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Home >> Lexus >> 2022 >> LX 600 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Stop And Start System - Diagnostic Codes (2 Of 2) & Circuit Tests >> Stop And Start System >> Engine Hood Courtesy Switch Circuit [12/2021 - ] >> Procedure
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Engine Hood Courtesy Switch Circuit [12/2021 - ]: Procedure

  1. READ VALUE USING GTS (HOOD COURTESY SWITCH) 
    NOTE:

    Before performing this step, check that the engine hood can be opened by pulling the hood lock control cable.

    1. Enter the following menus: Powertrain / Stop and Start / Data List / Hood Courtesy Switch.

      Powertrain > Stop and Start > Data List 

      Tester Display
      Hood Courtesy Switch
    2. According to the display on the GTS, read the Data List.

      OK

      GTS Display Condition Normal Condition
      Hood Courtesy Switch Engine hood closed ON
      Engine hood open OFF

      Result

      Result
      OK
      NG

    Result: 

    OK 

    CHECK AND ADJUST HOOD LOCK ASSEMBLY FITTING (ADJUST HOOD). Refer to  ADJUSTMENT [12/2021 - ] 

    Result: 

    NG 

    See step  2

  2. INSPECT ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) 
    1. Inspect the engine hood courtesy switch (hood lock assembly).

      Refer to INSPECTION [12/2021 - ]

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPLACE ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY). Refer to  REMOVAL [12/2021 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND) 
    1. Disconnect the engine hood courtesy switch (hood lock assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B36-1 (E) - Body ground Always Below 1 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)) 
    1. Disconnect the engine stop and start ECU connector.
    2. Disconnect the engine hood courtesy switch (hood lock assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B38-7 (BNT1) - B36-2 (+) Always Below 1 Ω
      B38-7 (BNT1) - Body ground Always 10 kΩ or higher
      B36-2 (+) - Body ground Always 10 kΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    CHECK AND ADJUST HOOD LOCK ASSEMBLY FITTING (ADJUST HOOD). Refer to  ADJUSTMENT [12/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR