DTC C0040:29 [Advanced Keyless Entry And Push Button Start System]: MZI-3.7

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
Courtesy of MAZDA MOTORS CORP.