Toyota Celica 2005 Repair Manual page 694

Heated Oxygen Sensor Signal Length
Sensor Output
Voltage
MONITOR STRATEGY
Required sensors/components (main)
Required sensors/components (related)
Frequency of operation
Duration
MIL operation
Sequence of operation
TYPICAL ENABLING CONDITIONS
Item
These DTCs are not present
Accumulated time that all of the following
conditions are met:
Battery voltage
Intake air temperature
Idle status
Intake air amount
Engine RPM
Engine coolant temperature
Catalyst temperature (M/T)
Catalyst temperature (A/T)
Fuel system status
TYPICAL MALFUNCTION THRESHOLDS
Catalyst deterioration level
Frequency of detection
2005 CELICA (RM1131U)
DIAGNOSTICS −
Front and rear heated oxygen sensors
Once per driving cycle
90 sec
2 driving cycles
None
Minimum
11 V
−10_C (14_F)
8 g/sec.
−
75°C (167°F)
500_C (932_F)
480_C (896_F)
693
ENGINE (2ZZ−GE)
Signal Length
Time
Specification
See page DI−295
30 sec
OFF
Closed loop
M/T: 0.5 or more
A/T: 0.45 or more
3 times
DI−495
A20598
Maximum
−
−
25 g/sec.
4,500 rpm
−
900_C (1652_F)
750_C (1382_F)