LIGHTING SYSTEM Ignition Key Cylinder Light Circuit

DESCRIPTION

The main body ECU (network gateway ECU) controls the operation of the transponder key amplifier (ignition key cylinder light).

WIRING DIAGRAM

A004JDFE03
*a from Battery
*b DOME
*c Transponder Key Amplifier
*d Main Body ECU (Network Gateway ECU)

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Active Test.

    5. Check that the light operate.

      ON
      Ignition key cylinder light comes on
      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Key Ring Light Ignition key cylinder light ON/OFF -

    OK

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

    NG

  2. INSPECT TRANSPONDER KEY AMPLIFIER


    1. Remove the transponder key amplifier Click here.

    2. Inspect the transponder key amplifier Click here.

      OK
      Transponder key amplifier is normal.

    NG

    REPLACE TRANSPONDER KEY AMPLIFIER Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - BATTERY)


    1. Disconnect the D54 transponder key amplifier connector.

    2. A004JZME01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to transponder key amplifier)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D54-2 (ILL+) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - MAIN BODY ECU (NETWORK GATEWAY ECU))


    1. Disconnect the D54 transponder key amplifier connector.

    2. Disconnect the D5 main body ECU (network gateway ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D54-6 (ILL-) - D5-28 (ILL) Always Below 1 Ω
      D5-28 (ILL) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR