THEFT DETERRENT SYSTEM Unlock Warning Switch Circuit

DESCRIPTION

The key unlock warning switch assembly comes on when the ignition key is inserted into the ignition key cylinder and goes off when the ignition key is removed.

WIRING DIAGRAM

A01HPK2E11

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING TECHSTREAM


    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. According to the display on the Techstream, read the Data List.

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Key Unlock Warning SW Unlock warning switch/ON or OFF

      ON: Key is inserted into ignition key cylinder

      OFF: Key is removed from ignition key cylinder

      		 -
      OK
      When the key is in the ignition key cylinder, "ON" appears on the screen.

    NG

    INSPECT UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

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

  2. INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    1. A01HQERE01
      Text in Illustration
      *1 Free (key removed)
      *2 Pushed (key set)
      *a

      Component without harness connected

      (Unlock Warning Switch Assembly)

      Remove the unlock warning switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2

      Free

      (Key removed)

      		 10 kΩ or higher
      1 - 2

      Pushed

      (Key set)

      		 Below 1 Ω

    NG

    REPLACE UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - UNLOCK WARNING SWITCH - BODY GROUND)


    1. Disconnect the I13 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I13-17 (KSW) - I33-1 Always Below 1 Ω
      I13-17 (KSW) - Body ground Always 10 kΩ or higher
      I33-2 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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