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Home >> Lexus >> 2022 >> LS 500 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) - Diagnostic Codes (3 Of 3), Symptom Tests & Circuit Tests (1 Of 2) >> Lighting System >> DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Missing Message [09/2018 - 10/2020] >> Procedure

DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Missing Message [09/2018 - 10/2020]: Procedure

  1. CHECK VEHICLE TYPE 
    1. Check the vehicle type.

      Result

      Result Proceed to
      w/ AFS (Front-lighting Adaptive System) A
      w/o AFS (Front-lighting Adaptive System) B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  2

  2. CHECK CAN BUS WIRE (OBJECT RECOGNITION CAMERA MAIN WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the N5 object recognition camera connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N5-8 (CA4P) - N5-9 (CA4N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      N5-8 (CA4P) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      N5-9 (CA4N) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      N5-8 (CA4P) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      N5-9 (CA4N) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  3

  3. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    1. Temporarily replace the millimeter wave radar sensor assembly with a new one.

      Refer to REMOVAL [09/2018 - 10/2020]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs 

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

      OK

      DTC U0235-87 is not output.

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE OBJECT RECOGNITION CAMERA. Refer to  REMOVAL [09/2018 - 10/2020] 

  4. CHECK CAN BUS WIRE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY MAIN WIRE) 
    1. Disconnect the C6 millimeter wave radar sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C6-5 (CA1P) - C6-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      C6-5 (CA1P) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      C6-6 (CA1N) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      C6-5 (CA1P) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      C6-6 (CA1N) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    1. Temporarily replace the millimeter wave radar sensor assembly with a new one.

      Refer to REMOVAL [09/2018 - 10/2020]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs 

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

      OK

      DTC U0235-87 is not output.

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE OBJECT RECOGNITION CAMERA. Refer to  REMOVAL [09/2018 - 10/2020] 

  6. CHECK CAN BUS WIRE (FORWARD RECOGNITION CAMERA MAIN WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the N5 forward recognition camera connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N5-8 (CA4P) - N5-9 (CA4N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      N5-8 (CA4P) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      N5-9 (CA4N) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      N5-8 (CA4P) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      N5-9 (CA4N) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  7

  7. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    1. Temporarily replace the millimeter wave radar sensor assembly with a new one.

      Refer to REMOVAL [09/2018 - 10/2020]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs 

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

      OK

      DTC U0235-87 is not output.

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [09/2018 - 10/2020] 

  8. CHECK CAN BUS WIRE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY MAIN WIRE) 
    1. Disconnect the C6 millimeter wave radar sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C6-5 (CA1P) - C6-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      C6-5 (CA1P) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      C6-6 (CA1N) - G112-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      C6-5 (CA1P) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      C6-6 (CA1N) - G112-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    1. Temporarily replace the millimeter wave radar sensor assembly with a new one.

      Refer to REMOVAL [09/2018 - 10/2020]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs 

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2018 - 10/2020]

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

      OK

      DTC U0235-87 is not output.

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [09/2018 - 10/2020] 

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