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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Stop And Start System - Diagnostic Codes (3 Of 3) & Circuit Tests (1 Of 3) >> Stop And Start System >> Engine Hood Courtesy Switch Circuit [10/2022 - 11/2023] >> Procedure

Engine Hood Courtesy Switch Circuit [10/2022 - 11/2023]: 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. According to the display on the GTS, read the Data List.

      Powertrain > Stop and Start > Data List 

      Tester Display
      Hood Courtesy Switch

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK AND ADJUST HOOD LOCK ASSEMBLY FITTING (ENGINE HOOD COURTESY SWITCH) (ADJUST HOOD). Refer to  ADJUSTMENT [09/2020 - ] 

    Result: 

    NG 

    See step  2

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

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE HOOD LOCK ASSEMBLY. Refer to  REMOVAL [09/2020 - ] 

    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
      A21-2 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      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
      A34-7 (BNT1) - A21-1 (+) Always Below 1 Ω
      A34-7 (BNT1) or A21-1 (+) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK AND ADJUST HOOD LOCK ASSEMBLY FITTING (ENGINE HOOD COURTESY SWITCH) (ADJUST HOOD). Refer to  ADJUSTMENT [09/2020 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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