AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:U0073, U0401, U0416, U0422, U0423

DTC Code DTC Name
U0073 Control Module Communication Bus OFF
U0401 Invalid Data Received from ECM/PCM "A"
U0416 Invalid Data Received from Vehicle Dynamics Control Module
U0422 Invalid Data Received from Body Control Module
U0423 Invalid Data Received from Instrument Panel Cluster Control Module

DESCRIPTION

Tech Tips


  • Problems on the CAN bus (communication line) can be detected from the DLC3 connector (Except when the DLC3 branch line is open).

  • By using the GTS, it is possible to check CAN communication DTC.

  • The DLC3 is connected to the CAN communication line, but the CAN communication is unable to detect problems on the DLC3 branch line.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
U0073

  1. Ignition voltage is 9 V or more, and this condition continues for 1 second or more.

  2. Data reception and transmission are not possible

  3. 500 ms

  4. 1-trip detection logic

 CAN communication system
U0401

  1. CAN bus is normal.

  2. Reception of malfunction signal from the ECM.

  3. 50 times

  4. 1-trip detection logic

 CAN communication system
U0416

  1. CAN bus is normal.

  2. Reception of malfunction signal from the skid control ECU (brake actuator assembly).

  3. 40 times

  4. 1-trip detection logic

 CAN communication system
U0422

  1. CAN bus is normal.

  2. Reception of malfunction signal from the main body ECU (network gateway ECU).

  3. 40 times

  4. 1-trip detection logic

 CAN communication system
U0423

  1. CAN bus is normal.

  2. Reception of malfunction signal from the combination meter assembly.

  3. 40 times

  4. 1-trip detection logic

 CAN communication system

CAUTION / NOTICE / HINT

Note

Perform the universal trip to clear permanent DTCs Click here.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and push the GTS main switch ON.

    3. Read the DTCs using the GTS Click here.


    NEXT

    GO TO CAN COMMUNICATION SYSTEM Click here