHD)

    NG
    OK (for LHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    OK (for RHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU AND BODY GROUND)

    1. Disconnect the G43 security indicator light (telltale light assembly) connector.

    2. Disconnect G88 transponder key ECU assembly connector.

    3. Disconnect the G79 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G88-8 (IND) - G43-21 (LP)

      Always

      Below 1 Ω

      G79-22 (IND) - G43-21 (LP)

      Always

      Below 1 Ω

      G88-8 (IND) - Body ground

      Always

      10 kΩ or higher

      G79-22 (IND) - Body ground

      Always

      10 kΩ or higher

      G43-21 (LP) - Body ground

      Always

      10 kΩ or higher

      G43-13 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. REPLACE TELLTALE LIGHT ASSEMBLY

    1. Temporarily replace the security indicator light (telltale light assembly) with a new or known good one.

      Click here

    2. When the immobiliser is set or the theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

      OK

      Security indicator light blinks.

    Result

    Proceed to

    OK

    NG
    OK

    END (SECURITY INDICATOR LIGHT [TELLTALE LIGHT ASSEMBLY] WAS DEFECTIVE)

    NG

  11. REPLACE TRANSPONDER KEY ECU ASSEMBLY

    1. Replace the transponder key ECU assembly with a new one.

      Tip:

      Refer to the Service Bulletin.

    2. When the immobiliser is set or the theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

      OK

      Security indicator light blinks.

    Result

    Proceed to

    OK

    NG (for LHD)

    NG (for RHD)
    OK

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    NG (for LHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    NG (for RHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here