CAN COMMUNICATION SYSTEM DIAGNOSIS SYSTEM


  1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM


    1. V1 Bus


      1. ECM

      2. Power management control ECU

      3. Combination meter assembly

      4. Brake booster with master cylinder (Skid control ECU)

      5. Steering angle sensor

      6. Yaw rate and acceleration sensor

      7. Power steering ECU assembly

      8. Plugin charge control ECU assembly

      9. Certification ECU (Smart key ECU assembly)

      10. Main body ECU

      11. Navigation ECU sub-assembly (Navigation receiver assembly)*1

      12. Radio and display receiver assembly*2

    2. V2 Bus


      1. Power management control ECU

      2. Transmission control ECU assembly

      3. Parking assist ECU*3

      4. Driving support ECU*4

      5. Seat belt control ECU*5

      6. Center airbag sensor assembly

      7. Air conditioning amplifier assembly

    3. Power Management Bus


      1. Power management control ECU

      2. ECM

      3. Brake booster with master cylinder (Skid control ECU)

    4. Parking Assist Bus*4*5


      1. Driving support ECU

      2. Millimeter wave radar sensor assembly

        Tech Tips

        *1: for Navigation receiver type

        *2: for Radio and display type

        *3: w/ Intelligent parking assist system

        *4: w/ Dynamic radar cruise control system

        *5: w/ Pre-crash safety system

  2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION


    1. The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle.

      ECU/Sensor Name GTS Display Applicability
      ECM ECM (Engine) Installed on all vehicles
      Power management ECU

      • Hybrid Vehicle Control

      • Power Management1

      		 Installed on all vehicles
      Transmission control ECU assembly Transmission Control Installed on all vehicles
      Combination meter assembly Combination Meter Installed on all vehicles
      Main body ECU Main Body Installed on all vehicles
      Power steering ECU assembly Power Steering (EPS) Installed on all vehicles
      Brake booster with master cylinder (Skid control ECU) Skid Control (ABS/VSC/TRAC) Installed on all vehicles
      Steering angle sensor Spiral cable (Steering Angle Sensor) Installed on all vehicles
      Yaw rate and acceleration sensor Yaw Rate Sensor Installed on all vehicles
      Plugin charge control ECU assembly Plug-in Control Installed on all vehicles
      Center airbag sensor assembly Airbag Installed on all vehicles
      Certification ECU (Smart key ECU assembly) Certification (Smart) Installed on all vehicles
      Air conditioning amplifier assembly Air Conditioning Amplifier Installed on all vehicles
      Navigation ECU sub-assembly (Navigation receiver assembly) Display and Navigation (AVN1) w/ Navigation system (for Navigation receiver type)
      Radio and display receiver assembly Display and Navigation (AVN1)

      • w/ Navigation system (for Radio and display type)

      • w/ Audio and visual system
      Driving support ECU Driving Support (Cruise Control-ACC) w/ Dynamic radar cruise control system
      Parking assist ECU Parking Assist (Intelligent Parking Assist) w/ Intelligent parking assist system
      Millimeter wave radar sensor assembly - w/ Dynamic radar cruise control system
      Seat belt control ECU Seat Belt Control (Pre-Crash1) w/ Pre-crash safety system

  3. CAN BUS CHECK

    Tech Tips

    The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the GTS.


    1. Using the GTS, select "CAN Bus Check" from "System Select".

  4. DTC TABLE BY ECU

    Tech Tips


    • In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the GTS.

    • If CAN communication system DTCs are output, malfunctions cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting Click here.


