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

DESCRIPTION


WIRING DIAGRAM

A01X87HE04

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • When replacing the transponder key ECU assembly, refer to Registration.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC is not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SECURITY INDICATOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Immobiliser / Active Test.

    5. According to the display on the intelligent tester, perform the Active Test.

      Immobiliser
      Tester Display Test Part Control Range Diagnostic Note
      Security Indicator Security indicator light ON/OFF -
      OK
      Security indicator light can be turned on and off using the intelligent tester.

    NG

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

    OK

  3. READ VALUE USING INTELLIGENT TESTER (ENGINE IMMOBILISER SYSTEM STATUS)


    1. Turn the ignition switch off.

      Tech Tips

      When using the intelligent tester with the ignition switch off to troubleshoot: Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds until communication between the intelligent tester and vehicle begins.

    2. Using the intelligent tester, read the Data List Click here.

      Immobiliser
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser Immobiliser system status / Set or Unset

      Set: No key in ignition key cylinder, or 20 sec. elapsed after turning the ignition switch to ACC or off

      Unset: Key in ignition key cylinder

      		 -

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

    CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - BATTERY AND BODYGROUND) Click here

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


    1. Disconnect the E96 transponder key ECU assembly connector.

    2. Disconnect the g2 clock assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E96-8 (IND) - g2-3 (LP) Always Below 1 Ω
      g2-8 (E) - Body ground Always Below 1 Ω
      g2-3 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE CLOCK ASSEMBLY (SECURITY INDICATOR LIGHT)


    1. Temporarily replace the clock assembly (security indicator light) with a new or normally functioning 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.

    OK

    END (CLOCK ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

  6. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - BATTERY AND BODYGROUND)


    1. Disconnect the E96 transponder key ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E96-5 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E96-1 (+B) - Body ground Always 11 to 14 V
      E96-2 (IG) - Body ground Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR