CAN COMMUNICATION SYSTEM > DIAGNOSIS SYSTEM

for Preparation Click here



BUS CHECK (COMMUNICATION MALFUNCTION DTC)

HINT:
Only CAN communication system DTCs for each ECU can be displayed on the intelligent tester.



    G029877E01

  1. Select "Bus Check" from the "System Select" screen on the intelligent tester.



    2. G029878

  2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".



    3. G029879

  3. Select the system of the DTC to be checked and select "Details".



    4. G029880

  4. CAN communication system DTCs are displayed.


BUS CHECK (COMMUNICATION BUS CHECK)

HINT:
The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester.



    G029878

  1. Select "Communication Bus Check" from the "Bus Check" screen.



    2. C197126

  2. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.

    HINT:
    1. If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system (Click here).

    2. C197127
      The default item displayed in the combo box is "ALL". When checking the ECUs (sensors) connected to each bus, pull down the combo box and select the bus to be checked from the drop down list. The drop down list displays "ALL", "V Bus", and the names of the remaining buses.
      Combo Box
      		Display Content
      ALL
      		All ECUs (sensors) connected to the CAN bus
      V Bus
      		ECUs (sensors) connected to the V bus
      Bus Name
      		ECUs (sensors) connected to the selected bus
    3. The connection status (shown below) is indicated by the background color displayed behind the system name.
      ECU (Sensor) on V Bus 
      Background Color
      		Connection Status
      White
      		Detected normally
      Yellow
      		Could not be detected in the past, but is currently detected
      Red
      		Detected in the past, but cannot be detected now
      Not displayed
      		Has never been detected
      ECU (Sensor) with no Data Monitor History 
      Background Color
      		Connection Status
      White
      		Detected normally
      Yellow
      		Could not be detected in the past, but is currently detected
      Red
      		Detected in the past, but cannot be detected now
      Not displayed
      		Has never been detected
      ECU (Sensor) with no Data Monitor History 
      Background Color
      		Connection Status
      White
      		Detected normally
      Yellow
      		Could not be detected in the past, but is currently detected
      Red
      		Detected in the past, but cannot be detected now
      Red
      		Has never been detected but has connection history
      Not displayed
      		Has never been detected and has no connection history



    3. G029882

  3. "There is no system connected to the communication bus" is displayed if there are no ECUs or sensors connected to the CAN bus.


CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT ADOPT CAN COMMUNICATION

  1. Systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs and sensors) are installed on the vehicle.

    ECU/Sensor Name
    		Check Method
    Brake actuator assembly (Skid control ECU)
    		Installed on all vehicles
    Spiral cable sub-assembly (Steering sensor)
    		Installed on all vehicles
    Steering column assembly (Power steering ECU)
    		Installed on all vehicles
    Yaw rate sensor
    		Installed on all vehicles
    ECM
    		Installed on all vehicles
    Center airbag sensor assembly
    		Installed on all vehicles
    Air conditioning amplifier assembly
    		Installed on all vehicles
    Combination meter assembly (Combination meter ECU)
    		Installed on all vehicles
    Main body ECU
    		Installed on all vehicles
    Certification ECU
    		With Entry and Start System
    Power management control ECU
    		For 1KR-FE
    Power source control ECU
    		For 1ND-TV


DTC TABLE BY ECU

HINT:
  1. In the CAN communication system, CAN communication system DTCs output by the ECU can be displayed by using the intelligent tester.
  2. If CAN communication system DTCs are output, trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "How to Proceed with Troubleshooting "(Click here).

  1. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073
    		Control Module Communication Bus OFF
    U0100
    		Lost Communication with ECM/PCM "A"
    U0123
    		Lost Communication with Yaw Rate Sensor Module
    U0124
    		Lost Communication with Lateral Acceleration Sensor Module
    U0126
    		Lost Communication with Steering Angle Sensor Module

  2. STEERING COLUMN ASSEMBLY (POWER STEERING ECU)

    HINT:
    DTC communication uses the SIL line.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0129
    		Lost Communication with Skid Control ECU
    U1103
    		Lost Communication Engine Stop and Start ECU

  3. AIR CONDITIONING AMPLIFIER ASSEMBLY

    HINT:
    DTC communication uses the CAN communication system.


