THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DESCRIPTION

The engine hood courtesy switch is installed together with the hood lock. This switch turns on when the engine hood is closed and turns off when the engine hood is opened.

WIRING DIAGRAM

A01HZQIE09

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
      Hood Courtesy SW Engine hood courtesy switch/ON or OFF

      ON: Engine hood closed

      OFF: Engine hood open

      		 -
      OK
      The indicator on the Techstream switches between ON and OFF in accordance with the engine hood courtesy switch (hood lock assembly) status.

    NG

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

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

  2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the main body ECU (multiplex network body ECU) Click here.

      A01HZNME20
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

    2. Disconnect the 3D instrument panel junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-25 - MB-20 (HCTY) Always Below 1 Ω

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

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


    1. A01I1LKE01
      Text in Illustration
      *1 Opened
      *2 Locked
      *a

      Component without harness connected

      (Engine Hood Courtesy Switch (Hood Lock Assembly))

      Remove the hood lock 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 Opened 10 kΩ or higher
      1 - 2 Locked Below 1 Ω

    NG

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

    OK

  4. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ENGINE HOOD COURTESY SWITCH - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A2-1 (+) - 3D-25 Always Below 1 Ω
      A2-1 (+) - Body ground Always 10 kΩ or higher
      A2-2 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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