Toyota Celica 2005 Repair Manual page 688

TYPICAL ENABLING CONDITIONS
Item
The monitor will run whenever these
DTCs are not present
Either of the following conditions is met:
A. Following conditions are met:
(a) Engine speed
(b) Battery voltage
B. Following conditions are met:
(a) Engine speed
(b) Battery voltage
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
"Ignition signal fail count"
Condition when "ignition signal fail count" works:
COMPONENT OPERATING RANGE
Confirmed signal number equals to ignition signal number
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
Minimum
−
6 V
500 rpm
10 V
IGF should have returned despite sending IGT.
Standard Value
687
Specification
See page DI−295
A or B
(a) and (b)
(a) and (b)
Threshold
More than 2 times
DI−489
Maximum
500 rpm
−
−
−