Electrical/Electronic Circuit; Wiring; Layout Of System Earth Points - Fiat 1998 Marea Service Manual

Engine
Fuel system
10.

ELECTRICAL/ELECTRONIC CIRCUIT

vehicle side wiring (A)
supply from battery
supply from ignition switch
fuses
system relay feeds
radiator fan relay(s)
climate control compressor relay (if fitted)
CODE control unit connection
on board panel connection
diagnostic equipment
16
Marea- Marea Weekend ft

Wiring

The system has two distinct sets of wiring for
the control unit connectors: the engine side
wiring (B) connects the components fitted on
the engine to the engine control unit, the vehi-
cle side wiring (A), on the other hand, con-
nects the other components to the control unit
and constitutes the interface with the vehicle
wiring.
4F016PJ01
engine side wiring (B)
engine rpm sensor
absolute pressure and air temperature sensor
coolant temperature sensor
detonation sensor
Lambda sensor
power assisted steering end of travel sensor
injectors
idle speed actuator/butterfly position sensor
ignition coil
charcoal filter solenoid valve

Layout of system earth points

In order to improve the electro-magnet com-
patibility and functional reliability, special care
has been taken over the number and location
of the earth points, as illustrated in the diagram
below:
- main earth directly on battery negative;
- engine control system earth on cylinder
block/crankcase near the detonation sensor.
99 range
Print n° 506.763/14