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DTC U0423 00: Can System Communication Error: Notes

DTC U0423 00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC U0423:00  CAN system communication error 
DETECTION CONDITION 
  • Error detected in signal from instrument cluster via CAN communication
FAIL-SAFE FUNCTION 
  • Control enabled
    • If the EPS CM detects the signal that a engine speed is below the specified value, it disables assistance
  • Power steering malfunction indicator light: Not illuminated
    • If the EPS CM detects the signal that a engine speed is below the specified value, it illuminates the power steering malfunction indicator light
POSSIBLE CAUSE 
  • EPS CM detects the signal that a engine speed is below the specified value
  • Abnormal engine switch status is detected
  • PCM malfunction
  • Instrument cluster malfunction
SYSTEM WIRING DIAGRAM  -