EVAP Control System Monitor
WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P0441 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | IAT sensor, ECT sensor, Barometric pressure sensor, MAF sensor, VSS, IAC system |
| Monitoring Duration | Max. 21.4 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P0456 (very small leak) |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 695 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P1420 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 245 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P1421 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 245 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P1422 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 95 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P1424 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 95 sec. |
EVAP CONTROL SYSTEM MONITOR OPERATION TABLE
| DTCs | P1425 |
| Monitor execution | Once per driving cycle |
| Sensors / components OK | ECM check sum and RAM for driving conditions before engine off |
| Monitoring Duration | 100 sec. |
ENABLE CONDITIONS TABLE
| Parameter | Minimum | Maximum |
|---|---|---|
| Phase 1 (EVAP purge estimation check) | ||
| Fuel system status | Closed loop | |
| Idle SW | Off | |
| Engine coolant temp. | 60°C (140°F) | |
| Engine load | Level load | |
| Engine speed | 1200 r/min | 4400 r/min |
| Vehicle speed | 16 mph | 81 mph |
| Intake air temp. | -10°C (14°F) | |
| Battery voltage | 10 V | 16 V |
| Catalyst system monitor | Not activated | |
| Purge valve control | On | |
| Canister purge circuit continuity | Normal condition or not monitored | |
| Phase 2 (Monitoring test) | ||
| Purge gas estimation at STAGE 1 | -3% | 3% |
| Time from engine start | 5 sec. | |
| Canister purge accumulation | 11.2 L | |
| Fuel system status | Closed loop | |
| Idle SW | On | |
| ECT | 70°C (158°F) | |
| Engine speed | 400 r/min | 900 r/min |
| Vehicle speed | - | 1 mph |
| Calculated load value change | - | 11% |
| IAT | -10°C (14°F) | - |
| Battery voltage | 10 V | 16 V |
| Time from ISC Closed loop | 4 sec. | - |
| Canister purge circuit continuity | Normal condition or not monitored | |
TYPICAL MALFUNCTION THRESHOLDS TABLE
| P0441 |
| Sum of fluctuation factor of engine speed < 37.5 r/min |
| P0456 |
| EVAP system minimum pressure - Reference pressure > 0 kPa |
| P1420 |
| EVAP system maximum pressure - Reference pressure < 0.2 kPa |
| EVAP system minimum pressure - Reference pressure ≥-0.2 kPa |
| P1421 |
| EVAP system maximum pressure - EVAP system minimum pressure < 0.2 kPa |
| EVAP system minimum pressure - Reference pressure < -0.2 kPa |
| P1422 |
| Initial pressure - Reference pressure < 0.2 kPa |
| P1424 |
| Initial pressure - Reference pressure > 4.5 kPa |
| P1425 |
| 0.2 ≤ Initial pressure - Reference pressure < 1.0 kPa |
TYPICAL MALFUNCTION THRESHOLDS TABLE
| Test item (related DTC) | Test value | Description | Scaling | |
|---|---|---|---|---|
| TID | CID | |||
| EVAP Control System (P0441) | $44 | $00 | Calculated purge density | (N-$8000)*5/256% |
| $44 | $81 | Calculated purge density | (N-$8000)*5/256% | |
| $44 | $90 | Deviation of RPM | N*12.5/Nx12.5 RPM | |
| $44 | $A0 | Correction coefficient of lambda | N/32768 | |
| $44 | $A1 | Correction coefficient of lambda | N/32768 | |
| Very small leak (P0456) | $45 | $00 | Pressure of fuel tank | (N-$8000)*5/256 mm Hg |