Toyota 2GR-FE Manual page 366

ES–210
Reference (System Diagram of Bank 1 Sensor 1):
From
Battery
From
EFI
ES
Relay
OK
14
REPLACE AIR FUEL RATIO SENSOR
NEXT
15
PERFORM CONFIRMATION DRIVING PATTERN
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
A/F Relay
A/F
(a) Replace the air fuel ratio sensor (See page EC-19).
(a) Connect the intelligent tester to the DLC3 (Procedure A).
(b) Turn the ignition switch on (IG) and turn the tester on
(c) Clear the DTCs (See page ES-45) (Procedure C).
(d) Select the check mode using the tester (See page
(e) Start the engine and warm it up with all the accessories
(f)
A/F Sensor
Heater
+B HA1A
Sensor
A1A- A1A+
NG
REPAIR OR REPLACE HARNESS OR
CONNECTOR
(Procedure B).
49) (Procedure D).
switched off (Procedure E).
Drive the vehicle at between 38 mph and 75 mph (60
km/h and 120 km/h) and at an engine speed of between
1,400 rpm and 3,200 rpm for 3 to 5 minutes (Procedure
F).
ECM
HA1A
A1A+
Duty
Control
A1A-
A133850E04
ES-