NANO

233

ENGINE 273 MPFI

ENGINE

LAMBDA SENSOR

Removal

1. Disconnect battery.

2. Remove rear shelf (Refer Rear Shelf removal

procedure/Body group)

3. Disconnect the electrical connector of lambda

sensor.

4. Remove the hexagonal nut and take out lambda

sensor.

Lambda sensor testing procedure :

(i) Pin Assignment :

(ii) Stand Alone Diagnosis :

Use multimeter to check the resistance of the lambda

sensor.

Resistance measured across Sensor Pin 1 and 2 at

room temperature should be 9 ohms.

Following precautions should be taken while

handling and installing lambda sensor.

1. Do not store lambda sensors under high

temperatures and/or high humidity condition.

2. Do not use impact wrench for installing the sensor.

3. Reject the sensor in case of dropping.

4. Anti-seize compound should be painted on thread

area.

5. Lambda sensor cable should not touch to exhaust

pipes.

6. Do not splash oily liquid on the sensor surface.