IS 250 AWD V6-2.5L (4GR-FSE) (2006)
2. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
a. Using SST, install the sensor to the exhaust manifold RH.
SST 09224-00010
Torque: 40 N.m (408 kgf.cm, 30 ft.lbf)
b. Connect the sensor connector.
3. INSTALL NO. 3 RELAY BLOCK ASSEMBLY
a. Install the exhaust manifold to had gasket shown in the illustration.
b. Install the exhaust manifold sub-assembly LH with the 6 nuts.
Torque: 21 N.m (214 kgf.cm, 16 ft.lbf)
c. Connect the air fuel ratio sensor connector.
4. INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY LH
5. INSTALL ENGINE ROOM RELAY BLOCK ASSEMBLY
6. INSTALL NO. 4 ENGINE WIRE
7. INSTALL NO. 1 RELAY BLOCK COVER