DTC P0571: Notes
DETECTION CONDITION AND POSSIBLE CAUSE (DTC P0571)
| DTC P0571 |
Brake switch circuit problem |
| DETECTION CONDITION |
- The PCM monitors changes in 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 comes on.
- PENDING CODE is available if the PCM detects the above malfunction condition.
- FREEZE FRAME DATA is available.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Brake switch malfunction
- Connector or terminal malfunction
- Open circuit in wiring harness between brake switch terminal A and PCM terminal 1AF
- Open circuit in wiring harness between brake switch terminal C and body ground
- Open circuit in wiring harness between battery positive terminal and brake switch terminal B
- Open circuit in wiring harness between brake switch terminal D and PCM terminal 1AB
- Short to ground in wiring harness between brake switch terminal D and PCM terminal 1AB
- Short to power supply in wiring harness between brake switch terminal D and PCM terminal 1AB
- Short to ground 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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