THEFT DETERRENT SYSTEM (w/ Intrusion Sensor) 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 (multiplex network body ECU) causes the security indicator to come on only during the arming preparation and alarm sounding states.

WIRING DIAGRAM

A01NHTXE02

INSPECTION PROCEDURE

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. 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 intelligent tester.

    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. Disconnect the 2D instrument panel junction block assembly and A main body ECU (multiplex network body ECU) connectors.

      A01NCR7E01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-35 - A-23 (IND) Always Below 1 Ω
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 *2

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY (SECURITY INDICATOR) - MAIN BODY ECU)


    1. Reconnect the 2D instrument panel junction block assembly connector.

      A01NFAPE02

    2. Disconnect the G8 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-7 (LP) - A-23 (IND) Always Below 1 Ω
      G8-7 (LP) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly (Security Indicator Light))

      		 *2

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY (SECURITY INDICATOR) - BODY GROUND)


    1. A01NEHWE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly (Security Indicator Light))

      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

  5. INSPECT RADIO RECEIVER ASSEMBLY (SECURITY INDICATOR LIGHT)


    1. A01NDRHE01
      Text in Illustration
      *1

      Component with harness connected

      (Radio Receiver Assembly (Security Indicator Light))

      Reconnect the G8 radio receiver assembly connector with the A main body 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.

      Standard
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal G8-7 (LP)

      Battery negative (-) → Terminal G8-9 (GND)

      		 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 RADIO RECEIVER ASSEMBLY (SECURITY INDICATOR LIGHT) Click here

    OK

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