Fiat ULYSSE 2.2 16V JTD fino a 04/03 – ENGINE COOLING – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring Diagram - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

ENGINE COOLING WIRING DIAGRAM Fiat ULYSSE 2.2 16V JTD fino a 04/03

Components - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

Component code	Description	Reference to the assembly
A001	Battery	5530B
B001	Engine compartment junction unit	5505A
C011	Right front earth	-
C020	Passenger dashboard earth	-
H001	Ignition switch	5520A
J030	Engine fan speed 1 relay	-
J031	Engine fan speed 2 relay	-
J032	Engine fan speed 2 relay	-
K036	Engine coolant temperature sensor/sender unit	1056B
K120	Linear sensor (for climate control)	-
M001	Body computer	5505A
M010	Engine management control unit	1060G
N011	Engine fan motor	1088E
N012	Engine fan motor - 2	1088E

Location Components - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

ENGINE COOLING LOCATION COMPONENTS Fiat ULYSSE 2.2 16V JTD fino a 04/03

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Components - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

Component code	Description	Reference to the assembly
A001	Battery	5530B
B001	Engine compartment junction unit	5505A
C011	Right front earth	-
C020	Passenger dashboard earth	-
H001	Ignition switch	5520A
J030	Engine fan speed 1 relay	-
J031	Engine fan speed 2 relay	-
J032	Engine fan speed 2 relay	-
K036	Engine coolant temperature sensor/sender unit	1056B
K120	Linear sensor (for climate control)	-
M001	Body computer	5505A
M010	Engine management control unit	1060G
N011	Engine fan motor	1088E
N012	Engine fan motor - 2	1088E

Description - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

The cooling system for the engine radiator and air conditioning condenser consists of two fans operated at different speeds by means of a connection between them either in series or parallel.the first speed is activated at an initial engine coolant temperature level or a certain air conditioning refrigerant fluid pressure;the second speed is engaged at a higher temperature or pressure.The fans are operated by means of three specific relays located near the radiator.

Operational Description - ENGINE COOLING - Fiat ULYSSE 2.2 16V JTD fino a 04/03

Engine control unit M010 controls the operation of the engine cooling fan according to data supplied by linear sensor K120 and engine coolant sensor K036. Both sensors are connected directly to the engine control unit; K036 to pins E1, D1 connector B, while K120 is connected to pins H4, H2 and F2 of connector A.Control unit M010 operates fans N011 and N012 on the basis of data supplied by both sensors.Operation at first speed: fans in series:The engine management control unit energizes relay J030, pin 2 from pin D4 connector A; the relay coil is supplied by the engine compartment junction unit B001, from pin 14 connector C, by the line protected by fuse F08 and operated by a specific relay.When the relay is energized, it supplies the fans N012 and N011, connected in series, through the line coming from junction unit B001, pin 6 connector G protected by fuse MF6 (relay J031 is not energized and connects the two fans in this way).Operation at second speed: fans in parallel:The engine management control unit energizes relays J030 and J032, pin 2 from pin B2 connector A; the relay coil is supplied by the engine compartment junction unit B001, from pin 10 connector C, by the line protected by fuse F01.When the relay J032 is energized, it supplies the fans N012 and N011, connected in parallel, through the line coming from junction unit B001, pin 1 connector G protected by fuse MF1 (relay J031 is energized and connects the two fans in this way).