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 via the CAN VIM.




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

HINT:
- If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system.
- Display the "BUS CHECK" screen for approximately 1 minute and check for ECUs and sensors that a not indicated on the screen.

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




a. Systems (ECUs and 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 output by the ECU can be displayed by using the intelligent tester.
- If CAN communication system DTCs are output, trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING".




a. BRAKE ACTUATOR (SKID CONTROL ECU)

HINT: DTC communication uses the CAN communication system.




b. POWER STEERING ECU

HINT: DTC communication uses the SIL Line.




c. COMBINATION METER ASSEMBLY

HINT: DTC communication uses the CAN communication system.




d. AIR CONDITIONING AMPLIFIER

HINT: DTC communication uses the CAN communication system.

e. MAIN BODY ECU

HINT:
- The main body ECU is connected to the CAN communication system but CAN communication DTCs are not output.
- If "MAIN BODY" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "Main Body ECU Communication Stop Mode."

f. CENTER AIRBAG SENSOR ASSEMBLY

HINT:
- The center airbag sensor assembly is connected to the CAN communication system but CAN communication DTCs are not output.
- If "SRS AIRBAG" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "Center Airbag Sensor Communication Stop Mode."

g. ECM

HINT:
- The ECM is connected to the CAN communication system but CAN communication DTCs are not output.
- If "ENGINE" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "ECM Communication Stop Mode."




4. DTC COMBINATION TABLE

a. Perform troubleshooting according to the combination of DTCs output.

HINT:
- Brake Actuator (Skid Control ECU) Communication Stop Mode.
- Power Steering ECU Communication Stop Mode.
- ECM Communication Stop Mode.
- Center Airbag Sensor Communication Stop Mode.
- Air Conditioning Amplifier Communication Stop Mode.
- Combination Meter ECU Communication Stop Mode.
- Main Body ECU Communication Stop Mode.