Diagnosis System

NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

1. CAN BUS CHECK

(a) Using the Techstream, select "CAN Bus Check" from the "System Select".

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

(a) Systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs, sensors) are installed on the vehicle.

HINT
ECUs and sensors that are connected to the LIN communication system and the local CAN system are also displayed.





3. DTC TABLE BY ECU

HINT
* In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the Techstream.
* If CAN communication system DTCs are output, trouble cannot be determined only by 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 CAN communication system.





(b) POWER STEERING ECU

HINT
DTC communication uses the CAN communication system.





(c) AIR CONDITIONING AMPLIFIER (w/ Air conditioning system)

HINT
* DTC communication uses the CAN communication system.
* The following DTC is output only for current malfunctions.






(d) 4WD CONTROL ECU (for 4WD)

HINT
DTC communication uses the CAN communication system.





(e) ECM (for 2AZ-FE)

HINT
DTC communication uses the CAN communication system.





(f) ECM (for 2ZR-FE)

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

(g) CENTER AIRBAG SENSOR

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

(h) STEERING ANGLE 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.

(j) COMBINATION METER

HINT
DTC communication uses the CAN communication system.





(k) MAIN BODY ECU

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

4. DTC COMBINATION TABLE

(a) CAN No. 1 Bus





HINT
* o: Set
* X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
* -: Not output
* *1: DTC is not output during communication error
* *2: Only current DTCs are output
* *3: Stored only when there is a communication error between the ECM and combination meter





HINT
* o: Set
* X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
* -: Not output
* *1: DTC is not output during communication error
* *2: Only current DTCs are output
* *3: Stored only when there is a communication error between the ECM and combination meter
* ECM Communication Stop Mode
* Skid Control ECU Communication Stop Mode
* Steering Angle Sensor Communication Stop Mode
* Yaw Rate Sensor Communication Stop Mode
* Combination Meter Communication Stop Mode
* Air Conditioning Amplifier Communication Stop Mode
* Center Airbag Sensor Communication Stop Mode
* Power Steering ECU Communication Stop Mode
* Main Body ECU Communication Stop Mode
* 4WD Control ECU Communication Stop Mode *1

*1: for 4WD