Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 10

1GR-FE EMISSION CONTROL  –  AIR FUEL RATIO SENSOR

EC–21

EC

REMOVAL

CAUTION:
•

Wear protective gloves when removing the sensor.

•

The exhaust pipe assembly is extremely hot 
immediately after the engine has stopped.

•

Confirm that the exhaust pipe assembly has cooled 
down before removing it.

1.

DISCONNECT CABLE FROM NEGATIVE BATTERY 
TERMINAL

2.

REMOVE AIR FUEL RATIO SENSOR
(a) Remove the 3 bolts, then remove the No. 2 exhaust 

manifold stay. (for LH Bank)

(b) Disconnect the 2 air fuel ratio sensor connectors.
(c) Using SST, remove the 2 air fuel ratio sensors from 

the exhaust manifold.
SST

09224-00010

INSPECTION

1.

REMOVE AIR FUEL RATIO SENSOR
(a) Check the resistance.

(1) Using an ohmmeter, measure the resistance 

between the terminals.
Standard resistance

If the result is not as specified, replace the air 
fuel ratio sensor.

A128840

A130153

Ohmmeter

A128842E01

Tester Connection

Specified Condition

1 (HT) - 2 (+B)

1.8 to 3.4 

Ω at 20°C (68°F)

1 (HT) - 4 (E)

10 k

Ωor higher

EC–22

1GR-FE EMISSION CONTROL  –  AIR FUEL RATIO SENSOR

EC

INSTALLATION

1.

INSTALL AIR FUEL RATIO SENSOR
(a) Using SST, install the 2 air fuel ratio sensors onto 

the exhaust manifold.
SST

09224-00010

Torque: 44 N*m (449 kgf*cm, 33 ft.*lbf)

(b) Connect the 2 air fuel ratio sensor connectors.

(c) Install the exhaust manifold stay with the 3 bolts. (for 

LH Bank)

2.

CONNECT CABLE TO NEGATIVE BATTERY 
TERMINAL
Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf)

For LH side

For LH side

SST

A130153E01

A128840

1GR-FE EMISSION CONTROL  –  HEATED OXYGEN SENSOR

EC–23

EC

ENGINE

1GR-FE EMISSION CONTROL

HEATED OXYGEN SENSOR

COMPONENTS

OXYGEN SENSOR

OXYGEN SENSOR

N*m (kgf*cm, ft*lbf)  : Specified torque

44 (449, 33)

44 (449, 33)

A129978E01

EC–24

1GR-FE EMISSION CONTROL  –  HEATED OXYGEN SENSOR

EC

REMOVAL

1.

DISCONNECT CABLE FROM NEGATIVE BATTERY 
TERMINAL

2.

REMOVE HEATED OXYGEN SENSOR
(a) Disconnect the 2 heated oxygen sensors 

connectors.

(b) Using SST, remove the 2 heated oxygen sensors 

from the exhaust pipe.
SST

09224-00010

INSPECTION

1.

INSPECT HEATED OXYGEN SENSOR
(a) Check the resistance.

(1) Using an ohmmeter, measure the resistance 

between the terminals.
Standard resistance

SST

For RH side:

For LH side:

A128844E01

Ohmmeter

A128845E01

Tester Connection

Specified Condition

1 (HT) - 2 (+B)

11 to 16 

Ω at 20°C (68°F)

1 (HT) - 4 (E)

10 k

Ω or higher