DTC P0203: Notes
DTC P0203[L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0203 |
Injector circuit/open cylinder NO. 3 |
| DETECTION CONDITION |
- If the fuel injection verification signal is not input at 255 times
continuously even though the PCM drives fuel injector NO. 3, the PCM determines that there is an open circuit in the fuel injector NO. 3 control circuit.
MONITORING CONDITION
- The following conditions are met:
- Engine speed: 4, 000 rpm or less
- Battery voltage: 10.03 V or more
- Fuel injection control: except during fuel cut
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA is available.
- DTCs are stored in the PCM memory.
|
| POSSIBLE CAUSE |
- Fuel injector NO. 3 malfunction
- Connector or terminal malfunction
- Open circuit between fuel injector NO. 3 terminal B and PCM terminal 2BH
- Open circuit between fuel injector NO. 3 terminal A and PCM terminal 2BD
- Short to power supply between fuel injector NO. 3 terminal A and PCM terminal 2BD
- Short to ground between fuel injector NO. 3 terminal B and PCM terminal 2BH
- Short to ground between fuel injector NO. 3 terminal A and PCM terminal 2BD
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|