Toyota Celica 2005 Repair Manual page 428

Time after engine start
Fuel tank pressure change before vacuum
introduction
Fuel level
Purge VSV malfunction
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
P0456 (0.02 inch leak):
Both of the following conditios are met:
1. Fuel tank pressure change for 5 sec. when fuel tank pres-
sure is at −2.0 kPa (−15 mmHg) point
2. Fuel tank pressure change for 5 sec. when fuel tank pres-
sure is at −2.7 kPa (−20 mmHg) point
P0442 (0.040 inch leak):
Both of the following conditios are met:
1. Fuel tank pressure change for 5 sec. when fuel tank pres-
sure is at −2.0 kPa (−15 mmHg) point
2. Fuel tank pressure change for 5 sec. when fuel tank pres-
sure is at −2.7 kPa (−20 mmHg) point
MONITOR RESULT
Refer to page DI−3 for detailed information.
The test value and test limit information are described as shown in the following table. Check the monitor
result and test values after performing the monitor drive pattern (see page DI−3).
TID (Test Identification Data) is assigned to each emissions−related component.
S
TLT (Test Limit Type):
S
If TLT is 0, the component is malfunctioning when the test value is higher than the test limit.
If TLT is 1, the component is malfunctioning when the test value is lower than the test limit.
CID (Component Identification Data) is assigned to each test value.
S
Unit Conversion is used to calculate the test value indicated on generic OBD ll scan tools.
S
TID $02: EVAP system − Vacuum monitor
TLT CID
Multiplied by 0.0916
1 $01
(mmHg)
Multiplied by 0.0458 subtract
1 $02 2.93
(mmHg)
Multiplied by 0.0458
0 $03
(mmHg)
Multiplied by 0.0458
0 $04
(mmHg)
2005 CELICA (RM1131U)
DIAGNOSTICS
Unit Conversion
Test value of EVAP VSV:
Determined by fuel tank pressure change
during vacuum introduction
Test value of canister closed valve (CCV)
and bypass VSV:
Determined by fuel tank pressure change
at switching over CCV and bypass VSV
Test value of 0.04 inch leak:
Determined by fuel tank pressure change
Test value of 0.02 inch leak:
Determined by fuel tank pressure change
− ENGINE (1ZZ−FE)
−
Minimum change
−
Not detected
0.067 kPa (0.5 mmHg) or more
0.067 kPa (0.5 mmHg) or more
0.24 kPa (1.8 mmHg) or more
0.24 kPa (1.8 mmHg) or more
Description of Test Data
427
50 min.
90%
Threshold
Condition 1 and 2
Condition 1 and 2
Description of Test Limit
Malfunction criteria for EVAP VSV
Malfunction criteria for CCV and bypass
VSV
Malfunction criteria for 0.04 inch leak
Malfunction criteria for 0.02 inch leak
DI−229