Repair Manual

17
IGNITION AND INJECTION
17 - 17
WARNING!
In case of electric welding on the vehicle, the battery the alternator and the electronic
control unit should be disconnected. In case of fine painting above 85°C, the electronic
control unit should be taken off the vehicle. When remounting the fixing screws of the
control unit should be well secured, in order to ensure a perfect electric contact to the
vehicle chassis.
The cabling connector to the computer won’t be disconnected or reconnected before
interrupting the contact to the engine and disconnecting the battery terminal (-).
The electric correspondence between the 35 pins of the electronic control unit and the
system elements should be according to the Tab le 1 (page 17-29) and to the afferent
electric diagram.
Taking into consideration the special construction of the connectors used for this cabling
system, their disconnection should be done (only after interrupting the contact to the
engine) by pushing the fuse and then by disconnecting it.
The connection should be done carefully; the fuse should assure a perfect fixing and
electric contact of the cable connectors to the system components.
Disconnection mode (according to the instructions):
- electronic control unit: pull the lock (1) arrow sense, hinge the connector and
disconnect (see drawing a);
-rods, induction coil: push the lock (2), then disconnect the connector (see drawing b);
- oxygen sensor: pull the locking valve, then disconnect the connector; front cables
connection: turn the coupling cassette (see drawing c).
Fig. c
Fig. bFig. a
DESCRIPTION OF THE SYSTEM
vnx.su