CAN Communication System

DIAGNOSIS SYSTEM

1. BUS CHECK




a. Select "BUS CHECK" from the "OBD/MOBD MENU" screen.

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




b. Press "ENTER" on the intelligent tester screen via CAN VIM.




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

HINT: If ECUs or sensors that should be properly connected are not displayed, there is a communication stop in the system.

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




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

3. DTC TABLE BY ECU

HINT:
- In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the intelligent tester.
- If CAN communication system DTCs are output , trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING "(If, however, U0235 is output alone, see the dynamic laser cruise control system.)




a. HV control ECU (HV)

HINT:
- DTC communication uses the CAN communication system.
- Distance control ECU data is also output.
- *1: Displayed on the "communication malfunction DTCs"screen of the intelligent tester. If U0235 is output alone, the CAN communication system is normal.
- Check for INFORMATION
- U0110-159, U0110-160, U0110-656, U0110-657 are not the DTCs for the CAN communication system. Therefore, refer to the troubleshooting procedures for the hybrid control system.




b. HV Control ECU (ENGINE)




c. Skid control ECU

HINT: DTC communication uses the SIL line.

HINT: Check for INFORMATION.




d. Power steering ECU

HINT: DTC communication uses the SIL line.

e. Gateway ECU

HINT: The gateway ECU is connected to the CAN communication system, but CAN communication DTCs are not output.










4. DTC COMBINATION TABLE
a. Perform troubleshooting according to the combination of DTCs output.

HINT:
- HYBRID CONTROL ECU COMMUNICATION STOP MODE
- SKID CONTROL ECU COMMUNICATION STOP MODE
- YAW RATE SENSOR COMMUNICATION STOP MODE
- STEERING SENSOR COMMUNICATION STOP MODE
- GATEWAY ECU COMMUNICATION STOP MODE
- POWER STEERING ECU COMMUNICATION STOP MODE
- DISTANCE CONTROL ECU COMMUNICATION STOP MODE
- TELEVISION CAMERA ECU COMMUNICATION STOP MODE