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DTC P0571: Notes

DTC P0571 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0571 Brake switch circuit malfunction
DETECTION CONDITION 
  • The PCM monitors changes the input voltage for brake switch No.1 and No.2. If the PCM detects that both brake switches No.1 and No.2 remain on or off for 15 s  , the PCM 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.
  • DTC is stored in PCM memory.
POSSIBLE CAUSE 
  • Brake switch malfunction
  • Connector or terminal malfunction
  • Open circuit between brake switch terminal C and body ground
  • Short to ground circuit between brake switch terminal A and PCM terminal 1 AF
  • Open circuit between brake switch terminal A and PCM terminal 1AF
  • PCM malfunction
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