Diagnosis System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. BUS CHECK
(a) Select "CAN Bus Check" from the "System Select" screen on the Techstream.








HINT:
- If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system Symptom Related Diagnostic Procedures.
- Display the communication BUS check screen for approximately 1 minute and check for ECUs and sensors that are 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 and 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 Techstream.
- If CAN communication system DTCs are output, trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING" How to Proceed With Troubleshooting.

(a) SKID CONTROL ECU
HINT: DTC communication uses the SIL Line.





(b) YAW RATE SENSOR
HINT:
- The yaw rate sensor is connected to the CAN communication system but CAN communication DTCs are not output.
- If "YAW/DECELERATE" is not displayed on the "BUS CHECK" screen on the Techstream, proceed to "Yaw Rate Sensor Communication Stop Mode." Yaw Rate Sensor Communication Stop Mode

(c) STEERING ANGLE SENSOR
HINT:
- The steering sensor is connected to the CAN communication system but CAN communication DTCs are not output.
- If "STEERING_SENSOR" is not displayed on the "BUS CHECK" screen on the Techstream, proceed to "Steering Angle Sensor Communication Stop Mode." Steering Angle Sensor Communication Stop Mode

(d) 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 Techstream, proceed to "ECM Communication Stop Mode." ECM Communication Stop Mode

4. DTC COMBINATION TABLE





HINT:
- o: It is necessary to check for the trouble mode.
- X: Not output

(a) Perform troubleshooting according to the combination of DTCs output.
HINT:
- Skid Control ECU Communication Stop Mode: Skid Control ECU Communication Stop Mode
- ECM Communication Stop Mode: ECM Communication Stop Mode
- Yaw Rate Sensor Communication Stop Mode: Yaw Rate Sensor Communication Stop Mode
- Steering Angle Sensor Communication Stop Mode: Steering Angle Sensor Communication Stop Mode