Removing-refitting lambda sensor

WHEN WORKING ON A VEHICLE EQUIPPED WITH AN IAW INJECTION/IGNITION SYSTEM, OBSERVE THE FOLLOWING PRECAUTIONS:

• do not start up the engine with the electrical connections not properly connected or slack at the battery terminals;
• do not use a rapid battery charger for starting the engine;
• never disconnect the battery with the engine running;
• when using a rapid battery charger, disconnect the battery first from the electrical system;
• if the vehicle is going in a drying oven after painting, at temperatures in excess of 80°C, the injection/ignition electronic control unit must be removed;
• do not attach or disconnect the multiple connector for the electronic control unit with the ignition switch in the ON position;
• always disconnect the negative battery lead before carrying out electrical welding on the vehicle.

Remember that this system has a memory which is always supplied where the values acquired during auto-adjustment are stored. The operation of disconnecting the battery will result in this information being lost so this operation shoudl, as far as possible, be limited.

REMOVING-REFITTING LAMBDA SENSOR

1. Remove the complete air filter casing acting on the fixing nuts and the band shown.
2. Disconnect the electrical connection (1), then remove the Lambda sensor (2) from its housing on the exhaust pipe.

[!] If the Lambda sensor is being replaced, when refitting apply graphite grease which is resistant to high temperatures to the thread.

Tightening torque 5 - 6 daNm