LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2018 >> ES 300h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Front Recognition Camera System (Diagnostic Codes & Circuit Tests) >> Front Recognition Camera System >> DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U1104: Lost Communication with Driving Support ECU [07/2015 - ] >> Procedure

DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U1104: Lost Communication with Driving Support ECU [07/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    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 / Pre-Collision 2 / Trouble Codes.
    5. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

      Result Proceed to
      DTC U1002 is not output A
      DTC U1002 is output B
    6. Turn the power switch off.

    Result:  B

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ]

    Result:  A

    A 

    See step  2

  2. CHECK FOR SHORT IN SUB BUS LINE 
    1. Disconnect the T12 forward recognition camera connector.
      GTY644612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T12-6 (CANH) - T12-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Forward Recognition Camera)

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (CAN BUS LINE) 

    Result:  OK

    OK 

    See step  3

  3. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.
    5. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

      Result Proceed to
      DTC U0235 and U1104 are output A
      Only DTC U1104 is output B
      Only DTC U0235 is output C

    Result:  B

    B 

    See step  6

    Result:  C

    C 

    See step  9

    Result:  A

    A 

    See step  4

  4. CHECK POWER SOURCE CIRCUIT (DRIVING SUPPORT ECU ASSEMBLY) 
    1. Disconnect the H182 driving support ECU assembly connector.
      GTY674263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Driving Support ECU Assembly)
    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
      H182-7 (B) - Body ground Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H182-28 (GND) - Body ground Always Below 1 Ω
    6. Reconnect the H182 driving support ECU assembly connector.

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    Result:  OK

    OK 

    See step  5

  5. CHECK POWER SOURCE CIRCUIT (MILLIMETER WAVE RADAR SENSOR ASSEMBLY) 
    1. Disconnect the A75 millimeter wave radar sensor assembly connector.
      GTY630870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Millimeter Wave Radar Sensor Assembly)
    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
      A75-8 (IGB) - Body ground Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A75-1 (SGND) - Body ground Always Below 1 Ω

    Result:  OK

    OK 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to COMPONENTS [07/2015 - ]

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

  6. CHECK POWER SOURCE CIRCUIT (DRIVING SUPPORT ECU ASSEMBLY) 
    1. Disconnect the H182 driving support ECU assembly connector.
      GTY674263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Driving Support ECU Assembly)
    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
      H182-7 (B) - Body ground Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H182-28 (GND) - Body ground Always Below 1 Ω
    6. Reconnect the H182 driving support ECU assembly connector.

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    Result:  OK

    OK 

    See step  7

  7. REPLACE DRIVING SUPPORT ECU ASSEMBLY 
    1. Replace the driving support ECU assembly. Refer to REMOVAL [07/2015 - ]

    Result:  NEXT

    NEXT 

    See step  8

  8. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.
    5. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]
    6. Make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the system cannot detect the malfunction.

    7. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

      Result Proceed to
      DTC U1104 is not output A
      DTC U1104 is output B

    Result:  A

    A 

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE) 

    Result:  B

    B 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to COMPONENTS [07/2015 - ]

  9. CHECK POWER SOURCE CIRCUIT (MILLIMETER WAVE RADAR SENSOR ASSEMBLY) 
    1. Disconnect the A75 millimeter wave radar sensor assembly connector.
      GTY630870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Millimeter Wave Radar Sensor Assembly)
    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
      A75-8 (IGB) - Body ground Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A75-1 (SGND) - Body ground Always Below 1 Ω

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    Result:  OK

    OK 

    See step  10

  10. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    1. Replace the millimeter wave radar sensor assembly. Refer to REMOVAL [07/2015 - ]
    2. Adjust the millimeter wave radar sensor assembly. Refer to ADJUSTMENT [07/2015 - ]

    Result:  NEXT

    NEXT 

    See step  11

  11. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.
    5. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]
    6. Make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the system cannot detect the malfunction.

    7. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

      Result Proceed to
      DTC U0235 is not output A
      DTC U0235 is output B

    Result:  A

    A 

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) 

    Result:  B

    B 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to COMPONENTS [07/2015 - ]

scientia non olet · About LEMON Manuals