THEFT DETERRENT SYSTEM (w/o Smart Entry and Start System) Ignition Switch Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) determines the ignition switch position (OFF, ACC, ON) based on signals from the IG or ACC circuit.

WIRING DIAGRAM

A01EKVOE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Select the items below in the Data List and read the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      IG SW Ignition switch ON signal/ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch off

      		 -
      ACC SW Ignition switch ACC signal/ON or OFF

      ON: Ignition switch ACC

      OFF: Ignition switch off

      		 -
      OK
      When the ignition switch is operated, the display changes as shown in the table.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (BATTERY - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)


    1. A01EKUWE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Driver Side Junction Block Assembly)

      Disconnect the 2A driver side junction block assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2A-1 - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT IGNITION SWITCH ASSEMBLY


    1. A01ELNZE07
      Text in Illustration
      *1

      Component without harness connected

      (Ignition Switch Assembly)
      *2 No Pin
      *3 LOCK
      *4 ACC
      *5 ON
      *6 START

      Remove the ignition switch assembly Click here.

    2. Disconnect the D12 ignition switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D12-4 (IG1) - D12-2 (AM1) Ignition switch ON Below 1 Ω
      D12-3 (ACC) - D12-2 (AM1) Ignition switch ACC Below 1 Ω

    NG

    REPLACE IGNITION SWITCH ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (DRIVER SIDE J/B - DRIVER SIDE J/B)


    1. A01EMSSE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Driver Side Junction Block Assembly)

      Disconnect the 2G driver side junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2G-10 - 2G-29 Ignition switch ON Below 1 Ω
      2G-10 - 2G-9 Ignition switch ACC Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND)


    1. A01EM0JE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Driver Side Junction Block Assembly)

      Disconnect the 2F driver side junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2F-16 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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