Lambda sensor

In order to improve the safety of the occupants of the vehicle in the case of an impact the vehicle is equipped with a switch located at the side of the driver's seat on the left hand side which comes into operation if the vehicle suffers a violent impact interrupting the connection to earth of the electric fuel pump and consequently cutting off the supply to the injection system.

To restore the connection to earth for the electric fuel pump, press the switch until it is heard enagaging.

LAMBDA SENSOR

The Lambda sensor is the 4 wire heated type. It is located on the exhauast pipe and is connected to the control unit via the 4 pin connector shown in the diagram.

Recovery

The control unit activates the operating strategy in open-loop

Checking the resistance

The sensor heater resistance can be measured by disconnecting the connector and connecting an ohmmeter as shown in the diagram.

Resistance 4.5 ± 0.5 ohm at 20 °C

Wiring connector

The numbers indicate the corresponding control unit pins