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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Panoramic View Monitor System (Except Hybrid) - Diagnostic Codes & Symptom Tests) >> PANORAMIC VIEW MONITOR SYSTEM (for Gasoline Model) >> "CHK" message(s) are displayed on the SIGNAL CHECK screen. [08/2021 - 09/2022] >> Procedure

"CHK" message(s) are displayed on the SIGNAL CHECK screen. [08/2021 - 09/2022]: Procedure

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  1. CHECK DISPLAY CHECK MODE 
    1. Check which items display on the signal check screen.
      GTY798248Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result

      Result Proceed to
      "CAMERA SW" displays "CHK" (red) A
      "CAN" displays "CHK" (red) B
      "SHIFT" displays "CHK" (red) C

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSIS SYSTEM [08/2021 - 09/2022] 

    Result: 

    C 

    See step  4

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (PANORAMIC VIEW MONITOR SWITCH - PARKING ASSIST ECU AND BODY GROUND) 
    1. Disconnect the G32 panoramic view monitor switch connector.
    2. Disconnect the N44 parking assist ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N44-15 (BLSW) - G32-6 (ECU) Always Below 1 Ω
      G32-18 (E) - Body ground Always Below 1 Ω
      N44-15 (BLSW) or G32-6 (ECU) - 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. INSPECT PANORAMIC VIEW MONITOR SWITCH 
    1. Remove the panoramic view monitor switch.

      Refer to REMOVAL [08/2021 - ]

    2. Inspect the panoramic view monitor switch.

      Refer to INSPECTION [08/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING ASSIST ECU. Refer to  REMOVAL [06/2018 - 09/2022] 

    Result: 

    NG 

    REPLACE PANORAMIC VIEW MONITOR SWITCH. Refer to  REMOVAL [08/2021 - ] 

  4. CHECK BACK-UP LIGHT 
    1. Check that the back-up light comes on.

      OK

      The back-up light comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO LIGHTING SYSTEM (EXT). Refer to  PROBLEM SYMPTOMS TABLE [08/2021 - ] 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL) 
    1. Disconnect the N44 parking assist ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      N44-14 (REV) - Body ground Engine switch on (IG), shift lever in R 11 to 14 V
      N44-14 (REV) - Body ground Engine switch on (IG), shift lever not in R Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING ASSIST ECU. Refer to  REMOVAL [06/2018 - 09/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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