DTC P0571:00: Notes
DTC P0571:00 (L3 WITH TC) DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0571:00 |
Brake switch circuit malfunction |
| DETECTION CONDITION |
- The PCM monitors the change in 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,
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.
- DTCs are stored in the PCM memory.
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| POSSIBLE CAUSE |
- Brake switch connector or terminals malfunction
- Brake switch malfunction
- Short to ground or open circuit in brake switch power supply circuit
- Short to ground in wiring harness between battery positive terminal and brake switch terminal B
- STOP 10 A fuse malfunction
- Open circuit in wiring harness between battery positive terminal and brake switch terminal B
- Short to ground in wiring harness between brake switch terminal D and PCM terminal 1 AB
- PCM connector or terminals malfunction
- Short to power supply in wiring harness between brake switch terminal D and PCM terminal 1 AB
- Open circuit in wiring harness between brake switch terminal D and PCM terminal 1AB
- Open circuit in wiring harness between brake switch terminal C and body ground
- Short to ground in wiring harness between brake switch terminal A and PCM terminal 1AF
- Short to power supply in wiring harness between brake switch terminal A and PCM terminal 1 AF
- Open circuit in wiring harness between brake switch terminal A and PCM terminal 1AF
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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