Diagnosis System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. BUS CHECK
(a) Using Techstream, select "CAN Bus Check" from the "System Select".
2. CHECK FOR INSTALLED SYSTEMS (ECUS & 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: *1: with Dynamic laser cruise control system.

3. DTC TABLE BY ECU

HINT:
- In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using Techstream.
- If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLE SHOOTING" How to Proceed With Troubleshooting. (If, however, U0235 or U1102 is output alone, check the dynamic laser cruise control system.)

(a) ECM

HINT:
- DTC communication uses the CAN communication system.
- Cruise control ECU data is also output.





- *1: Displayed on the "Communication Malfunction DTC" screen Techstream. If U0235 or U1102 is output alone, CAN communication is normal U0235 or U1102).
- *2: Dynamic laser cruise control system DTC.
- *3: If only DTC U0100 is output, refer to Automatic Transaxle System U0100.
- *4: If only DTC U0101 is output, refer to SFI system U0101.

(b) SKID CONTROL ECU

HINT: DTC communication uses the SIL Line.





(c) NETWORK GATEWAY ECU

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

4. DTC COMBINATION TABLE





HINT:
- o: Set
- X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
- *1: Does not output it during communication error
- *2: Dynamic laser cruise control system DTC
- *3: If only DTC U0100 is output from ECM, refer to AUTOMATIC TRANSAXLE system U0100.