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DTC P0571 [L3 With TC]: Notes

DTC P0571 [L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0571 Brake switch circuit problem
DETECTION CONDITION 
  • The PCM monitors the change in the input voltage for brake switch No. and No..If the PCM detects that both brake switches No. and No. 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).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA is not available.
  • DTCs are 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
G04954397Courtesy of MAZDA MOTORS CORP.
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