Toyota 2GR-FE Manual page 536

ES–380
Reference (System Diagram of Bank 1 Sensor 1):
From
Battery
From
EFI
ES
Relay
OK
REPLACE ECM (See page ES-518)
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
A/F Relay
A/F
A/F Sensor
Heater
+B HA1A
Sensor
A1A- A1A+
NG
REPAIR OR REPLACE HARNESS OR
CONNECTOR
ECM
HA1A
A1A+
Duty
Control
A1A-
A133850E02