    1. Power Management Control ECU / GTS Display "Hybrid Control"

      DTC Code Detection Item
      U0100-211 Lost Communication with ECM/PCM "A"
      U0100-212 Lost Communication with ECM/PCM "A"
      U0100-530 Lost Communication with ECM/PCM "A"
      U0110-159*1 Lost Communication with Drive Motor Control Module "A"
      U0110-160*2 Lost Communication with Drive Motor Control Module "A"
      U0110-656*1 Lost Communication with Drive Motor Control Module "A"
      U0110-657*1 Lost Communication with Drive Motor Control Module "A"
      U0129-220 Lost Communication with Brake System Control Module
      U0129-222 Lost Communication with Brake System Control Module
      U0129-527 Lost Communication with Brake System Control Module
      U0129-528 Lost Communication with Brake System Control Module
      U0140-146 Communication Error from Body ECU to HV ECU
      U0151-763 Communication Error from Airbag ECU to HV ECU
      U0164-594 Communication Error from A/C ECU to HV ECU
      U0164-827 Communication Error from A/C ECU to HV ECU
      U019B-440*3 Lost Communication with Battery Charger Control Module
      U029A-123*4 Lost Communication with Hybrid Battery Pack Sensor Module
      U0424-537*5 Invalid Data Received from HVAC Control Module
      U1104-728*6 Lost Communication with Driving Support ECU
      U1107-436 Lost Communication with Power Management Module

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *1: If this DTC is output, check the Hybrid Control System Click here.

      • *2: If this DTC is output, check the Hybrid Control System Click here

      • *3: If this DTC is output, check the Hybrid Control System Click here

      • *4: If this DTC is output, check the Hybrid Battery System Click here.

      • *5: If this DTC is output, check the Hybrid Control System Click here

      • *6: Dynamic radar cruise control system DTC

    2. Power Management Control ECU / GTS Display "Cruise Control"

      DTC Code Detection Item
      U0122*7 Lost Communication with Vehicle Dynamic Control Module

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *7: Cruise control system DTC

    3. Power Management Control ECU / GTS Display "Power Source Control"

      DTC Code Detection Item
      U0129 Vehicle Speed Signal Communication
      U0293*8 Lost Communication with HV ECU

      Tech Tips


      • DTC communication uses the CAN communication system.


      • *8: If U0293 is output alone, CAN communication is normal. Refer to Entry and Start System Click here.

    4. Power Management Control ECU / GTS Display "PM1 Gateway"

      DTC Code Detection Item
      U0103 Lost Communication with Gear Shift Module "A"
      U0104 Lost Communication with Driving Support ECU
      U0151 Lost Communication with Airbag ECU
      U0164 Lost Communication with HVAC Control Module
      U1002 Lost Communication with Gateway Module
      U1100 Lost Communication with Seat Belt Control ECU
      U110B Lost Communication with Parking Assist Control Module "B"

      Tech Tips


      • DTC communication uses the CAN communication system.

      • A "PM1 Gateway" output DTC indicates a communication error in the V2 bus.

    5. ECM / GTS Display "Engine and ECT"

      DTC Code Detection Item
      U0293 Lost Communication with HV ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    6. Transmission Control ECU Assembly / GTS Display "Transmission Control"

      DTC Code Detection Item
      U0146 Lost Communication with Body ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    7. Power Steering ECU Assembly / GTS Display "EMPS"

      DTC Code Detection Item
      U0129 Lost Communication with Brake System Control Module
      U0293 Lost Communication with Hybrid Control Module
      U1105 Lost Communication with Parking Assist ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    8. Brake Booster with Master Cylinder (Skid Control ECU) / GTS Display "ABS/VSC/TRC"

      DTC Code Detection Item
      U0073 Control Module Communication Bus OFF
      U0123 Lost Communication with Yaw Rate Sensor Module
      U0124 Lost Communication with Lateral Acceleration Sensor Module
      U0126 Lost Communication with Steering Angle Sensor Module
      U0293 Communication Error from HV ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    9. Steering Angle Sensor / GTS Display "Spiral cable (Steering Angle Sensor)"

      Tech Tips

      The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

    10. Yaw Rate and Acceleration Sensor / GTS Display "Yaw Rate Sensor"

      Tech Tips

      The yaw rate and acceleration sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

    11. Center Airbag Sensor Assembly / GTS Display "SRS Airbag"

      Tech Tips

      The center airbag sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

    12. Main Body ECU / GTS Display "Main Body"

      DTC Code Detection Item
      U0100 Lost Communication with ECM/ PCM "A"
      U0101 Lost Communication with TCM
      U0151 Lost Communication with Restraints Control Module
      U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module
      U0164 Lost Communication with HVAC Control Module
      U0293 Lost Communication with Hybrid Powertrain Control Module
      U0327 Software Incompatibility with Vehicle Security Control Module
      U1133 Lost Communication with PMN Module

      Tech Tips

      DTC communication uses the CAN communication system.

