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Home >> Infiniti >> 2010 >> FX50 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (VK50VE) - P1233 Through P2A03 >> DTC P1574: ASCD Vehicle Speed Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:
  • If DTC P1574 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
  • If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to DTC LOGIC .
  • If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC LOGIC .
  • If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to DTC LOGIC .
DTC DETECTION LOGIC TABLE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1574 ASCD vehicle speed sensor ECM detects a difference between two vehicle speed signals is out of the specified range.
  • Harness or connectors (The CAN communication line is open or shorted.)
  • Unified meter and A/C amp.
  • ABS actuator and electric unit (control unit)
  • Wheel sensor
  • TCM
  • ECM