    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0131
    		Lost Communication with Electric Power Steering ECU
    U0142*
    		Lost Communication with Main Body ECU
    U0155
    		Lost Communication with Combination Meter
    *: for Automatic Air Conditioning System

  4. ECM

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0129
    		Lost Communication with Skid Control ECU
    U1103
    		Lost Communication Engine Stop and Start ECU

  5. COMBINATION METER ASSEMBLY (COMBINATION METER ECU)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0129
    		Lost Communication with Skid Control ECU
    U0131
    		Lost Communication with Electric Power Steering ECU
    U0151
    		Lost Communication with Airbag ECU

  6. MAIN BODY ECU

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0101
    		Lost Communication with Skid Control ECU
    U0151
    		Lost Communication with Airbag ECU
    U0155
    		Lost Communication with Combination Meter
    U0327*
    		Software Incompatibility with Vehicle Security
    U1133
    		Lost Communication with Power Management Module
    *: w/ Entry and Start System

  7. CERTIFICATION ECU

    HINT:
    1. DTC communication uses the CAN communication system.
    2. Vehicle with entry and start system only.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0142
    		Lost Communication with Skid Control ECU
    U0155
    		Lost Communication with Combination Meter

  8. POWER MANAGEMENT CONTROL ECU

    HINT:
    1. DTC communication uses the CAN communication system.
    2. for 1KR-FE and 1NR-FE only

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U1002
    		Lost Communication with Gateway Module

  9. POWER SOURCE CONTROL ECU

    HINT:
    1. DTC communication uses the CAN communication system.
    2. for 1ND-TV only

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"

  10. ENGINE STOP AND START ECU

    HINT:
    1. DTC communication uses the CAN communication system.
    2. Vehicle with engine stop and start system only

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0121
    		Lost Communication with Brake System Control Module
    U0131
    		Lost Communication with Power Steering Control Module
    U0140
    		Lost Communication with Main Body Control Module
    U0151
    		Lost Communication with Airbag Control Module
    U0155
    		Lost Communication with Combination Meter
    U0164
    		Lost Communication with Air Conditioning Amplifier

  11. CENTER AIRBAG SENSOR ASSEMBLY

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

  12. SPIRAL CABLE SUB-ASSEMBLY (STEERING SENSOR)

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

  13. YAW RATE SENSOR

    HINT:
    The yaw rate sensor is connected to the CAN communication system but CAN communication DTCs are not output.


DTC COMBINATION TABLE

  1. V Bus

    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Air Conditioning Amplifier Communication Stop Mode
    		Brake Actuator Assembly (Skid Control ECU) Communication Stop Mode
    		ECM Communication Stop Mode
    Air Conditioning Amplifier Assembly
    		U0100
    		○*1
    		X
    		○
    U0131
    		○*1
    		X
    		X
    U0142*3
    		○*1
    		X
    		X
    U0155
    		○*1
    		X
    		X
    Brake Actuator Assembly (Skid Control ECU)
    		U0073
    		X
    		○*1
    		X
    U0100
    		X
    		○*1
    		○
    U0123
    		X
    		○*1
    		X
    U0124
    		X
    		○*1
    		X
    U0126
    		X
    		○*1
    		X
    ECM
    		U0129
    		X
    		○
    		○*1
    U1103*7
    		X
    		X
    		○*1
    Main Body ECU
    		U0100*6
    		X
    		X
    		○
    U0101*6
    		X
    		X
    		○
    U0151*6
    		X
    		X
    		X
    U0155*6
    		X
    		X
    		X
    U0327*2, *6
    		X
    		X
    		X
    U1133*6
    		X
    		X
    		X
    Combination Meter Assembly (Combination Meter ECU)
    		U0100
    		X
    		X
    		○
    U0129
    		X
    		○
    		X
    U0131
    		X
    		X
    		X
    U0151
    		X
    		X
    		X
    Certification ECU*2
    		U0100*2
    		X
    		X
    		○
    U0142*2
    		X
    		X
    		X
    U0155*2
    		X
    		X
    		X
    Steering Column Assembly (Power Steering ECU)
    		U0100
    		X
    		X
    		○
    U0129
    		X
    		○
    		X
    U1103*7
    		X
    		X
    		X
    Power Management Control ECU*4
    		U0100*4
    		X
    		X
    		○
    Power Source Control ECU*5
    		U0100*5
    		X
    		X
    		○
    Engine Stop and Start ECU*7
    		U0100
    		X
    		X
    		○
    U0121
    		X
    		○
    		X
    U0131
    		X
    		X
    		X
    U0140
    		X
    		X
    		X
    U0151
    		X
    		X
    		X
    U0155
    		X
    		X
    		X
    U0164
    		○
    		X
    		X

