Diagnostic Method
When the purge control solenoid valve is duty controlled in the boost region where negative pressure is generated in the intake manifold, negative pressure reaches the CPC pressure sensor as pulsation.
ECM integrates the amount of change of the pulsation, judges as OK when it is equal to or more than the predetermined value, and judges as NG when it is less than the predetermined value.
Judge as NG when the following conditions are established.
JUDGMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| <High pressure side pressure system> Pressure pulsation valve |
Less than value of Map1 | P04F0 |
| <Low pressure side pressure system> Pressure pulsation valve |
Less than value of Map2 | P04F1 |
ATMOSPHERIC PRESSURE SPECIFICATION - MAP 1
| Atmospheric pressure (kPa (mmHg, inHg)) | 70 (525.1, 20.7) | 80 (600.2, 23.6) | 90 (675.2, 26.6) | 100 (750.2, 29.5) | 110 (825.2, 32.5) |
|---|---|---|---|---|---|
| Purge pulsation pressure (kPa (mmHg, inHg)) | 5.31 (39.8, 1.6) | 6.38 (47.9, 1.9) | 7.44 (55.8, 2.2) | 8.5 (63.8, 2.5) | 8.5 (63.8, 2.5) |
ATMOSPHERIC PRESSURE SPECIFICATION - MAP 2
| Atmospheric pressure (kPa (mmHg, inHg)) | 70 (525.1, 20.7) | 80 (600.2, 23.6) | 90 (675.2, 26.6) | 100 (750.2, 29.5) | 110 (825.2, 32.5) |
|---|---|---|---|---|---|
| Purge pulsation pressure (kPa (mmHg, inHg)) | 25.05 (187.9, 7.4) | 26.7 (200.3, 7.9) | 28.35 (212.7, 8.4) | 30 (225.1, 8.9) | 30 (225.1, 8.9) |
Time needed for diagnosis: 1620 ms
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.