Toyota Celica 2005 Repair Manual page 234

3. EVAP MONITOR (VACUUM PRESSURE MONITOR)
NOTICE:
A cold soak must be performed prior to conducting the drive pattern to complete the Internal Pres-
sure Readiness Monitor.
(a) Cold Soak Preconditions
The monitor will not run unless:
MIL is OFF
S
Fuel level is approximately 1/2 to 3/4
S
Altitude is 7,800 feet (2,400m) or less
S
(b) Cold Soak Procedure
Let the vehicle cold soak for 8 hours or until the difference between IAT and ECT becomes less than
7°C (13°F)
HINT:
Examples:
Scenario 1
S
ECT = 24°C (75°F)
IAT = 16°C (60°F)
Difference between ECT and IAT is 8°C (15°F)
→ The monitor will not run because difference between ECT and IAT is greater than 7°C (13°F)
Scenario 2
S
ECT = 21°C (70°F)
IAT = 20°C (68°F)
Difference between ECT and IAT is 1°C (2°F)
→ The monitor will run because difference between ECT and IAT is less than 7°C (13°F)
4. EVAP MONITOR (VACUUM PRESSURE MONITOR) (CONTINUED)
3,000 rpm
Idling
Ignition OFF
2005 CELICA (RM1131U)
DIAGNOSTICS
Soak
10 sec.
Warmed up
− ENGINE (1ZZ−FE)
15 to 50 min.
(When the readiness code or diagnostic code
is set, this test is completed.)
233
DI−35
A18910