THEFT DETERRENT SYSTEM Unlock Warning Switch Circuit

DTC Code DTC Name
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

B163408E12

PROCEDURE

  1. READ VALUE USING GTS (KEY UNLOCK WARNING SW)

    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 / Data List.

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

      Body Electrical > Main Body > Data List

      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

      -

      Body Electrical > Main Body > Data List

      Tester Display

      Key Unlock Warning SW

      OK

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

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick here

    NG

  2. INSPECT UNLOCK WARNING SWITCH ASSEMBLY

    1. B289676C01

      *a

      Component without harness connected

      (Unlock Warning Switch Assembly)

      *b

      Free (key removed)

      *c

      Pushed (key set)

      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

      Condition

      Specified Condition

      1 - 2

      Free

      (Key removed)

      10 kΩ or higher

      1 - 2

      Pushed

      (Key set)

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    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 E22 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

      E22-17 (KSW) - E5-1

      Always

      Below 1 Ω

      E22-17 (KSW) - Body ground

      Always

      10 kΩ or higher

      E5-1 - Body ground

      Always

      10 kΩ or higher

      E5-2 - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR