How to Proceed With Troubleshooting

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

NOTICE:
* DTCs for the CAN communication system are as follows: U0073/94, U0100/65, U0123/62, U0124/95, and U0126/63.
* Refer to the troubleshooting section for each system if DTCs regarding the CAN communication system are not output.
1. CHECK CAN BUS LINE

HINT
* Check the CAN bus line Initial Inspection and Diagnostic Overview
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2. CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

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3. CHECK AND CLEAR DTCS

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4. CHECK CAN COMMUNICATION USING TECHSTREAM

(a) Select "Communication Bus Check" Diagnosis System.





NOTICE:
If two or more ECUs or sensors are not displayed on the Techstream, perform troubleshooting for open in one side of CAN branch wire for each undisplayed ECU or sensor (open circuit in CAN branch wire).

B -- GO TO COMMUNICATION STOP MODE TABLE Diagnosis System.

C -- GO TO OPEN IN ONE SIDE OF CAN BRANCH WIRE Open in One Side of CAN Sub Bus Line.
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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 "Communication Bus Check" screen.

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6. INSPECT CIRCUIT

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7. IDENTIFY PROBLEM

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8. REPAIR OR REPLACE

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9. PERFORM CONFIRMATION TEST

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