    13. Certification ECU (Smart Key ECU Assembly) / GTS Display "Entry&Start"

      DTC Code Detection Item
      U0100 Lost Communication with ECM / PCM "A"
      U0142 Lost Communication with Body Control Module "B"
      U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module
      U0293 Lost Communication with Hybrid Vehicle Control System

      Tech Tips

      DTC communication uses the CAN communication system.

    14. Air Conditioning Amplifier Assembly / GTS Display "Air Conditioner"

      DTC Code Detection Item
      U0100 Lost Communication with ECM
      U0131 Lost Communication with Electric Power Steering ECU
      U0142 Lost Communication with Main Body ECU
      U0155 Lost Communication with Combination Meter
      U0293 Lost Communication with HV ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    15. Combination Meter Assembly / GTS Display "Combination Meter"

      DTC Code Detection Item
      U0100 Lost Communication with ECM / PCM "A"
      U0129 Lost Communication with Skid Control ECU
      U0131 Lost Communication with Power Steering Control Module
      U0151 Lost Communication with Airbag ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    16. Navigation ECU Sub-Assembly (Navigation receiver assembly) / GTS Display "Navigation System"

      DTC Code Detection Item
      U0073 Sending Malfunction (Navigation to APGS)
      U0100 Lost Communication with ECM / PCM "A"
      U0129 Lost Communication with Brake System Control Module
      U0140 Lost Communication with Body Control Module
      U0155 Meter ECU Communication
      U0293 Lost Communication with HV ECU
      U1135 Lost Communication with Plug-in Control Module

      Tech Tips

      DTC communication uses the CAN communication system.

    17. Radio and Display Receiver Assembly / GTS Display "Navigation System"

      DTC Code Detection Item
      U0073 Sending Malfunction (Navigation to APGS)
      U0100 Lost Communication with ECM / PCM "A"
      U0129 Lost Communication with Brake System Control Module
      U0140 Lost Communication with Body Control Module
      U0155 Meter ECU Communication
      U0293 Lost Communication with HV ECU
      U1135 Lost Communication with Plug-in Control Module

      Tech Tips

      DTC communication uses the CAN communication system.

    18. Seat Belt Control ECU / GTS Display "Pre-Crash"

      DTC Code Detection Item
      U0122 Lost Communication with Vehicle Dynamics Control Module
      U0140 Lost Communication with Main Body ECU
      U0151 Lost Communication with Airbag ECU
      U1104 Lost Communication with Driving Support ECU

      Tech Tips

      DTC communication uses the CAN communication system.

    19. Driving Support ECU / GTS Display "Pre-Crash 2"

      DTC Code Detection Item
      U0122 Lost Communication with Vehicle Dynamics Control Module
      U0123 Lost Communication with Yaw Rate Sensor Module
      U0126 Lost Communication with Steering Angle Sensor Module
      U0235*9 Lost Communication with Cruise Control Front Distance Range Sensor
      U0293 Lost Communication with HV ECU
      U1002 Lost Communication with Gateway Module
      U1100 Lost Communication with Seat Belt Control ECU
      U1104 Lost Communication with Driving Support ECU

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *9: If U0235 is output alone, CAN communication is normal. Refer to Dynamic Radar Cruise Control System Click here.

    20. Driving Support ECU / GTS Display "Radar Cruise"

      DTC Code Detection Item
      U0122 Lost Communication with Vehicle Dynamics Control Module
      U0123 Lost Communication with Yaw Rate Sensor Module
      U0126 Lost Communication with Steering Angle Sensor Module
      U0235*10 Lost Communication with Cruise Control Front Distance Range Sensor
      U0293 Lost Communication with HV ECU
      U1104 Lost Communication with Driving Support ECU

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *10: If U0235 is output alone, CAN communication is normal. Refer to Dynamic Radar Cruise Control System Click here.

    21. Plugin Charge Control ECU Assembly / GTS Display "Plug-in Control"

      DTC Code Detection Item
      U0293-439*11 Lost Communication with Hybrid Powertrain Control Module
      U0293-449*12 Lost Communication with Hybrid Powertrain Control Module

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *11: If this DTC is output, check the plug-in charge control system Click here.

