Diagnosis System

NETWORKING: CAN COMMUNICATION 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. BUS CHECK (COMMUNICATION BUS CHECK)

HINT
The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream.

3. CHECK INSTALLED SYSTEMS (ECU AND SENSOR) 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.





4. 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) BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

HINT
DTC communication uses the CAN communication system.





(b) STEERING COLUMN ASSEMBLY (POWER STEERING ECU)

HINT
DTC communication uses the SIL line.





(c) AIR CONDITIONING AMPLIFIER ASSEMBLY

HINT
DTC communication uses the CAN communication system.





(d) ECM

HINT
DTC communication uses the CAN communication system.





(e) COMBINATION METER ASSEMBLY (COMBINATION METER ECU)

HINT
DTC communication uses the CAN communication system.





(f) MAIN BODY ECU

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

(g) CENTER AIRBAG SENSOR ASSEMBLY

HINT
The center airbag sensor assembly is connected to the CAN communication system but CAN communication DTCs are not output.

(h) SPIRAL CABLE SUB-ASSEMBLY (STEERING SENSOR)

HINT
The steering angle sensor is connected to the CAN communication system but CAN communication DTCs are not output.

(i) YAW RATE SENSOR

HINT
The yaw rate sensor is connected to the CAN communication system but CAN communication DTCs are not output.

5. DTC COMBINATION TABLE

(a) V Bus





HINT
* o: Stored
* X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
* *1: This DTC cannot be output when CAN communication is suspended.





HINT
* o: Stored
* X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
* *1: This DTC cannot be output when CAN communication is suspended.





HINT
* o: Stored
* X: Not stored or may be stored according to the malfunctioning part when one side of the CAN bus wire opens
* *1: This DTC cannot be output when CAN communication is suspended.

(b) Power Management Bus