THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DTC Code DTC Name
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

B341516E04

CAUTION / NOTICE / HINT

Note:

When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

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. 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

      Hood Courtesy SW

      Engine hood courtesy switch

      ON or OFF

      ON: Engine hood open

      OFF: Engine hood closed

      -

      Body Electrical > Main Body > Data List

      Tester Display

      Hood Courtesy SW

      OK

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

    Result

    Proceed to

    OK (for LHD)

    OK (for RHD)

    NG
    OK (for LHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    OK (for RHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (HOOD LOCK ASSEMBLY [ENGINE HOOD COURTESY SWITCH] - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

    1. Disconnect the A59*1 or A50*2 hood lock assembly (engine hood courtesy switch) connector.

      • *1: Gasoline

      • *2: Diesel

    2. Disconnect the G79 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance

      Table 1. for Gasoline, w/ Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A59-2 (+) - G79-5 (HCTY)

      Always

      Below 1 Ω

      A59-2 (+) - Body ground

      Always

      10 kΩ or higher

      G79-5 (HCTY) - Body ground

      Always

      10 kΩ or higher
      Table 2. for Gasoline, w/o Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A59-1 (+) - G79-5 (HCTY)

      Always

      Below 1 Ω

      A59-1 (+) - Body ground

      Always

      10 kΩ or higher

      G79-5 (HCTY) - Body ground

      Always

      10 kΩ or higher
      Table 3. for Diesel, w/ Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A50-2 (+) - G79-5 (HCTY)

      Always

      Below 1 Ω

      A50-2 (+) - Body ground

      Always

      10 kΩ or higher

      G79-5 (HCTY) - Body ground

      Always

      10 kΩ or higher
      Table 4. for Diesel, w/o Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A50-1 (+) - G79-5 (HCTY)

      Always

      Below 1 Ω

      A50-1 (+) - Body ground

      Always

      10 kΩ or higher

      G79-5 (HCTY) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (HOOD LOCK ASSEMBLY [ENGINE HOOD COURTESY SWITCH] - BODY GROUND)

    1. Disconnect the A59*1 or A50*2 hood lock assembly (engine hood courtesy switch) connector.

      • *1: Gasoline

      • *2: Diesel

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

      Standard Resistance

      Table 5. for Gasoline, w/ Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A59-1 (E) - Body ground

      Always

      Below 1 Ω
      Table 6. for Gasoline, w/o Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A59-2 (E) - Body ground

      Always

      Below 1 Ω
      Table 7. for Diesel, w/ Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A50-1 (E) - Body ground

      Always

      Below 1 Ω
      Table 8. for Diesel, w/o Stop and Start System:

      Tester Connection

      Condition

      Specified Condition

      A50-2 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Remove the hood lock assembly (engine hood courtesy switch).

      Click here

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

      Click here

    Result

    Proceed to

    OK (for LHD)

    OK (for RHD)

    NG
    OK (for LHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    OK (for RHD)

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    NG

    REPLACE HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH)

    Click here