    HINT:
    1. ○: Stored
    2. X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: This DTC cannot be output when CAN communication is suspended.
    4. *2: w/ Entry and Start System
    5. *3: for Automatic Air Conditioning System
    6. *4: for 1KR-FE and 1NR-FE with Entry and Start System
    7. *5: for 1ND-TV with Entry and Start System
    8. *6: w/ Double Locking Function
    9. *7: w/ Stop and Start System


    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Center Airbag Sensor Communication Stop Mode
    		Main Body ECU Communication Stop Mode
    		Combination Meter ECU Communication Stop Mode
    Air Conditioning Amplifier Assembly
    		U0100
    		X
    		X
    		X
    U0131
    		X
    		X
    		X
    U0142*3
    		X
    		○
    		X
    U0155
    		X
    		X
    		○
    Brake Actuator Assembly (Skid Control ECU)
    		U0073
    		X
    		X
    		X
    U0100
    		X
    		X
    		X
    U0123
    		X
    		X
    		X
    U0124
    		X
    		X
    		X
    U0126
    		X
    		X
    		X
    ECM
    		U0129
    		X
    		X
    		X
    U1103*7
    		X
    		X
    		X
    Main Body ECU
    		U0100*6
    		X
    		○*1
    		X
    U0101*6
    		X
    		○*1
    		X
    U0151*6
    		○
    		○*1
    		X
    U0155*6
    		X
    		○*1
    		○
    U0327*2, *6
    		X
    		○*1
    		X
    U1133*6
    		X
    		○*1
    		X
    Combination Meter Assembly (Combination Meter ECU)
    		U0100
    		X
    		X
    		○*1
    U0129
    		X
    		X
    		○*1
    U0131
    		X
    		X
    		○*1
    U0151
    		○
    		X
    		○*1
    Certification ECU*2
    		U0100*2
    		X
    		X
    		X
    U0142*2
    		X
    		○
    		X
    U0155*2
    		X
    		X
    		○
    Steering Column Assembly (Power Steering ECU)
    		U0100
    		X
    		X
    		X
    U0129
    		X
    		X
    		X
    U1103*7
    		X
    		X
    		X
    Power Management Control ECU*4
    		U0100*4
    		X
    		X
    		X
    Power Source Control ECU*4
    		U0100*5
    		X
    		X
    		X
    Engine Stop and Start ECU*7
    		U0100
    		X
    		X
    		X
    U0121
    		X
    		X
    		X
    U0131
    		X
    		X
    		X
    U0140
    		X
    		○
    		X
    U0151
    		○
    		X
    		X
    U0155
    		X
    		X
    		○
    U0164
    		X
    		X
    		X

    HINT:
    1. ○: Stored
    2. X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: This DTC cannot be output when CAN communication is suspended.
    4. *2: w/ Entry and Start System
    5. *3: for Automatic Air Conditioning System
    6. *4: for 1KR-FE and 1NR-FE with Entry and Start System
    7. *5: for 1ND-TV with Entry and Start System
    8. *6: w/ Double Locking Function
    9. *7: w/ Stop and Start System


    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Yaw Rate Sensor Communication Stop Mode
    		Certification ECU Communication Stop Mode
    		Steering Angle Sensor Communication Stop Mode
    Air Conditioning Amplifier Assembly
    		U0100
    		X
    		X
    		X
    U0131
    		X
    		X
    		X
    U0142*3
    		X
    		X
    		X
    U0155
    		X
    		X
    		X
    Brake Actuator Assembly (Skid Control ECU)
    		U0073
    		X
    		X
    		X
    U0100
    		X
    		X
    		X
    U0123
    		○
    		X
    		X
    U0124
    		○
    		X
    		X
    U0126
    		X
    		X
    		○
    ECM
    		U0129
    		X
    		X
    		X
    U1103*7
    		X
    		X
    		X
    Main Body ECU
    		U0100*6
    		X
    		X
    		X
    U0101*6
    		X
    		X
    		X
    U0151*6
    		X
    		X
    		X
    U0155*6
    		X
    		X
    		X
    U0327*2, *6
    		X
    		○
    		X
    U1133*6
    		X
    		X
    		X
    Combination Meter Assembly (Combination Meter ECU)
    		U0100
    		X
    		X
    		X
    U0129
    		X
    		X
    		X
    U0131
    		X
    		X
    		X
    U0151
    		X
    		X
    		X
    Certification ECU*2
    		U0100*2
    		X
    		○*1
    		X
    U0142*2
    		X
    		○*1
    		X
    U0155*2
    		X
    		○*1
    		X
    Steering Column Assembly (Power Steering ECU)
    		U0100
    		X
    		X
    		X
    U0129
    		X
    		X
    		X
    U1103*7
    		X
    		X
    		X
    Power Management Control ECU*4
    		U0100*4
    		X
    		X
    		X
    Power Source Control ECU*5
    		U0100*5
    		X
    		X
    		X
    Engine Stop and Start ECU*7
    		U0100
    		X
    		X
    		X
    U0121
    		X
    		X
    		X
    U0131
    		X
    		X
    		X
    U0140
    		X
    		X
    		X
    U0151
    		X
    		X
    		X
    U0155
    		X
    		X
    		X
    U0164
    		X
    		X
    		X

