Air Fuel Ratio (A/F) Sensor (Sensor-1)

Air Fuel Ratio (A/F) Sensor (Sensor-1) Removal and Installation

REMOVAL

WARNING: To avoid danger of being burned, do not touch exhaust system when system is hot. A/F sensor removal should be performed when system is cool.

1. Disconnect negative cable from battery.




2. Remove left or right bank of A/F sensor as follows:
- For left bank
a. Remove exhaust manifold cover from exhaust manifold.
b. Detach A/F sensor connector from bracket and then disconnect connector from A/F sensor.
c. Remove A/F sensor from exhaust manifold.

- For right bank
a. Remove battery and battery tray from vehicle body.
b. Detach A/F sensor connector from bracket and then disconnect connector from A/F sensor.
c. Remove EGR pipe from exhaust manifold.
d. Remove A/F sensor from exhaust manifold.

NOTE:
Be careful not to expose it to excessive shock.

INSTALLATION
Reverse removal procedure noting the followings.




- Tighten A/F sensor to specified torque.

Tightening torque
A/F sensor a: 45 N.m (4.5 kg-m, 32.5 lb-ft)

- Connect connector of A/F sensor and clamp wire harness securely.
- Install new gasket to EGR pipe.
- After installing A/F sensor, start engine and check that no exhaust gas leakage exists.