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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 261 (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

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
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
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