CAN COMMUNICATION SYSTEM, Diagnostic DTC:U1119

DTC Code DTC Name
U1119 Lost Communication with Object Recognition ECU (CAN)

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U1119 There is no communication from the lane recognition camera sensor assembly.

  • Power source or inside of lane recognition camera sensor assembly

  • Lane recognition camera sensor assembly CAN branch wire or connector

  • Lane recognition camera sensor assembly

WIRING DIAGRAM

A004PUSE08
*a No. 6 Junction Connector
*b ECU-IG NO.1
*c from IG1 Relay
*d Lane Recognition Camera Sensor Assembly

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedures.

Tech Tips

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. PRECAUTION

    Note

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.


    NEXT

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.


    NEXT

  3. CHECK FOR OPEN IN CAN BUS WIRE (LANE RECOGNITION CAMERA SENSOR ASSEMBLY CAN BRANCH WIRE)


    1. A004PS8E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Lane Recognition Camera Sensor Assembly)

      Disconnect the K10 lane recognition camera sensor assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      K10-1 (CA1P) - K10-2 (CA1N) Ignition switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CA1P, CA1N)

    OK

  4. CHECK HARNESS AND CONNECTOR (LANE RECOGNITION CAMERA SENSOR ASSEMBLY - BATTERY AND BODY GROUND)


    1. A004OPOE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Lane Recognition Camera Sensor Assembly)

      Connect the cable to the negative (-) battery terminal.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K10-8 (IGB) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K10-4 (GND) - Body ground Always Below 1 Ω

    OK

    REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR