Operation Manual

Specification Desc./Quantity
11 Electric fan starter
The Lambda sensor or oxygen sensor is a sensor which provides indications concerning the oxygen
content in the exhaust gas. The signal generated is not of the proportional type but of the ON/OFF type,
i.e. there is oxygen or there is not. The sensor is positioned on the exhaust manifold before the catalytic
converter in an area where the gas temperature is always high. The temperature at which the sensor
works is at least 350°C at 600°C and it has a reaction time of just 50 milliseconds. The signal generated
passes from a high value to a low value with a mixture with lambda =1. Since the sensor only works at
high temperatures, it has an electric preheating element inside it, controlled by the control unit, to take
it quickly to the functioning state.
Specific tooling
020481Y Control unit interface wiring
020331Y Digital multimeter
Check the efficiency of injection load 15 A fuse No.
5.
Check the efficiency of live control unit power sup-
ply 7.5A fuse No. 10 .
Check there is voltage between pins 21 and 26 of
the interface wiring, for around two seconds, when
switching to «ON».
MP3 250 i.e. Injection
INJEC - 43