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 engine immobiliser system. The security indicator light blinks continuously due to a continuous signal received from the engine immobiliser system while it is set or when the theft deterrent system is in the armed state.

The certification ECU (smart key ECU assembly) causes the security indicator light to come on only during the arming preparation state and alarm sounding state.

WIRING DIAGRAM

A01CFNME01

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine 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 tester.

      Entry&Start (Certification ECU (Smart Key ECU Assembly))
      Tester Display Test Part Control Range Diagnostic Note
      Security Indicator Security Indicator ON / OFF -
      OK
      The security indicator light flashes or goes off correctly when operating it through the intelligent tester.

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - COMBINATION METER ASSEMBLY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - COMBINATION METER ASSEMBLY)


    1. Disconnect the G19 combination meter assembly connector.

    2. Disconnect the G20 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G19-6 (LP) - G20-2 (IND) Always Below 1 Ω
      G19-6 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the G20 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G19-6 (LP) - Body ground Theft deterrent system is in arming preparation state 3 to 14 V

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here