Diagnostic Method: Notes
| (A) | ECM |
| (B) | Vacuum Pump |
| (C) | Switching Valve |
| (D) | Solenoid valve for secondary purge |
| (E) | Pressure Sensor |
| (F) | Mode |
| (1) | Activated by soak timer |
| (2) | OFF |
| (3) | ON |
| (4) | OFF: Open orifice side |
| (5) | ON: Close Evap. side |
| (6) | Close |
| (7) | Open |
| (8) | Evap. System target pressure calculation |
| (9) | Tank pressure (P tank) |
| (10) | Judge the leak is occurred or not by comparing the pressures. |
| (11) | Reference pressure (P ref) |
| (12) | Mode A |
| (13) | Mode B |
| (14) | Mode C |
| (15) | Mode D |
| (16) | Mode D2 |
| (17) | Mode E |
| Mode | Explanation of Mode | DTC | Diagnosis period |
|---|---|---|---|
| A | Vacuum pump operation confirmation and characteristics stability | P2404 | 7 s or less |
| B | Measurement of reference pressure for setting the target negative pressure | P2404 | 350 s or less |
| C | Switching valve operation confirmation | P2404 | 12 s or less |
| D | Clogging of pipe diagnosis and leak pressure measurement | P1451 | 1100 s or less |
| D2 | Check valve open stuck | P04AE | 30 s or less |
| E | 0.04 inch leak pressure measurement | P0455 | 50 s or less |
| 0.02 inch leak pressure measurement | P0456 | ||
| Reference pressure measurement for judgment | P2401 |