Diagnosis 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.




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.
- If CAN communication system DTCs are output, the trouble cannot be determined only by checking the DTCs.

Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING".

a. ECM

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




b. SKID CONTROL ECU

HINT: DTC communication uses the SIL Line.




c. A/C AMPLIFIER

HINT: The A/C amplifier is connected to the CAN communication system but CAN communication DTCs are not output.




3. DTC, BUS CHECK COMBINATION TABLE
a. Perform troubleshooting according to the combination of DTCs that are output.

HINT:
- ECM COMMUNICATION STOP MODE.
- SKID CONTROL ECU COMMUNICATION STOP MODE.
- STEERING SENSOR COMMUNICATION STOP MODE.
- YAW RATE SENSOR COMMUNICATION STOP MODE.
- A/C AMPLIFIER COMMUNICATION STOP MODE.