Possible Causes
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.
Possible causes are:
With ABS/TCS
- ABS/TCS HU/CM malfunction
- Connector or terminal malfunction
- PCM malfunction
MTX Without ABS/TCS
- Connector or terminal malfunction
- Open circuit in Yellow/Red wire between VSS 2-pin harness connector terminal "A" and PCM 104-pin harness connector terminal No. 57
- Open circuit in Gray/Red wire between VSS harness connector terminal "B" and PCM 104-pin harness connector terminal No. 84
- PCM malfunction
- Short to ground circuit in Gray/Red wire between VSS harness connector terminal "B" and PCM 104-pin harness connector terminal No. 84
- Short to ground circuit in Yellow/Red wire between VSS harness connector terminal "A" and PCM 104-pin harness connector terminal No. 57
- Short to power circuit in Gray/Red wire between VSS harness connector terminal "B" and PCM 104-pin harness connector terminal No. 84
- Short to power circuit in Yellow/Red wire between VSS harness connector terminal "A" and PCM 104-pin harness connector terminal No. 57
- VSS malfunction
ATX Without ABS/TCS
- Connector or terminal malfunction
- PCM malfunction
- TCM malfunction