THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DESCRIPTION

The engine hood courtesy switch is built into the hood lock assembly. This switch turns on when the engine hood is closed and turns off when the engine hood is opened.

WIRING DIAGRAM

B006XVLE09

CAUTION / NOTICE / HINT

Note


  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.*


    • *: w/ Smart Entry and Start System

  • The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before performing this troubleshooting procedure, make sure to perform an on-vehicle inspection to confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*

    Click here


    • *: w/ Door Control Battery

PROCEDURE


  1. READ VALUE USING GTS (HOOD COURTESY 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. Read the Data List according to the display on the GTS.


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Hood Courtesy SW Engine hood courtesy switch OFF or ON

      OFF: Engine hood closed

      ON: Engine hood open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Hood Courtesy SW
      OK
      The GTS display changes correctly in response to the engine hood courtesy switch (hood lock assembly) status.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)


    1. Remove the hood lock assembly.

      Click here

    2. Inspect the engine hood courtesy switch (hood lock assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND)


    1. Disconnect the K52 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
      K52-30 (HCTY) - A15-1 (+) Always Below 1 Ω
      K52-30 (HCTY) or A15-1 (+) - Other terminals and body ground Always 10 kΩ or higher
      A15-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR