Diagnosis System

CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

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

(a) Select "CAN Bus Check" from the "System Select".
2. DTC COMBINATION TABLE
(a) Perform troubleshooting according to the combination of DTCs output.





HINT:
- Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the Techstream "CAN Bus Check" screen.
- U0073/94, U0123/62, U0124/95, U0126/63 and U0100/65 are the DTCs in the CAN communication system.
- *2: U0100/65 is output if no power is supplied to the ECM.
- The above table shows combination of these DTCs.
- O: DTCs that are being output.
- -: DTCs that are not being output.
- Skid Control ECU Communication Stop Mode Brake Actuator (Skid Control ECU) Communication Stop Mode.
- Steering Angle Sensor Communication Stop Mode Steering Angle Sensor Communication Stop Mode.
- Yaw Rate Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode.
- ECM Communication Stop Mode ECM Communication Stop Mode.

3. DTC TABLE BY ECU
HINT: 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 SIL line.





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