Toyota 2GR-FE Manual page 546

ES–390
Air-fuel Ratio Sensor Output:
Active A/F Ratio Control
A/F Sensor Output
ES
Fuel Injection Volume
CONFIRMATION DRIVING PATTERN
HINT:
Performing this confirmation pattern will activate the A/F sensor response monitor.
Vehicle Speed
Between
25 mph and 75 mph
(40 km/h and 120 km/h)
Ignition Switch OFF
1. Connect an intelligent tester to the DLC3.
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
OFF
Decrease
(A)
Idling
Warming up
Tester
Display
Approximately 10 seconds
Normal
Increase
(B)
3 minutes
G034992E01
ON
Malfunction
Time
G034991E09
A079199E49