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M56 Base
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Steering Control System (With 4WAS)
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DTC/Circuit Diagnosis
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DTC C1633: 4WAS Front Control Unit
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DTC Logic
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DTC Detection Logic
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DTC Detection Logic
DTC
Display Item
Malfunction detected condition
Possible cause
C1633
CONTROL UNIT
An error is detected inside 4WAS front control unit.
4WAS front control unit error