THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01CFRQE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry&Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry&Start (Certification ECU (Smart Key ECU Assembly))
      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
      ON or OFF appears on the tester screen according to the engine hood courtesy switch condition.

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND, CERTIFICATION ECU) Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND, CERTIFICATION ECU)


    1. Disconnect the B20 engine hood courtesy switch connector.

    2. Disconnect the G78 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B20-2 - G78-24 (HSW) Always Below 1 Ω
      B20-2 - Body ground Always 10 kΩ or higher
      B20-1 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT ENGINE HOOD COURTESY SWITCH


    1. A01CB6PE04
      Text in Illustration
      *a

      Component without harness connected

      (Engine Hood Courtesy Switch)
      *1 Free (ON)
      *2 Pushed (OFF)

      Remove the engine hood courtesy switch from the hood lock Click here.

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

      Standard Resistance
      Tester Connection Switch Position Specified Condition
      1 - 2 Free (ON) Below 1 Ω
      Pushed (OFF) 10 kΩ or higher

    NG

    REPLACE ENGINE HOOD COURTESY SWITCH Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)