Toyota Celica 2005 Repair Manual page 294

TYPICAL ENABLING CONDITIONS
Item
The monitor will run whenever this DTC is
not present
Case 1 (When temperature is fixed between 35_C (95_F) and 60_C (140_F)):
Cumulative idle off period
Speed increase to 30 km/h (18.6 mph) or
more
Engine coolant temperature
Intake air temperature
Case 2 (When temperature is fixed at 60_C (140_F) or more):
Engine coolant temperature
Intake air temperature
Stop and go
Steady driving and stop *
*: Vehicle is driven at 65 km/h (40 mph) or more for 30 sec. or more and the vehicle speed reaches 70 km/h
(44 mph). The vehicle is decelerated from 65 km/h (40 mph) to 3 km/h (2 mph) or less within 35 sec. and
stopped for 10 sec.
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
Case1 (When temperature is fixed between 35_C (95_F) and 60_C (140_F)):
Change of engine coolant temperature value
Case2 (When temperature is fixed at 60_C (140_F) or more):
Change of engine coolant temperature value
COMPONENT OPERATING RANGE
Engine coolant temperature changes with the actual engine coolant temperature
INSPECTION PROCEDURE
HINT:
If DTCs P0115 and P0125 are output simultaneously, the engine coolant temperature sensor circuit
S
may be open or shorted. Perform the troubleshooting of DTC P0115 first.
Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records
S
the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can
help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air−fuel
ratio was lean or rich, as well as other data from the time when a malfunction occurred.
Replace engine coolant temperature sensor.
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (1ZZ−FE)
Minimum
250 sec.
10 times
35_C (95_F)
−6.7_C (20_F)
60_C (140_F)
−6.7_C (20_F)
Once or more (Stop for 20 sec. or more and accelerate to more than 70 km/h (43 mph)
Standard Value
293
Specification
Maximum
See page DI−3
60_C (140_F)
104.4_C (220_F)
within 40 sec.)
Once or more
Threshold
Less than 3_C (5.4_F)
1_C (1.8_F) or less
DI−95
−
−
−
−