CAN COMMUNICATION SYSTEM, Diagnostic DTC:U0130

DTC Code DTC Name
U0130 Lost Communication with VGRS

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0130 Lost Communication with VGRS Communication stop occurs between the front steering control ECU and ECU or sensor outputs DTC(s)

  • Front steering control ECU (w/ Dynamic Rear Steering System)

  • Absorber control ECU

  • Suspension control ECU (w/ Air Suspension System)

  • Front steering control ECU CAN branch wire or connector

  • Absorber control ECU CAN branch wire or connector

  • Suspension control ECU CAN branch wire or connector (w/ Air Suspension System)

  • Rear steering control ECU (w/ Dynamic Rear Steering System)

  • Rack and pinion power steering gear assembly

  • Skid control ECU assembly

  • Absorber control ECU

  • Suspension control ECU (w/ Air Suspension System)

WIRING DIAGRAM

B004WQ8E05

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Note


  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

    Click here

  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

  • Some parts must be initialized and set when replacing or removing and installing parts.

    Click here

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the power switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here

Tech Tips


  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE


  1. CHECK FOR DTCs


    1. Check for DTCs.

      Result
      Result Proceed to
      DTC U0130 is output from absorber control ECU (AVS ECU) only. A
      DTC U0130 is output from suspension control ECU only. B
      DTC U0130 is output from any ECU. C

    B

    CHECK FOR OPEN IN CAN BUS WIRE (SUSPENTION CONTROL ECU BRANCH WIRE) Click here

    C

    CHECK FOR OPEN IN CAN BUS WIRE (FRONT STEERING CONTROL ECU BRANCH WIRE) Click here

    A

  2. CHECK FOR OPEN IN CAN BUS WIRE (ABSORBER CONTROL ECU BRANCH WIRE)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L46 absorber control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L46-19 (CA2H) - L46-18 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ABSORBER CONTROL ECU (AVS ECU) Click here

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR

  3. CHECK FOR OPEN IN CAN BUS WIRE (SUSPENTION CONTROL ECU BRANCH WIRE)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L105 suspension control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L105-22 (CA2H) - L105-21 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SUSPENSION CONTROL ECU Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (SUSPENTION CONTROL ECU)

  4. CHECK FOR OPEN IN CAN BUS WIRE (FRONT STEERING CONTROL ECU BRANCH WIRE)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the G79 front steering control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G79-2 (CNH2) - G79-8 (CNL2) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT STEERING CONTROL ECU Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (FRONT STEERING CONTROL ECU)