Toyota Celica 2005 Repair Manual page 266

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 these
DTCs are not present
P0031, P0037 (Low current):
Either of the following conditions is met:
1. Following conditions are met:
(a). Time after engine start
(b). Battery voltage
(c). Vehicle speed
(d). Misfire
(e). Pass/Fail detection in this driving
cycle
2. Following conditions are met:
(a). Time after engine start
(b). Battery voltage
(c). Vehicle speed
(d). Misfire
(e). Pass/Fail detection in this driving
cycle
P0032, P0038 (High current):
Intrusive heating is OFF
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
P0031, P0037 (Low current):
Heated oxygen sensor heater current
P0032, P0038 (High current):
Heated oxygen sensor heater current
2005 CELICA (RM1131U)
DIAGNOSTICS −
P0031
P0032
P0037
P0038
Main sensors/components
Related sensors/components
Continuous
0.3 sec.
1 driving cycle
None
Minimum
250 sec.
10.5 V
−
500 sec.
10.5 V
40 km/h (25 mph)
265
ENGINE (1ZZ−FE)
Heated oxygen sensor heater current bank 1
sensor 1 (Low current)
Heated oxygen sensor heater current bank 1
sensor 1 (High current)
Heated oxygen sensor heater current bank 1
sensor 2 (Low current)
Heated oxygen sensor heater current bank 1
sensor 2 (High current)
Heated oxygen sensor
Vehicle speed sensor
Specification
See page DI−3
Condition 1 or 2
Conditions (a), (b), (c), (d) and (e)
Not detected
Not detected
Conditions (a), (b), (c), (d) and (e)
Not detected
Not detected
Threshold
Less than 0.25 A (at 0.2 sec. after heater "ON")
More than 2 A (while intrusive heating is OFF)
DI−67
Maximum
500 sec.
−
96.6 km/h (60 mph)
−
−
−