After Mode D
Assigning P1 and P2, which are tank variations measured in Mode A and Mode B, to the formula below, judge the small leakage of the system. If the measured judgment value exceeds the threshold value, it is judged to be malfunction.
Judge NG when the criteria below are completed and judge OK when not completed.
Judgment Value
JUDGMENT VALUE REFERENCE
| Malfunction Criteria | Threshold Value | DTC | ||
|---|---|---|---|---|
| P2 - 1.5 x P1 P2: Change of tank pressure within 10 seconds on Mode D P1: Change of tank pressure within 10 seconds on Mode A |
> value on Map 7. (1)Threshold value: Figure (Fuel level vs Tank temperature) |
P0442 | ||
|
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Map 7 Limit of malfunction criteria for 0.04-inch leak as EVAP. diagnosis.
MAP 7 LIMIT OF MALFUNCTION CRITERIA FOR 0.04-INCH LEAK AS EVAP DIAGNOSIS
| Fuel temperature & Fuel level | 25°C (77°F) | 30°C (86°F) | 35°C (95°F) | 40°C (104°F) | 45°C (113°F) |
|---|---|---|---|---|---|
| 10 L (2.6 US gal, 2.2 lmp gal) | 0.28 kPa (2.1 mmHg, 0.083 inHg) | 0.29 kPa (2.2 mmHg, 0.087 inHg) | 0.31 kPa (2.3 mmHg, 0.091 inHg) | 0.31 kPa (2.35 mmHg, 0.093 inHg) | 0.32 kPa (2.4 mmHg, 0.094 inHg) |
| 20 L (5.3 US gal, 4.4 lmp gal) | 0.28 kPa (2.1 mmHg, 0.083 inHg) | 0.32 kPa (2.4 mmHg, 0.094 inHg) | 0.33 kPa (2.5 mmHg, 0.098 inHg) | 0.35 kPa (2.6 mmHg, 0.102 inHg) | 0.36 kPa (2.7 mmHg, 0.106 inHg) |
| 30 L (7.9 US gal, 6.6 lmp gal) | 0.39 kPa (2.9 mmHg, 0.114 inHg) | 0.41 kPa (3.05 mmHg, 0.120 inHg) | 0.42 kPa (3.15 mmHg, 0.124 inHg) | 0.43 kPa (3.25 mmHg, 0.128 inHg) | 0.45 kPa (3.35 mmHg, 0.131 inHg) |
| 40 L (10.6 US gal, 8.8 lmp gal) | 0.39 kPa (2.9 mmHg, 0.114 inHg) | 0.42 kPa (3.15 mmHg, 0.124 inHg) | 0.44 kPa (3.3 mmHg, 0.130 inHg) | 0.45 kPa (3.4 mmHg, 0.134 inHg) | 0.47 kPa (3.5 mmHg, 0.138 inHg) |
| 50 L (13.2 US gal, 11.0 lmp gal) | 0.43 kPa (3.2 mmHg, 0.126 inHg) | 0.44 kPa (3.3 mmHg, 0.130 inHg) | 0.47 kPa (3.5 mmHg, 0.138 inHg) | 0.48 kPa (3.6 mmHg, 0.142 inHg) | 0.49 kPa (3.7 mmHg, 0.146 inHg) |
Time Needed for Diagnosis: 30 - 100 seconds