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Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO Wiring diagram - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
Components - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
Component code | Name | Assembly reference |
B1 | Engine compartment junction unit | |
C1 | Battery earth | - |
D4 | Front/engine connection | - |
D4 | Front/engine coupling | - |
H1 | Ignition switch | |
M10 | Engine management ECU | |
M10 | Engine management control unit | - |
M10 | Engine management control unit | |
M150 | Engine fan control unit | - |
M150 | Engine fan control unit | |
N11 | Engine electric fan motor | - |
N11 | Engine electric fan motor | |
O10 | Engine fan adjustment resistor | - |
Location of components - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
Components - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
Component code | Name | Assembly reference |
B1 | Engine compartment junction unit | |
C1 | Battery earth | - |
D4 | Front/engine connection | - |
D4 | Front/engine coupling | - |
H1 | Ignition switch | |
M10 | Engine management ECU | |
M10 | Engine management control unit | - |
M10 | Engine management control unit | |
M150 | Engine fan control unit | - |
M150 | Engine fan control unit | |
N11 | Engine electric fan motor | - |
N11 | Engine electric fan motor | |
O10 | Engine fan adjustment resistor | - |
Description - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
The engine radiator and air conditioner condenser cooling system consists of one fan operated at two different speeds:the first speed is activated by the engine management control unit at a first temperature level of the engine coolant or at a certain air conditioner coolant pressure;The second speed cuts in at a higher temperature or pressure threshold.
The fan is managed by an electronic control unit which receives a PWM signal from the engine management control unit and manages the fan operation.The fan supply line is protected by a specific fuse, located in the engine compartment unit; another fuse - again in the engine compartment unit - protects the supply to the control electronics.
Functional description - ENGINE COOLING - Fiat STILO 1.9 JTD 8v da 07/02 a 06/03
Activation of the radiator fan N11 is managed directly by the electronic circuit M150 located on the actual radiator:the power supply reaches connector A from a line protected by fuse F6 of engine bay control unit B1 ;Ignition-operated power supply (15/54) reaches pin 1 of connector C from the ignition-operated line (15/54) protected by fuse F16 of engine bay control unit B1 ;the control signal (earth) - to pin 2 of connector C - comes from engine bay control unit M10 , pin 20 of connector A.
If the engine coolant temperature reaches a certain temperature stage, or the fan linear sensor K120 signals to the control unit M10 - pin 42 of connector A - that a certain pressure stage has been reached, then the control unit M10 sends a signal - from pin 14 of connector A - to pin 2 of connector C of M150 which operates the fan N11 .Linear sensor K120 receives a power supply and reference earth from the engine management control unit M10 , pins 40 and 74 of connector A.Engine compartment junction unit
B1E
B1E
B1E
B1X
B1A
B1B
B1B
B1B
B1C
B1C
B1C
B1C
B1C
B1C
B1C
B1D
B1E
B1E
B1E
Battery earth
C1A
C1A
C1A
C1A
C1A
C1A
Front/engine connection
D4
D4
D4A
D4A
D4A
D4A
D4A
D4A
D4A
D4A
D4A
D4A
D4B
D4B
D4B
D4B
D4B
D4B
D4B
D4B
D4B
D4B
Ignition switch
H1A
H1A
H1A
H1A
H1B
Engine management ECU
M10A
M10A
M10A
M10A
M10A
M10A
M10A
M10A
M10A
M10B
M10B
M10B
M10B
M10B
M10B
Engine fan control unit
M150A
M150A
M150A
M150B
M150B
M150B
M150C
M150C
M150C
M150D
ELECTRIC FRONT WINDOWS MECHANISM
N11
N11
N11
N11
Engine fan adjustment resistor
O10A
O10A
O10A
O10B
O10B
O10B