THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DTC Code DTC Name
Engine Hood Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

B159038E16

PROCEDURE

  1. READ VALUE USING INTELLIGENT TESTER (ENGINE HOOD COURTESY SWITCH)

    1. Using the intelligent tester, read the Data List (Click here).

      Table 1. Main Body

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      Hood Courtesy SW

      Engine hood courtesy switch /

      ON or OFF

      ON: Engine hood is open

      OFF: Engine hood is closed

      -

      OK

      ON (engine hood is open) and OFF (engine hood is closed) appear on screen according to condition of engine hood.

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

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

    1. B225325E05

      Remove the hood lock (Click here).

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 - 2

      Unlock position

      10 kΩ or higher

      1 - 2

      Lock position

      Below 1 Ω

    REPLACE HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH)

    (Click here)

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HOOD LOCK ASSEMBLY AND BODY GROUND)

    1. U122430E02

      Disconnect the H81 ECU connector.

    2. Disconnect the A44 lock connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H81-11 (HCTY) - A44-2

      Always

      Below 1 Ω

      A44-1 - Body ground

      Always

      Below 1 Ω

      H81-11 (HCTY) or A44-2 - Body ground

      Always

      10 kΩ or higher
      Table 2. Text in Illustration

      *1

      Front view of wire harness connector

      (to Main Body ECU [Instrument Panel Junction Block Assembly])

      *2

      Front view of wire harness connector

      (to Hood Lock Assembly)

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    REPAIR OR REPLACE HARNESS OR CONNECTOR