THEFT DETERRENT SYSTEM Security Indicator Light Circuit

DESCRIPTION

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

The main body ECU (multiplex network body ECU) causes the security indicator light to come on only during the arming preparation and alarm sounding states.

WIRING DIAGRAM

A0042IQE09

INSPECTION PROCEDURE

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. 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

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

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

  2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the main body ECU (multiplex network body ECU) Click here.

      A00414GE07

    2. Disconnect the 2A instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2A-51 - A-23 (IND) Always Below 1 Ω
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the L23 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2A-51 - L23-22 (LP) Always Below 1 Ω
      L23-22 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. 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

  5. INSPECT SECURITY INDICATOR LIGHT (COMBINATION METER ASSEMBLY)


    1. A0043X5E07
      Text in Illustration
      *a

      Component with harness connected

      (Security Indicator Light (Combination Meter Assembly))

      Remove the combination meter assembly with harness connected. Click here

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

      Standard
      Measurement Condition Specified Condition

      Auxiliary battery positive (+) → Terminal 22

      Auxiliary battery negative (-) → Terminal 30

      		 Security indicator light comes on

      Note


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

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

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


    NG

    REPLACE NO. 3 METER CIRCUIT PLATE (SECURITY INDICATOR LIGHT) Click here

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here