Toyota 2GR-FE Manual page 522

ES–366
10
INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)
Component Side:
+B
C15
Bank 1
A1A-
A/F Sensor Front View
ES
+B
C35
Bank 2
A2A-
A/F Sensor Front View
OK
11
INSPECT FUSE (A/F FUSE)
OK
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) Disconnect the C15 or C35 A/F sensor connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance (Bank 1 sensor 1)
HA1A
Tester Connection
HA1A (1) - +B (2)
HA1A (1) - A1A- (4)
Standard resistance (Bank 2 sensor 1)
A1A+
Tester Connection
HA2A (1) - +B (2)
HA2A (1) - A2A- (4)
(c) Reconnect the A/F sensor connector.
HA2A
NG
A2A+
A126269E11
(a) Remove the A/F fuse from the integration relay.
(b) Measure the A/F fuse resistance.
Standard resistance:
Below 1 Ω
(c) Reinstall the A/F fuse.
NG
Condition
20°C (68°F)
Always
Condition
20°C (68°F)
Always
REPLACE AIR FUEL RATIO SENSOR (See
page EC-19)
REPLACE A/F FUSE
Specified Condition
1.8 Ω to 3.4 Ω
10 kΩ or higher
Specified Condition
1.8 Ω to 3.4 Ω
10 kΩ or higher