THEFT DETERRENT SYSTEM (w/ Smart Entry and Start System) Security Indicator Light Circuit

DESCRIPTION

Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.

The main body ECU (driver side junction block assembly) causes the security indicator to come on only during the arming preparation and alarm sounding states.

WIRING DIAGRAM

A01ELV4E01

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Select the item below in the Active Test and then check that the indicator operates.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Security Indicator Security indicator ON / OFF -
      OK
      The security indicator light flashes and goes off correctly when operated through the GTS.

    NG

    CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - MAIN BODY ECU) Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - MAIN BODY ECU)


    1. A01EK2GE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      Disconnect the D51 main body ECU (driver side junction block assembly) connector.

    2. Disconnect the F2 accessory meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D51-4 (IND) - F2-2 (SEC) Always Below 1 Ω
      D51-4 (IND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01ELZ6E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Accessory Meter Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F2-12 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT ACCESSORY METER ASSEMBLY (SECURITY INDICATOR LIGHT)


    1. A01EM5SE01
      Text in Illustration
      *1

      Component with harness connected

      (Accessory Meter Assembly)

      Reconnect the F2 accessory meter assembly connector with the D51 ECU connector still disconnected.

    2. Apply battery voltage from the wire harness back side between the specified terminals of the indicator, and check the lighting condition of the security indicator.

      OK
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal F2-2 (SEC)

      Battery negative (-) → Terminal F2-12 (E)

      		 Security indicator comes on

      Note


      • If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator will not come on.

      • Voltage of more than 12 V will damage the security indicator.

      • If the voltage is too low, the security indicator will not come on.


    NG

    REPLACE ACCESSORY METER ASSEMBLY Click here

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here