DTC P0500: Notes
DTC P0500 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0500 |
Vehicle speed sensor (VSS) circuit malfunction |
| DETECTION CONDITION |
With ABS/TCS
- If an error in the wheel speed signal from the ABS/DSC HU/CM is detected by CAN when the following conditions are met:
- Shift range in except P, N or R position (ATX)
- Neutral switch and clutch pedal position switch are OFF (MTX)
- Load is above 40%
- Engine speed is 2, 000 RPM or above
- Brake switch is OFF
MTX without ABS/TCS
- Vehicle speed signal from vehicle speed sensor is below 3.7 km/h {2.3 mph}
when following conditions are met:
- Neutral switch and clutch pedal position switch are OFF
- Load is above 40%
- Engine speed is 2, 000 RPM or above
- Brake switch is OFF
Diagnostic support note
- This is a continuous monitor (CCM).
- MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
- PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA is available.
- DTC is stored in PCM memory.
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| POSSIBLE CAUSE |
Without ABS/TCS
- VSS malfunction
- Connector or terminal malfunction
- Open circuit between PCM terminal 2M and VSS terminal A (MTX)
- Open circuit between PCM terminal 2N and VSS terminal B (MTX)
- Short to ground between PCM terminal 2M and VSS terminal A (MTX)
- Short to ground between PCM terminal 2N and VSS terminal B (MTX)
- Short to power supply between PCM terminal 2M and VSS terminal A (MTX)
- Short to power supply between PCM terminal 2N and VSS terminal B (MTX)
- PCM malfunction
With ABS/TCS
- Front ABS wheel-speed sensor malfunction
- ABS/TCS/DSC malfunction
- Connector or terminal malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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