EVAP Purge Valve Test
WARNING: This page is about a different variant/trim than selected.
In event four of the EVAP system diagnostic, the purge solenoid is turned ON, OPEN, causing a drop in negative pressure. If the FTP sensor does not detect a significant decrease in vacuum pressure, a DTC P0441 will set.
| Diagnostic Event Sequence | Event Three | Event Four |
| EVAP Purge Solenoid | OFF/OPEN | ON/OPEN |
| EVAP Vent Solenoid | ON/CLOSED | ON/CLOSED |
| Vacuum Leak Pump | ON | ON |
| FTP Sensor | Negative Pressure Increase and Hold | Negative Pressure is Released |