DTC P0703: Notes
DTC P0703 DETECTION & CONDITION POSSIBLE CAUSES
| DTC P0703 |
Brake switch input circuit problem |
| DETECTION CONDITION |
- The PCM monitors the input signal from the brake switch when the following conditions are met. If the input signal does not change while alternately accelerating and decelerating 8 times, the PCM determines that there is a brake switch input circuit malfunction.
MONITORING CONDITION
- Vehicle speed: decelerating more than 30 km/h {19 mph}
to 0 km/h {0 mph}
- Deceleration: more than 4 km/h {2 mph} per s
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
- 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 4P
- Short to ground in wiring harness between brake switch terminal A and PCM terminal 4P
- Open circuit in wiring harness between brake switch terminal C and ground
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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