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Home >> Infiniti >> 2006 >> G35 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0643 To P2A03 (Sedan) >> DTC P1574 ASCD Vehicle Speed Sensor >> On Board Diagnosis Logic

On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic. 

The MIL will not light up for this diagnosis. 

NOTE:
  • If DTC P1574 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".
  • If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to "DTC P0500 VSS "
  • If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to "DTC P0605 ECM "
DTC DETECTING CONDITION

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1574
1574		 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.)

  • Combination meter
  • VDC/TCS/ABS control unit
  • Wheel sensor
  • TCM (A/T models)
  • ECM
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