Toyota Celica 2005 Repair Manual page 607

DI−408
MONITOR STRATEGY
Related DTCs
Required sensors/components
Frequency of operation
Duration
MIL operation
Sequence of operation
TYPICAL ENABLING CONDITIONS
Item
The monitor will run whenever this DTC is
not present
Battery voltage
Throttle position learning
Engine coolant temperature at engine
start − Intake air temperature at engine
start
Intake air temperature at engine start
Engine coolant temperature at engine
start
Accumulated time that vehicle speed is
128 km/h (80 mph) or more
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
Duration that both of following conditions 1 and 2 are met:
1. Estimated engine coolant temperature
2. Engine coolant temperature sensor output value
COMPONENT OPERATING RANGE
Parameter
Engine coolant temperature sensor output value after en-
gine is warmed up
2005 CELICA (RM1131U)
DIAGNOSTICS −
P0128
Main sensors/components
Related sensors/components
Once per driving cycle
15 min.
2 driving cycles
None
Minimum
11.0 V
−15_C (−27_F)
−10_C (14_F)
−10_C (14_F)
−
606
ENGINE (2ZZ−GE)
Thermostat
Engine coolant temperature sensor, Engine cool-
ing system, Thermostat
Intake air temperature sensor, Vehicle speed
sensor
Specification
See page DI−295
Completed
Threshold
5 sec. or more
75_C (167_F) or more
Less than 75_C (167_F)
Standard Value
75_C (167_F) or more
Maximum
−
7_C (12.6_F)
35_C (95_F)
35_C (95_F)
20 sec.