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Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO Wiring diagram - ENGINE COOLING - Fiat STILO 1.2 16v da 07/03 a 12/03
Components - ENGINE COOLING - Fiat STILO 1.2 16v da 07/03 a 12/03
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 1.2 16v da 07/03 a 12/03
Components - ENGINE COOLING - Fiat STILO 1.2 16v da 07/03 a 12/03
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 1.2 16v da 07/03 a 12/03
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 coolant temperature level or at a certain air conditioner coolant pressure;the second speed cuts in at a higher temperature or pressure threshold.
The fan is operated by two specific relays located in the engine compartment unit.The fan supply line is protected by two specific fuses, located in the engine compartment unit.The fan can only be switched on when the ignition is ON.
Functional description - ENGINE COOLING - Fiat STILO 1.2 16v da 07/03 a 12/03
The relays T6 and T7 in the engine compartment unit B1 manage the switching on of the fan N11 at two speeds: their coils are supplied by the ignition-controlled line (15/54), while the power lines are protected by the fuses F6 and F7, of the engine compartment unit B1 .Both are energized by a control signal - earth - coming from the engine control unit M10 .If the coolant reaches a higher temperature level, or the fan linear sensor K120 indicates to the control unit M10 - pin 54 of connector B - that the first pressure level has been reached, the control unit M10 sends a signal - from pin 14 of connector A - to the fan 1st speed relay T6, which sends the supply directly to the fan N11 via additional resistance O10: the fan then turns at the first speed (low).If the coolant reaches a higher temperature level, or indicates to the control unit M10 that a higher pressure has been reached, the control unit M10 sends a signal - from pin 30 of connector A - to the fan 2nd speed relay T7, which sends the supply directly to the fan N11 : the fan then turns at the maximum speed.Linear sensor K120 receives a power supply and reference earth from the engine management control unit M10 , pins 53 and 5 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