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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 C1931: 4WAS Front Control Unit Communication >> 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 Items (CONSULT screen terms) Diagnostic item is detected when... Possible cause
C1931 4WAS FRONT ECU COMM 4WAS communication line(1) data communication error is detected. (An error signal is detected from 4WAS front control unit.) 4WAS communication line(1)/4WAS front control unit/4WAS main control unit error
(1) Communication line between 4WAS front control unit and 4WAS main control unit.
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