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Use the M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus line. (Refer to GROUP 54C - CAN Bus Trouble Symptom
Chart .) On completion, go to Step 2.
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Q.
Is diagnosis code No. C1394 stored?
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This diagnosis is complete.
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Perform calibration of steering wheel sensor. (Refer to .)
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Q.
Is the check result normal?
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After the steering wheel sensor is replaced (Refer to ),
calibrate the sensor (Refer to ). Then go to Step 4.
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Check again if the diagnosis code is stored.
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(1)Erase the stored diagnosis code.
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(2)Ignition switch: "LOCK" (OFF)
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Q.
Is diagnosis code No. C1394 stored?
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Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
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