THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

DTC Code DTC Name
Engine Hood Courtesy Switch Circuit

DESCRIPTION

  • The security 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

B240857E02

INSPECTION PROCEDURE

PROCEDURE

  1. READ VALUE USING INTELLIGENT TESTER (SECURITY COURTESY SWITCH)

    1. Using the intelligent tester, read the Data List.

      Click here

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Hood Courtesy SW

      Security courtesy switch

      ON or OFF

      ON: Engine hood open

      OFF: Engine hood closed

      -

      OK

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

      Result

      Result

      OK

      NG
    NG

    INSPECT SECURITY COURTESY SWITCHClick here

    OK

  2. INSPECT SECURITY COURTESY SWITCH

    1. B238373N03

      Remove the security courtesy switch.

      Click hereClick here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      2 (HWM+) - 3 (HWM-)

      Always

      Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPLACE SECURITY COURTESY SWITCH

    Click hereClick here

    OK

  3. CHECK HARNESS AND CONNECTOR (SECURITY COURTESY SWITCH - MAIN BODY ECU AND BODY GROUND)

    1. Disconnect the A24 switch connector.

    2. Disconnect the G47 ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A24-2 (HWM+) - G47-12 (HD2)

      Always

      Below 1 Ω

      A24-3 (HWM-) - Body ground

      Always

      Below 1 Ω

      A24-2 (HWM+) or G47-12 (HD2) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT SECURITY COURTESY SWITCH

    1. B238373N04

      Remove the security courtesy switch.

      Click hereClick here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 (+) - 4 (E)

      Unlock position

      Below 1 Ω

      1 (+) - 4 (E)

      Lock position

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPLACE SECURITY COURTESY SWITCH

    Click hereClick here

    OK

  5. CHECK HARNESS AND CONNECTOR (SECURITY COURTESY SWITCH - MAIN BODY ECU AND BODY GROUND)

    1. Disconnect the A24 switch connector.

    2. Remove the main body ECU.

      Click hereClick here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A24-1 (+) - A-20 (HCTY)

      Always

      Below 1 Ω

      A24-4 (E) - Body ground

      Always

      Below 1 Ω

      A24-1 (+) or A-20 (HCTY) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR