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:
- Brake switch malfunction
- Connector or terminal malfunction
- Open circuit in Black/Orange wire between brake switch 4-pin harness connector terminal "C" and body ground
- Short to ground circuit in Green/Orange wire between brake switch 4-pin harness connector terminal "A" and PCM 104-pin harness connector terminal No. 7
- Open circuit in Green/Orange wire between brake switch 4-pin harness connector terminal "A" and PCM 104-pin harness connector terminal No. 7
- PCM malfunction