DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0235

DTC Code DTC Name
U0235 Lost Communication with Cruise Control Front Distance Range Sensor

DESCRIPTION

The millimeter wave radar sensor and driving support ECU assembly transmit the data for general vehicle control and diagnosis function via CAN communication. The millimeter wave radar sensor assembly transmits information about the vehicle in front to the driving support ECU assembly.

DTC No. DTC Detection Condition Trouble Area
U0235 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between millimeter wave radar sensor and driving support ECU assembly stops for 1 second or more

  • Millimeter wave radar sensor assembly

  • Millimeter wave radar sensor circuit

  • Driving support ECU assembly

WIRING DIAGRAM

A000472E14

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Select "CAN Bus Check" from the "System Selection Menu" screen on the GTS.

    4. Select "Communication Malfunction DTC" from the "CAN Bus Check" screen, and then select "Enter".

      OK
      Communication system is normal.

    5. Turn the power switch off.


    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR POWER SOURCE)


    1. A0005RZE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the A55 millimeter wave radar sensor assembly connector.

    2. Turn the power switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A55-5 (IGB) - Body ground Power switch on (IG) 11 to 14 V

    4. Reconnect the A55 millimeter wave radar sensor assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - BODY GROUND)


    1. Disconnect the A55 millimeter wave radar sensor assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A55-2 (SGND) - Body ground Always Below 1 Ω
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

    3. Reconnect the A55 millimeter wave radar sensor assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

    Click here


    NEXT

  5. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

    Click here


    NEXT

  6. CHECK FOR DTCs (DTC U0235)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the cruise control switch on.

      3. Push the -SET switch to activate the cruise control.

    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

    6. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC U0235 is output (for LHD) B
      DTC U0235 is output (for RHD) C

    7. Turn the power switch off.


    A

    END

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    C

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here