Canister Purge Valve Circuit Monitor
OPERATION
| DTC | P0443 |
| Monitor execution | Continuous |
| Monitoring duration | 5 sec. |
ENABLE CONDITIONS
| Parameter | Min. | Max. |
|---|---|---|
| Phase 1 | ||
| Engine speed | 500 RPM | - |
| Canister purge valve duty | 10% | 90% |
| Phase 2 | ||
| Engine speed | 500 RPM | - |
| Canister purge valve duty | 0% | |
| Phase 3 | ||
| Canister purge valve duty | 10% | - |
| Phase 4 | ||
| Canister purge valve duty | - | 90% |
TYPICAL MALFUNCTION THRESHOLDS
| Phase 1: | No monitor signal change |
| Phase 2: | Monitor signal voltage < 6 V |
| Phase 3: | EVAP purge valve monitor current > 3.5 A |
| Phase 4: | Monitor signal voltage < 3 V |