    HINT:
    1. ○: Stored
    2. X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: This DTC cannot be output when CAN communication is suspended.
    4. *2: w/ Entry and Start System
    5. *3: for Automatic Air Conditioning System
    6. *4: for 1KR-FE and 1NR-FE with Entry and Start System
    7. *5: for 1ND-TV with Entry and Start System
    8. *6: w/ Double Locking Function
    9. *7: w/ Stop and Start System


    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Power Steering ECU Communication Stop Mode
    		Power Management Control ECU Communication Stop Mode
    		Power Source Control ECU Communication Stop Mode
    		Engine Stop and Start ECU Communication Stop Mode
    Air Conditioning Amplifier Assembly
    		U0100
    		X
    		X
    		X
    		X
    U0131
    		○
    		X
    		X
    		X
    U0142*3
    		X
    		X
    		X
    		X
    U0155
    		X
    		X
    		X
    		X
    Brake Actuator Assembly (Skid Control ECU)
    		U0073
    		X
    		X
    		X
    		X
    U0100
    		X
    		X
    		X
    		X
    U0123
    		X
    		X
    		X
    		X
    U0124
    		X
    		X
    		X
    		X
    U0126
    		X
    		X
    		X
    		X
    ECM
    		U0129
    		X
    		X
    		X
    		X
    U1103*7
    		X
    		X
    		X
    		○
    Main Body ECU
    		U0100*6
    		X
    		X
    		X
    		X
    U0101*6
    		X
    		X
    		X
    		X
    U0151*6
    		X
    		X
    		X
    		X
    U0155*6
    		X
    		X
    		X
    		X
    U0327*2, *6
    		X
    		X
    		X
    		X
    U1133*6
    		X
    		○
    		○
    		X
    Combination Meter Assembly (Combination Meter ECU)
    		U0100
    		X
    		X
    		X
    		X
    U0129
    		X
    		X
    		X
    		X
    U0131
    		○
    		X
    		X
    		X
    U0151
    		X
    		X
    		X
    		X
    Certification ECU*2
    		U0100*2
    		X
    		X
    		X
    		X
    U0142*2
    		X
    		X
    		X
    		X
    U0155*2
    		X
    		X
    		X
    		X
    Steering Column Assembly (Power Steering ECU)
    		U0100
    		○*1
    		X
    		X
    		X
    U0129
    		○*1
    		X
    		X
    		X
    U1103*7
    		○*1
    		X
    		X
    		○
    Power Management Control ECU*4
    		U0100*4
    		X
    		○*1
    		X
    		X
    Power Source Control ECU*5
    		U0100*5
    		X
    		X
    		○*1
    		X
    Engine Stop and Start ECU*7
    		U0100
    		X
    		X
    		X
    		○*1
    U0121
    		X
    		X
    		X
    		X*1
    U0131
    		○
    		X
    		X
    		X*1
    U0140
    		X
    		X
    		X
    		X*1
    U0151
    		X
    		X
    		X
    		X*1
    U0155
    		X
    		X
    		X
    		X*1
    U0164
    		X
    		X
    		X
    		X*1

    HINT:
    1. ○: Stored
    2. X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: This DTC cannot be output when CAN communication is suspended.
    4. *2: w/ Entry and Start System
    5. *3: for Automatic Air Conditioning System
    6. *4: for 1KR-FE and 1NR-FE with Entry and Start System
    7. *5: for 1ND-TV with Entry and Start System
    8. *6: w/ Double Locking Function
    9. *7: w/ Stop and Start System

  2. Power Management Bus

    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Power Management Control ECU Communication Stop Mode
    		Power Source Control ECU Communication Stop Mode
    		ECM Communication Stop Mode
    Power Management Control ECU
    		U0100*2
    		○
    		-
    		○
    U1002*2
    		○
    		-
    		○

    HINT:
    1. ○: Stored
    2. -: None
    3. *2: w/ Entry and Start System