ENGINE IMMOBILISER SYSTEM Security Indicator Light Circuit

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

A01NHZBE06

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Active Test.

    5. Perform the Active Test according to the display on the intelligent tester.

      Entry & Start (Certification ECU (Smart Key ECU Assembly))
      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 intelligent tester.

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - RADIO RECEIVER ASSEMBLY) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - RADIO RECEIVER ASSEMBLY)


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

    2. A01NCSBE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))
      *2

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F58-2 (IND) - G8-7 (LP) Always Below 1 Ω
      F58-2 (IND) - Body ground Always 10 kΩ or higher
      G8-7 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - BODY GROUND)


    1. A01NEHWE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-9 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here