ENGINE IMMOBILISER SYSTEM(w/ Entry and Start System) Security Indicator Light Circuit

DTC Code DTC Name
Security Indicator Light Circuit

DESCRIPTION

  • When the engine immobiliser system is set, the security indicator flashes continuously, but does not illuminate if the engine immobiliser system is not set.

WIRING DIAGRAM

B229205E18

PROCEDURE

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

    1. Check that the security indicator light illuminates when operating it with the Active Test (Click here).

      Table 1. Entry&Start

      Tester Display

      Test Part

      Control Range

      Diagnostic Note

      Security Indicator

      Security indicator

      ON/OFF

      -

      OK

      Security indicator illuminates.

    REPLACE CERTIFICATION ECU

  2. INSPECT TELLTALE LIGHT ASSEMBLY

    1. E293222E02

      Remove the telltale light assembly (Click here).

    2. Connect the positive (+) lead from the battery to terminal 14 and the negative (-) lead to terminal 15, and check that the security indicator illuminates.

      OK

      Security indicator illuminates.

    REPLACE TELLTALE LIGHT ASSEMBLY

    (Click here)

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

    1. U124122E02

      Disconnect the H122 light connector.

    2. Disconnect the H51 ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H122-14 (LP) - H51-2 (IND)

      Always

      Below 1 Ω

      H122-15 (E) - Body ground

      Always

      Below 1 Ω

      H122-14 (LP) or H51-2 (IND) - Body ground

      Always

      10 kΩ or higher
    Table 2. Text in Illustration

    *1

    Front view of wire harness connector

    (to Telltale Light Assembly)

    *2

    Front view of wire harness connector

    (to Certification ECU)

    REPLACE CERTIFICATION ECU

    REPAIR OR REPLACE HARNESS OR CONNECTOR