How to Proceed With Troubleshooting

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

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- DTCs for the CAN communication system are as follows: U0073/42, U0100/65 and U0001
- Refer to the troubleshooting procedures of each system if DTCs regarding the CAN communication system are not output.
- *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
- If the voltage is below 11 V, recharge or replace the battery before proceeding.

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3. CHECK AND CLEAR DTC*
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4. CHECK CAN BUS LINE
(a) Check the CAN bus line CAN Bus Line.
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5. CHECK TECHSTREAM
(a) Select "CAN Bus Check" Diagnosis System.
Result:





NOTE:
ECUs that are not installed are not displayed. Therefore, do not assume that those ECUs are having a communication stop malfunction.

B -- COMMUNICATION STOP MODE TABLE
A -- Continue to next step.
6. DTC COMBINATION TABLE
(a) Confirm the 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 connected to the CAN communication system are displayed on the Techstream "CAN Bus Check" screen.

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7. CIRCUIT INSPECTION
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8. IDENTIFICATION OF PROBLEM
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9. REPAIR OR REPLACE
NEXT -- Continue to next step.
10. CONFIRMATION TEST
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