Toyota Celica 2005 Repair Manual page 404

TYPICAL ENABLING CONDITIONS
Item
The monitor will run whenever these
DTCs are not present
The same as that for DTC P0442
TYPICAL MALFUNCTION THRESHOLDS
P0441
Detection Criteria
Purge VSV stuck closed:
Fuel tank pressure change during vacuum introduction
Purge VSV stuck open:
Either of the following conditions is met:
1. (Minimum fuel tank pressure before leak check) − (Fuel
tank pressure 14 sec. after leak check)
2. Fuel tank pressure 14 sec. after leak check
P0446
Detection Criteria
Case 1: CCV stuck closed
Fuel tank pressure when the CCV is opened
Case 2: CCV stuck open
Purge VSV stuck closed
Case 3: EVAP VSV stuck closed
Fuel tank pressure after the EVAP VSV is opened and man-
ifold vacuum is introduced to the fuel tank
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (1ZZ−FE)
Minimum
403
Criteria
Maximum
See page DI−3
Threshold
Less than 0.933 kPa (7.0 mmHg)
Condition 1 or 2
0.467 kPa (3.5 mmHg) or more
Less than −3.733 kPa (28 mmHg)
Threshold
No change
Detected
No change
DI−205