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

A01FI76E06

INSPECTION PROCEDURE

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS (HOOD COURTESY SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    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.

      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 GTS switches between ON and OFF in accordance with the engine hood courtesy switch (hood lock assembly) status.

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - MAIN BODY ECU) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - MAIN BODY ECU)


    1. Disconnect the B10 engine hood courtesy switch (hood lock assembly) connector.

    2. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    3. Connect the cowl side junction block LH connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B10-1 (+) - A-20 (HCTY) Always Below 1 Ω
      B10-1 (+) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - ENGINE HOOD COURTESY SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND)


    1. Disconnect the B10 engine hood courtesy switch (hood lock assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B10-2 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01FE7LE01
      Text in Illustration
      *1 Opened
      *2 Locked

      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

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

  5. CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - ENGINE HOOD COURTESY SWITCH)


    1. Disconnect the 5D cowl side junction block LH connector.

    2. Disconnect the B10 engine hood courtesy switch (hood lock assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      5D-28 - B10-1 (+) Always Below 1 Ω
      5D-28 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here