      • *12: If this DTC is output, check the plug-in charge control system Click here.

    22. Millimeter Wave Radar Sensor Assembly

      Tech Tips

      The millimeter wave radar sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

    23. Parking Assist ECU / GTS Display "IPA/Parking Assist Monitor"

      DTC Code Detection Item
      U0073 Control Module Communication Bus Off
      U0100 Lost Communication with ECM / PCM "A"
      U0126 Lost Communication with Steering Angle Sensor Module
      U0129 Lost Communication with Brake System Control Module
      U0131 Lost Communication with Power Steering Control Module
      U0140 Lost Communication with Main Body ECU
      U0293 Lost Communication with HV ECU
      U1000*13 CAN Communication Failure (Message Registry)

      Tech Tips


      • DTC communication uses the CAN communication system.

      • *13: If U1000 is output alone, CAN communication is normal. Refer to Intelligent Parking Assist System Click here.

  5. DTC COMBINATION TABLE


    1. V1 Bus

      DTC Trouble Mode
      Output ECU Output DTC Power Management ECU Communication Stop Mode ECM Communication Stop Mode Main Body ECU Communication Stop Mode Combination Meter ECU Communication Stop Mode

      Power management control ECU

      (Hybrid Control)

      		 U0100 ○*1 ○ X X
      U0129 ○*1 X X X
      U0140 ○*1 X ○ X
      U0151 ○*1 X X X
      U0164 ○*1 X X X
      U1104 ○*1 X X X
      U1107 ○*1 X X X

      Power management control ECU

      (Cruise Control)

      		 U0122 ○*1 X X X

      Power management control ECU

      (Electric Power Control)

      		 U0129 ○*1 X X X
      U0293 ○*1 X X X
      ECM - - - - -
      Plugin charge control ECU assembly - - - - -
      Main body ECU U0100 X ○ ○*1 X
      U0101 ○ X ○*1 X
      U0151 X X ○*1 X
      U0155 X X ○*1 ○
      U0164 X X ○*1 X
      U0293 ○ X ○*1 X
      U0327 X X ○*1 X
      U1133 ○ X ○*1 X
      Combination meter assembly U0100 X ○ X ○*1
      U0129 X X X ○*1
      U0131 X X X ○*1
      U0151 X X X ○*1
      Brake booster with master cylinder (Skid control ECU) U0073 X X X X
      U0123 X X X X
      U0124 X X X X
      U0126 X X X X
      U0293 ○ X X X
      Power steering ECU assembly U0129 X X X X
      U0293 ○ X X X
      U1105 X X X X
      Certification ECU (Smart key ECU assembly) U0100 - - - -
      U0142 X X ○ X
      U0155 X X X ○
      U0293 ○ X X X
      Navigation ECU sub-assembly (Navigation receiver assembly)*3 U0073 X X X X
      U0100 ○ ○ X X
      U0129 X X X X
      U0140 X X ○ X
      U0155 X X X ○
      U0293 ○ X X X
      U1135 X X X X
      Radio and display receiver assembly*4 U0073 X X X X
      U0100 ○ ○ X X
      U0129 X X X X
      U0140 X X ○ X
      U0155 X X X ○
      U0293 ○ X X X
      U1135 X X X X
      DTC Trouble Mode
      Output ECU Output DTC Power Steering ECU Communication Stop Mode Skid Control ECU Communication Stop Mode Steering Angle Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode

      Power management control ECU

      (Hybrid Control)

      		 U0100 X X X X
      U0129 X ○ X X
      U0140 X X X X
      U0151 X X X X
      U0164 X X X X
      U1104 X X X X
      U1107 X X X X

      Power management control ECU

      (Cruise Control)

      		 U0122 X ○ X X

      Power management control ECU

      (Electric Power Control)

