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 the CAN VIM.




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




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

HINT: There is a communication stop in the system of any properly connected ECUs that are not displayed.

2. DTC TABLE BY ECU

HINT:
- In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the intelligent tester (with CAN VIM).
- If CAN communication system DTCs are output, the trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING".

a. ECM






HINT: The ECM is connected to the CAN communication system.

HINT: The ECM is malfunctioning if U0001 is output alone. Replace the ECM.




b. Skid control ECU

HINT: DTC communication uses the SIL line.

c. GATEWAY ECU

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




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

HINT:
- ECM COMMUNICATION STOP MODE
- GATEWAY ECU COMMUNICATION STOP MODE
- TRANSLATE ECU COMMUNICATION STOP MODE