Detection Condition
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
PCM determines Vehicle Speed Sensor (VSS) circuit has a malfunction when following conditions are detected:
- With ABS/TCS -
Wheel speed signal from ABS/DSC HU/CM is less than 2.3 MPH when following conditions are met:
- Engine speed is 2000 RPM or more
- Load is more than 40 percent
- Neutral switch and clutch switch are off (MTX)
- Shift range in any position except P, N or R range (ATX)
- ATX Without ABS/TCS - Vehicle speed signal from TCM is incorrect. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for same malfunction has been stored in PCM. PENDING CODE is available if PCM detects malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.