DTC C0040:29 [Advanced Keyless Entry And Push Button Start System]: MZI-3.7
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION AND POSSIBLE CAUSE
| DETECTION CONDITION |
Brake switch and brake switch 2 link malfunction |
| POSSIBLE CAUSE |
- Connector or terminal malfunction
- Short to ground in wiring harness between brake switch terminal A and PCM terminal 1T
- Short to ground in wiring harness between brake switch terminal B and battery positive terminal
- Short to power supply in wiring harness between brake switch terminal C and PCM terminal 1BK
- Short to power supply in wiring harness between brake switch terminal C and PCM terminal 1BP
- Short to power supply in wiring harness between brake switch terminal D and keyless control module terminal 3S
- Open circuit in wiring harness between brake switch terminal A and PCM terminal 1T
- Open circuit in wiring harness between brake switch terminal B and battery positive terminal
- Open circuit in wiring harness between brake switch terminal C and PCM terminal 1 BK
- Open circuit in wiring harness between brake switch terminal C and PCM terminal 1 BP
- Open circuit in wiring harness between brake switch terminal D and keyless control module terminal 3S
- PCM malfunction
- Brake switch malfunction
- Keyless control module malfunction
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 Courtesy of MAZDA MOTORS CORP.
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