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DTC P0722: Notes

DTC P0722 [AW6A-EL, AW6AX-EL] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0722 Vehicle speed sensor (VSS) circuit malfunction (open circuit/short circuit)
DETECTION CONDITION 
  • When all conditions below are satisfied.
    • D range of TR switch input
    • Driving vehicle at vehicle speed of 20 km/h {12 mph} or more 
    • Turbine speed signal 16 pulse input
    • VSS signal not input
  • Normal vehicle speed signal is not input for 0.1 s or more.

Diagnostic support note: 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.
  • A PENDING CODE is not available.
  • FREEZE FRAME DATA is available.
  • The AT warning light illuminates.
  • The DTC is stored in the TCM memory.
POSSIBLE CAUSE 
  • VSS malfunction
  • Open circuit between VSS terminal B and TCM terminal B19
  • Open circuit between VSS terminal A and TCM terminal B20
  • Short to ground in wiring harness between VSS terminal B and TCM terminal B19
  • Short to ground in wiring harness between VSS terminal A and TCM terminal B20
  • Short to power in wiring harness between VSS terminal B and TCM terminal B19
  • Short to power in wiring harness between VSS terminal A and TCM terminal B20
  • Damaged connector between VSS and TCM
  • TCM malfunction
G04860299Courtesy of MAZDA MOTORS CORP.