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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). After
repairing the CAN bus line, go to Step 2.
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Q.
Is diagnosis code No.C121A set?
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This diagnosis is complete.
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Perform calibration of the steering wheel sensor (Refer to GROUP 35C - On-vehicle
Service).
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Q.
Has the calibration succeeded?
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Replace the steering wheel sensor (Refer to GROUP 35C - Steering Wheel
Sensor). Then, go to Step 4.
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Q.
Is diagnosis code No.C121A set?
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Replace the AWC-ECU (Refer to ). Then, go
to Step 5.
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent
Malfunction).
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Q.
Is diagnosis code No.C121A set?
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This diagnosis is complete.
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