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.