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Home >> Infiniti >> 2013 >> M56 x >> Repair and Diagnosis >> Steering >> Manual Steering >> Steering Control System (With 4WAS) >> DTC/Circuit Diagnosis >> DTC U1000, U1002: 4WAS Communication Circuit >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC Display Item Malfunction detected condition Possible cause
U1000 CAN COMM CIRCUIT When 4WAS front control unit is not transmitting or receiving 4WAS communication signal for 2 seconds or more. 4WAS communication line(1)/4WAS main control unit/4WAS front control unit error
U1002 SYSTEM COMM (CAN) When 4WAS front control unit is not transmitting or receiving 4WAS communication signal for 2 seconds or less. 4WAS communication line(1)/4WAS main control unit/4WAS front control unit error
(1) Communication line between 4WAS front control unit and 4WAS main control unit