DTC P0571: Notes

DTC P0571	Brake switch circuit problem
DETECTION CONDITION	The PCM monitors changes in input voltage for brake switch No. 1 and No. 2 (signal from instrument cluster). If the PCM detects that both brake switches No. 1 and No. 2 remain on or off for 15 s, it determines that the brake switch circuit has a malfunction. Diagnostic support note  This is a continuous monitor (Other). MIL does not comes on. PENDING CODE is available if PCM detects the above malfunction condition. FREEZE FRAME DATA is not available. DTC is stored in PCM memory.
POSSIBLE CAUSE	Brake switch malfunction Open circuit between brake switch terminal B and instrument cluster terminal 2M Open circuit between brake switch terminal C and body ground Short to power between brake switch terminal B and instrument cluster terminal 2M Short to ground circuit between brake switch terminal B and instrument cluster terminal 2M Communication error between PCM and instrument cluster PCM malfunction
Courtesy of MAZDA MOTORS CORP.

*1: LF MTX, L3 and California emission regulation applicable model with LF ATX

*2: Except for California emission regulation applicable model with LF ATX