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

DESCRIPTION

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

WIRING DIAGRAM

A01LZPRE33

CAUTION / NOTICE / HINT

Note

If the transponder key ECU assembly is replaced, refer to Service Bulletin.

PROCEDURE


  1. SYSTEM CHECK


    1. Check the vehicle specification.

      Result
      Result Proceed to
      w/o Theft Deterrent System A
      w/ Theft Deterrent System B

    B

    PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR) Click here

    A

  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/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 - SECURITY INDICATOR LIGHT AND BODY GROUND)


    1. Disconnect E21 transponder key ECU assembly connector.

    2. Disconnect the E48*1 or E133*2 security indicator light connector.


      • *1: for Sedan

        *2: except Sedan

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      E48-9 (LP) - E21-8 (IND) Always Below 1 Ω
      E48-9 (LP) - Body ground Always 10 kΩ or higher
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E48-6 (ILL-) - Body ground Always Below 1 Ω
      except Sedan
      Tester Connection Condition Specified Condition
      E133-9 (LP) - E21-8 (IND) Always Below 1 Ω
      E133-9 (LP) - Body ground Always 10 kΩ or higher
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E133-8 (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 E21 transponder key ECU assembly connector.

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

      Standard Voltage
      for Sedan
      Tester Connection Condition Specified Condition
      E48-9 (LP) - Body ground Key not in ignition key cylinder Pulse generation
      Key in ignition key cylinder Below 1 V
      for except Sedan
      Tester Connection Condition Specified Condition
      E133-9 (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) for Sedan: Click here
    REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) except Sedan: 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/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/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 (SECURITY INDICATOR LIGHT - TRANSPONDER KEY ECU ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - MAIN BODY ECU) Click here

    D

    CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - MAIN BODY ECU OR TRANSPONDER KEY ECU) Click here

    A

  6. 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.*2

      Click here

      OK
      The security indicator light is on.
      Result
      Result Proceed to
      Both *1 and *2 are OK A
      *1 is NG (*2 is OK) B
      *2 is NG (*1 is OK) (for LHD) C
      *2 is NG (*1 is OK) (for RHD) D
      Both *1 and *2 are NG (for Sedan) E
      Both *1 and *2 are NG (except Sedan) F

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    C

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

    D

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

    E

    REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) Click here

    F

    REPLACE SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) Click here

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


    1. Disconnect the E48*1 or E133*2 security indicator light connector.


      • *1: for Sedan

        *2: except Sedan

    2. Disconnect the E21 transponder key ECU assembly connector.

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      E21-8 (IND) - E48-9 (LP) Always Below 1 Ω
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E48-9 (LP) - Body ground Always 10 kΩ or higher
      except Sedan
      Tester Connection Condition Specified Condition
      E21-8 (IND) - E133-9 (LP) Always Below 1 Ω
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E133-9 (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 (SECURITY INDICATOR LIGHT - MAIN BODY ECU)


    1. Disconnect the E48*1 or E133*2 security indicator light connector.


      • *1: for Sedan

        *2: except Sedan

    2. Disconnect the E108 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      E108-22 (IND) - E48-9 (LP) Always Below 1 Ω
      E108-22 (IND) - Body ground Always 10 kΩ or higher
      E48-9 (LP) - Body ground Always 10 kΩ or higher
      except Sedan
      Tester Connection Condition Specified Condition
      E108-22 (IND) - E133-9 (LP) Always Below 1 Ω
      E108-22 (IND) - Body ground Always 10 kΩ or higher
      E133-9 (LP) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

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

    B

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

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - MAIN BODY ECU OR TRANSPONDER KEY ECU)


    1. Disconnect the E48*1 or E133*2 security indicator light connector.


      • *1: for Sedan

        *2: except Sedan

    2. Disconnect E21 transponder key ECU assembly connector.

    3. Disconnect the E108 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      E21-8 (IND) - E48-9 (LP) Always Below 1 Ω
      E108-22 (IND) - E48-9 (LP) Always Below 1 Ω
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E48-9 (LP) - Body ground Always 10 kΩ or higher
      E48-6 (ILL-) - Body ground Always Below 1 Ω
      except Sedan
      Tester Connection Condition Specified Condition
      E21-8 (IND) - E133-9 (LP) Always Below 1 Ω
      E108-22 (IND) - E133-9 (LP) Always Below 1 Ω
      E21-8 (IND) - Body ground Always 10 kΩ or higher
      E133-9 (LP) - Body ground Always 10 kΩ or higher
      E133-8 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. REPLACE SECURITY INDICATOR LIGHT


    1. for Sedan:

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

      Click here

    2. except Sedan:

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

      Click here

    3. When the immobiliser is set or 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 WAS DEFECTIVE)

    NG

  11. REPLACE TRANSPONDER KEY ECU ASSEMBLY


    1. Temporarily replace the transponder key ECU assembly with a new or known good one.

      Tech Tips

      Refer to Service Bulletin.

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

      OK
      Security indicator light blinks.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

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

    C

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