HO2S-1 and HO2S-2 Removal and Installation

Removal

CAUTION:

Touching exhaust system components when they are still hot may cause burns.

Check that the exhaust system has cooled down before removing the HO2S.

1)Disconnect negative (–) cable at battery.

2)Remove engine cover.

3)Disconnect connector of HO2S-1 or HO2S-2 and release its wire harness from clamps.

4)Remove HO2S-1 (1) from catalytic converter.

5)Hoist vehicle and remove engine undercover.

6)Remove HO2S-2 (2) from catalytic converter.

Installation

Reverse removal procedure noting the following points.

•Tighten HO2S-1 (1) to specified torque.

Tightening torque

HO2S-1 (a): 45 N·m (4.6 kgf-m, 33.5 lbf-ft)

•Tighten HO2S-2 (2) to specified torque.

Tightening torque

HO2S-2 (b): 45 N·m (4.6 kgf-m, 33.5 lbf-ft)

•Fix each HO2S harness with clamps (3) at yellow mark.

“a”:	1.5 mm (0.06 in.)

•After installation, check exhaust leakage from sensor with engine running.