ACTIVE REAR WING SYSTEM, Diagnostic DTC:U0101, U0129, U0142, U0155

DTC Code DTC Name
U0101 Lost Communication with ECM
U0129 Lost Communication with Skid Control ECU
U0142 Lost Communication with Main Body ECU
U0155 Lost Communication with Combination Meter

DESCRIPTION

These DTCs are stored when a malfunction occurs in the CAN communication system.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication with ECM

All conditions are met:


  • Engine switch on (IG)

  • ECUB terminal voltage is 10 V or more.

  • No communication with the ECM for 10 seconds or more.

  • CAN communication system

  • ECM

  • Spoiler control ECU assembly
U0129 Lost Communication with Skid Control ECU

All conditions are met:


  • Engine switch on (IG)

  • ECUB terminal voltage is 10 V or more.

  • No communication with the skid control ECU assembly for 10 seconds or more.

  • CAN communication system

  • Skid control ECU assembly

  • Spoiler control ECU assembly
U0142 Lost Communication with Main Body ECU

All conditions are met:


  • Engine switch on (IG)

  • ECUB terminal voltage is 10 V or more.

  • No communication with the main body ECU (multiplex network body ECU) for 10 seconds or more.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

  • Spoiler control ECU assembly
U0155 Lost Communication with Combination Meter

All conditions are met:


  • Engine switch on (IG)

  • ECUB terminal voltage is 10 V or more.

  • No communication with the combination meter assembly for 10 seconds or more.

  • CAN communication system

  • Combination meter assembly

  • Spoiler control ECU assembly

CAUTION / NOTICE / HINT

Note

The active rear wing system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Check for DTCs.

      Click here


      Body Electrical > Active Rear Wing > Trouble Codes
      OK
      DTCs U0101, U0129, U0142 and U0155 are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here