ENGINE IMMOBILISER SYSTEM Security Indicator Light Does not Blink

DESCRIPTION

The security indicator light blinks continuously due to a continuous signal received from the certification ECU (smart key ECU assembly) while the engine immobiliser is set.

WIRING DIAGRAM

A0042OOE24

INSPECTION PROCEDURE

Note

If the certification ECU (smart key ECU assembly) is replaced, register all the keys.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    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
      Tester Display Test Part Control Range Diagnostic Note
      Immobiliser Indicator Security indicator light ON or OFF -
      OK
      The security indicator light turns on and off according to operation via the GTS.

    NG

    INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (SECURITY INDICATOR LIGHT SIGNAL OUTPUT) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  2. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (SECURITY INDICATOR LIGHT SIGNAL OUTPUT)


    1. Disconnect the L23 combination meter assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L23-22 (LP) - Body ground Power switch on (IG) Below 2 V
      L23-22 (LP) - Body ground Power switch off Pulse generation

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - COMBINATION METER ASSEMBLY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L23-30 (ES) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE NO. 3 METER CIRCUIT PLATE Click here

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - COMBINATION METER ASSEMBLY)


    1. Disconnect the L56 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L56-2 (IND) - L23-22 (LP) Always Below 1 Ω
      L56-2 (IND) - Body ground Always 10 kΩ or higher
      L56-22 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)