DTC P0571:00: Notes
DTC P0571:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES
| DTC P0571:00 |
Brake switch circuit malfunction |
| DETECTION CONDITION |
- The PCM monitors the changes in input voltage for the brake switch No. 1 and No. 2 (signal from the 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).
- The MIL does not illuminate.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
CAUTION:
- Inspect the brake switch with it installed to the brake pedal, otherwise the brake switch may no operate normally. If the brake switch is removed from the brake pedal, replace the brake switch with a new one.
- Brake switch connector or terminals malfunction
- Open circuit in wiring harness between brake switch terminal B and body ground
- Instrument cluster connector or terminals malfunction
- Short to ground in wiring harness between brake switch terminal C and instrument cluster terminal 2N
- Short to power supply in wiring harness between brake switch terminal C and instrument cluster terminal 2N
- Open circuit in wiring harness between brake switch terminal C and instrument cluster terminal 2N
- Brake switch No. 2 malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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