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

B0028N4E03

CAUTION / NOTICE / HINT

Note


  • w/ Door Control Battery:

    As the door control battery is installed between the vehicle battery and body ECU, first perform the inspections to confirm that there are no malfunctions in the power source circuit for the body ECU before performing this troubleshooting procedure.

    Click here

  • w/ Automatic Light Control System:

    If the body ECU has been replaced, it is necessary to initialize the body ECU.

    Click here

PROCEDURE


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


    1. Remove the engine hood courtesy switch (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

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


    1. Disconnect the A34 engine hood courtesy switch (hood lock assembly) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A34-2 - 2D-12 Always Below 1 Ω
      A34-2 - Body ground Always 10 kΩ or higher
      2D-12 - Body ground Always 10 kΩ or higher
      A34-1 - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the body ECU.


    2. Disconnect the instrument panel junction block assembly connector.

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

      B00284RC16
      *a Component without harness connected (Instrument Panel Junction Block Assembly) - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-12 - A-20 (HCTY) Always Below 1 Ω
      Result
      Proceed to
      OK (for LHD)
      OK (for RHD)
      NG (for LHD)
      NG (for RHD)

    OK (for LHD)

    REPLACE BODY ECU Click here

    OK (for RHD)

    REPLACE BODY ECU Click here

    NG (for LHD)

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    NG (for RHD)

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here