0.02-inch Diagnosis

WARNING: This page is about a different variant/trim than selected.

Mode A: (0 point correction)

Wait until the tank pressure returns to 0 point (0 kPa (0 mmHg, 0 inHg)) when the tank pressure is high. Change to Mode B when the tank pressure becomes 0. Cancel the diagnosis when the tank pressure does not return to 0 point in spite of spending the specified time.

Mode B: (Introduce negative pressure)

Introduce the intake manifold negative pressure to fuel tank. About 0 --> -2.0 kPa (0 mmHg --> -15 mmHg, 0 --> -0.59 inHg)

Change to Mode C when the tank pressure becomes the pressure (desired negative pressure) above. Cancel the diagnosis when the tank pressure does not become the value above.

Mode C: (Hold negative pressure)

Stop introducing the negative pressure and wait the tank pressure returns to the start level of P2 calculation. Change to Mode D when the tank pressure returns to the start level of P2 calculation or when spending the specified time.

Mode D: (Calculation of negative pressure variation)

Monitor the tank pressure on Mode D, and calculate the tank pressure variation (P2) and time until it returns to the end level of P2 (evpdset). When it returns, change to Mode E. Make advanced OK judgment or cancel depending on the P2 level, when it doesn't return in spite of spending the specified time. Judge OK when the criteria below are completed.

Judgment Value

JUDGMENT VALUE REFERENCE

Malfunction Criteria	Threshold Value
Advanced OK judgment #1
Mode D time	>/= 30s
Tank pressure	</=-1.79 kPa (-13.4 mmHg, -0.53 inHg)
Advanced OK judgment #2
Mode D time	>/= 200s
P2	</= 0.93 - 1.28 kPa (7- 9.6 mmHg, 0.28 -0.38 inHg)

Mode E: (Calculation of evaporation gas yield)

Calculate the tank pressure variation P1 in time evpdset, judge NG/OK from P1 value. (Gray judgment possible)

Abnormal judgment

Judge NG when the criteria below are completed.

Judgment Value

JUDGMENT VALUE REFERENCE

Malfunction Criteria	Threshold Value
P1	< Map 7 value * Threshold value: map (fuel level vs evpdset)

Map 7 Limit of malfunction criteria for 0.02-inch leak as EVAP. diagnosis

MAP 7 LIMIT OF MALFUNCTION CRITERIA FOR 0.02-INCH LEAK AS EVAP DIAGNOSIS

Time evpdset & Fuel level	0 second	30 seconds	50 seconds	100 seconds	160 seconds	200 seconds
10 L (2.6 US gal, 2.2 lmp gal)	0 kPa (0 mmHg, 0 inHg)	0.07 kPa (0.5 mmHg, 0.02 inHg)	0.23 kPa (1.7 mmHg, 0.07 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)
20 L (5.3 US gal, 4.4 lmp gal)	0 kPa (0 mmHg, 0 inHg)	0.07 kPa (0.5 mmHg, 0.02 inHg)	0.23 kPa (1.7 mmHg, 0.07 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)
30 L (7.9 US gal, 6.6 lmp gal)	0 kPa (0 mmHg, 0 inHg)	0.07 kPa (0.5 mmHg, 0.02 inHg)	0.23 kPa (1.7 mmHg, 0.07 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)	0.36 kPa (2.7 mmHg, 0.11 inHg)
40 L (10.6 US gal, 8.8 lmp gal)	0 kPa (0 mmHg, 0 inHg)	0.07 kPa (0.5 mmHg, 0.02 inHg)	0.25 kPa (1.85mmHg, 0.07 inHg)	0.33 kPa (2.5 mmHg, 0.10 inHg)	0.33 kPa (2.5 mmHg, 0.10 inHg)	0.33 kPa (2.5 mmHg, 0.10 inHg)
50 L (13.2 US gal, 11.0 lmp gal)	0 kPa (0 mmHg, 0 inHg)	0.07 kPa (0.5 mmHg, 0.02 inHg)	0.27 kPa (2.0 mmHg, 0.08 inHg)	0.31 kPa (2.3 mmHg, 0.09 inHg)	0.31 kPa (2.3 mmHg, 0.09 inHg)	0 kPa (0 mmHg, 0 inHg)