How to Proceed With Troubleshooting

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
NOTICE:
- DTCs for the CAN communication system are as follows:U0073, U0100, U0101, U0104, U0114, U0122, U0123, U0124, U0126, U0130, U0131, U0132, U0145, U0146, U1002, U1101, U1108, U1109 and U1110.
- Refer to troubleshooting of each system DTCs regarding the CAN communication system are not output.

1. CHECK AND CLEAR DTCS
NEXT -- Continue to next step.

2. CHECK FOR INSTALLED SYSTEMS (ECUS & SENSORS) THAT USE CAN COMMUNICATION
(a) Check which of the following is used: intuitive parking assist (rear view monitor or back guide monitor), intuitive parking assist, dynamic laser cruise control and engine model.
NEXT -- Continue to next step.

3. CHECK CAN BUS LINE
(a) Check CAN bus line CAN Bus Line.
NEXT -- Continue to next step.

4. CHECK Techstream VIA CAN VIM
(a) Using the Techstream, Select "CAN Bus Check" Diagnosis System.
Standard:
All ECUs and sensors connected to the CAN communication system are displayed.
NOTICE:
- The systems (ECUs, sensors) that use CAN communication vary depending on the vehicle and option settings. Check which systems (ECUs, sensor) are installed on the vehicle Diagnosis System
- Non-installed ECUs or sensors are not displayed. Do not mistake them for being in the communication stop mode.
- If 2 or more ECUs or sensors are not displayed on the Techstream via the CAN VIM, perform troubleshooting for communication stop mode for each undisplayed ECU or sensor. (Open in on side of CAN sub bus line.)

NO -- COMMUNICATION STOP MOOD TABLE
YES -- Continue to next step.

5. DTC COMBINATION TABLE
(a) Confirm trouble according to the combination of output DTCs regarding the CAN communication system.
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's "CAN Bus Check" screen via the CAN VIM.

NEXT -- Continue to next step.

6. CIRCUIT INSPECTION
NEXT -- Continue to next step.

7. IDENTIFICATION OF PROBLEM
NEXT -- Continue to next step.

8. REPAIR OR REPLACE
NEXT -- Continue to next step.

9. CONFIRMATION TEST
NEXT -- END