Mode E (Measurement of reference pressure for judgement)
WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
- Purpose: Judge the reference pressure stability.
Judge as NG when the following conditions are established.
JUDGMENT VALUE REFERENCE CHARTMalfunction Criteria Threshold Value DTC Elapsed time after mode change ≥ 40s P2404 |Pressure sensor maximum output value - Pressure sensor minimum output value| > 0.3 kPa (2.355 mmHg, 0.1 inHg) - Purpose: Judge whether the reference pressure is within the normal range, and detect the vacuum pump and orifice malfunctions. Judge the vacuum pump performance stability.
Judge as NG when the following conditions are established.
JUDGMENT VALUE REFERENCE CHARTMalfunction Criteria Threshold Value DTC When any one of the followings is established. P2404 - Reference pressure for judgement
< Value of Map 5
or
> Value of Map 6- |Reference pressure for setting the target negative pressure - Reference pressure for judgement|
> 0.9 kPa (7.058 mmHg, 0.3 inHg) PRESSURE SPECIFICATION CHARTAtmospheric pressure kPa (mmHg, inHg) 70 (525, 20.7) 80 (600, 23.6) 90 (675, 26.6) 100 (750, 29.5) Reference pressure for judgement kPa (mmHg, inHg) -4.5 (-34.02,-1.3) -4.6 (-34.815,-1.4) -4.7 (-35.618, -1.4) -4.9 (-36.42,-1.4) PRESSURE SPECIFICATION CHARTAtmospheric pressure kPa (mmHg, inHg) 70 (525, 20.7) 80 (600, 23.6) 90 (675, 26.6) 100 (750, 29.5) Reference pressure for judgement kPa (mmHg, inHg) -0.8 (-6.18,-0.2) -0.9 (-6.983, -0.3) -1 (-7.785, -0.3) -1.1 (-8.58,-0.3) - Purpose: Judge the presence of evaporative emission system leak.
Judge as NG when the following conditions are established.
JUDGMENT VALUE REFERENCE CHART
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| < Large leak (0.04 inch) > | P0455 | |
| Leak pressure | > Reference pressure for judgement and | |
| lleakjdg = (Reference pressure for judgement) x 0.377 -(-0.341) | ≥ lleakjdg | |
| < Very small leak (0.02 inch) > | P0456 | |
| Leak pressure | > Reference pressure for judgement and < lleakjdg |
Time Needed for Diagnosis: Approx. 23 min
- Abnormality Judgment
At next engine start, confirm whether the enable conditions are satisfied even though refueling has been done during soaking, and determine the malfunction.
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
At next engine start, confirm whether the enable conditions are satisfied even though refueling has been done during soaking, then, if the following conditions are established, judge as OK and clear the NG.
JUDGMENT VALUE REFERENCE CHART
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| NG flag | Not set | P0455 P0456 P1451 P2404 |