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Use M.U.T.-III to perform the CAN bus diagnosis.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
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Check the ASC diagnosis code (Refer to GROUP 35C - Troubleshooting ).
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Q.
Is the diagnosis code set?
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Perform the relevant troubleshooting.
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Check if the diagnosis code No. U0126 is set to other ECU.
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Q.
Is diagnosis code set?
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Replace the steering wheel sensor (Refer to GROUP 35C - Steering Wheel Sensor ).
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Q.
Is diagnosis code No.U0126 set?
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Replace the ACC/FCM-ECU (Refer to ).
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
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