      		 U0129 X ○ X X
      U0293 X X X X
      ECM - - - - -
      Plugin charge control ECU assembly - - - - -
      Main body ECU U0100 X X X X
      U0101 X X X X
      U0151 X X X X
      U0155 X X X X
      U0164 X X X X
      U0293 X X X X
      U0327 X X X X
      U1133 X X X X
      Combination meter assembly U0100 X X X X
      U0129 X ○ X X
      U0131 ○ X X X
      U0151 X X X X
      Brake booster with master cylinder (Skid control ECU) U0073 X ○*1, 2 X X
      U0123 X ○*1 X ○
      U0124 X ○*1 X ○
      U0126 X ○*1 ○ X
      U0293 X ○*1 X X
      Power steering ECU assembly U0129 ○*1 ○ X X
      U0293 ○*1 X X X
      U1105 ○*1 X X X
      Certification ECU (Smart key ECU assembly) U0100 - - - -
      U0142 X X X X
      U0155 X X X X
      U0293 X X X X
      Navigation ECU sub-assembly (Navigation receiver assembly)*3 U0073 X X X X
      U0100 X X X X
      U0129 X ○ X X
      U0140 X X X X
      U0155 X X X X
      U0293 X X X X
      U1135 X X X X
      Radio and display receiver assembly*4 U0073 X X X X
      U0100 X X X X
      U0129 X ○ X X
      U0140 X X X X
      U0155 X X X X
      U0293 X X X X
      U1135 X X X X
      DTC
      Output ECU Output DTC Certification ECU Communication Stop Mode Plugin Charge Control ECU Communication Stop Mode Navigation ECU Communication Stop Mode Audio Receiver Assembly Communication Stop Mode

      Power management control ECU

      (Hybrid Control)

      		 U0100 X X X X
      U0129 X X X X
      U0140 X X X X
      U0151 X X X X
      U0164 X X X X
      U1104 X X X X
      U1107 X X X X

      Power management control ECU

      (Cruise Control)

      		 U0122 X X X X

      Power management control ECU

      (Electric Power Control)

      		 U0129 X X X X
      U0293 X X X X
      ECM - - - - -
      Plugin charge control ECU assembly - - - - -
      Main body ECU U0100 X X X X
      U0101 X X X X
      U0151 X X X X
      U0155 X X X X
      U0164 X X X X
      U0293 X X X X
      U0327 ○ X X X
      U1133 X X X X
      Combination meter assembly U0100 X X X X
      U0129 X X X X
      U0131 X X X X
      U0151 X X X X
      Brake booster with master cylinder (Skid control ECU) U0073 X X X X
      U0123 X X X X
      U0124 X X X X
      U0126 X X X X
      U0293 X X X X
      Power steering ECU assembly U0129 X X X X
      U0293 X X X X
      U1105 X X X X
      Certification ECU (Smart key ECU assembly) U0100 - - - -
      U0142 ○*1 X X X
      U0155 ○*1 X X X
      U0293 ○*1 X X X
      Navigation ECU sub-assembly (Navigation receiver assembly)*3 U0073 X X ○*1 ○*1
      U0100 X X ○*1 ○*1
      U0129 X X ○*1 ○*1
      U0140 X X ○*1 ○*1
      U0155 X X ○*1 ○*1
      U0293 X X ○*1 ○*1
      U1135 X ○ X X
      Radio and display receiver assembly*4 U0073 X X ○*1 ○*1
      U0100 X X ○*1 ○*1
      U0129 X X ○*1 ○*1
      U0140 X X ○*1 ○*1
      U0155 X X ○*1 ○*1
      U0293 X X ○*1 ○*1
      U1135 X ○ X X

      Tech Tips


      • ○: Set

      • X: Not set or may be set according to the malfunctioning part when one side of the CAN branch wire opens.

      • -: DTC is not output.

      • *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.

      • *2: DTC U0123, U0124 and U0126 are not stored when DTC U0073 has already been stored.

      • *3: for Navigation receiver type

      • *4: for Radio and display type

      • Skid Control ECU Communication Stop Mode Click here

      • Power Steering ECU Communication Stop Mode Click here

      • Plugin Charge Control ECU Communication Stop Mode Click here

      • Steering Angle Sensor Communication Stop Mode Click here

      • Yaw Rate Sensor Communication Stop Mode Click here

      • ECM Communication Stop Mode Click here

      • Main Body ECU Communication Stop Mode Click here

      • Combination Meter ECU Communication Stop Mode Click here

      • Certification ECU Communication Stop Mode Click here

      • Power Management ECU Communication Stop Mode Click here

      • Navigation ECU Communication Stop Mode Click here

      • Audio Receiver Assembly Communication Stop Mode Click here