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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Parking Support Alert System (Hybrid) - Diagnostic Codes & Circuit Tests) >> PARKING SUPPORT ALERT SYSTEM (for HV Model) >> No. 2 Clearance Warning Buzzer Circuit [06/2018 - 09/2022] >> Procedure

No. 2 Clearance Warning Buzzer Circuit [06/2018 - 09/2022]: Procedure

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  1. PERFORM ACTIVE TEST USING TECHSTREAM (REAR BUZZER) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test.
    5. Check that the rear buzzer operates by performing the Active Test.

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Rear Buzzer No. 2 clearance warning buzzer Stop or Operate Confirm that the vehicle is stopped and the power switch is on (IG)

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test 

      Tester Display
      Rear Buzzer

      OK

      The No. 2 clearance warning buzzer sounds.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 08/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2021 - 09/2022] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 2 CLEARANCE WARNING BUZZER) 
    1. Disconnect the N41 clearance warning ECU assembly connector.
    2. Disconnect the N3 No. 2 clearance warning buzzer connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N41-15 (BBZ) - N3-1 (Z+) Always Below 1 Ω
      N41-16 (ER) - N3-2 (Z-) Always Below 1 Ω
      N41-15 (BBZ) or N3-1 (Z+) - Body ground Always 10 kΩ or higher
      N41-16 (ER) or N3-2 (Z-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. REPLACE NO. 2 CLEARANCE WARNING BUZZER 
    1. Replace the No. 2 clearance warning buzzer with a new or known good one.

      Refer to REMOVAL [06/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. PERFORM ACTIVE TEST USING TECHSTREAM (REAR BUZZER) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test.
    5. Check that the rear buzzer operates by performing the Active Test.

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Rear Buzzer No. 2 clearance warning buzzer Stop or Operate Confirm that the vehicle is stopped and the engine is on (IG)

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test 

      Tester Display
      Rear Buzzer

      OK

      The No. 2 clearance warning buzzer sounds.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (NO. 2 CLEARANCE WARNING BUZZER WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022] 

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