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Fiat STILO 1.9 JTD 16v Fino a 06/02 – ADDITIONAL HEATER – – Webasto – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Fiat STILO 1.9 JTD 16v  Fino a 06/02 – ADDITIONAL HEATER –  – Webasto – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION https://portal-diagnostov.com/license.html
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Wiring diagram - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02



ADDITIONAL HEATER - WIRING DIAGRAM Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Components - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02



Component codeNameAssembly reference
B1 Engine compartment junction unit
B38 Additional heater fuse-
B99 Maxifuse box on battery
I95 Additional heater safety switch-
J36 Additional heater relay-
J37 Additional heater relay - 2-
J37 Additional heater relay -2-
K79 Air temperature sensor (additional heater)(-
K79 Air temperature sensor (additional heater)()-
M70 Climate control system control unit
N85 Passenger compartment ventilation fan 5040C 3363005
O25 Additional heater resistor-

Location of components - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02



ADDITIONAL HEATER - LOCATION OF COMPONENTS Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Components - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02



Component codeNameAssembly reference
B1 Engine compartment junction unit
B38 Additional heater fuse-
B99 Maxifuse box on battery
I95 Additional heater safety switch-
J36 Additional heater relay-
J37 Additional heater relay - 2-
J37 Additional heater relay -2-
K79 Air temperature sensor (additional heater)(-
K79 Air temperature sensor (additional heater)()-
M70 Climate control system control unit
N85 Passenger compartment ventilation fan 5040C 3363005
O25 Additional heater resistor-

Description - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02


The climate control via the heater unit is insufficient when the engine is cold, especially in Diesel engines which are slow to warm up.These engines may optionally be fitted with a supplementary heater system. This remains active from the moment when the engine is turned on until a certain temperature is reached.The system consists of an additional heater, located in the heater unit: the device contains three resistances (PTC).The operation of the resistances is controlled by the climate control unit which either operates only one, two or three of them, providing gradual heating, with a maximum power of 700 W following a logic which depends on:the temperature of the engine coolant (about 60°?);the engine speed (which should be above 700 rpm).the battery voltage (which should not go below 12.2 V).For more details.The supply of one, two or three resistances is controlled by two relays located on the heater unit:1. Level: activated by the first relay;2. Level: activated by the second relay;3. Level: activated by both relays.The supply line is protected by a specific maxifuse and a bridge fuse.

Functional description - ADDITIONAL HEATER - Fiat STILO 1.9 JTD 16v Fino a 06/02


The relay J36 controls the engagement of the first additional heater coilThe relay is supplied from the line of the fuse B38 .The relay J37 controls the engagement of the other two additional heater coils. The supply for relay arrives from the line for maxifuse PTC2, located on the battery, connector B99 .the ignition (INT/A) protected by fuse F49 of the junction unit under the dashboard B2. The climate control unit M70 sends the enabling signal for engaging the first resistance O25A from pin 8 of connector B: this signal excites relay J36. The climate control unit M70 sends a signal for enabling the engagement of the two resistances O25B from pin 7 of connector B: this signal energizes the relay J36.

Engine compartment junction unit



B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1X



B1X - Engine compartment junction               unit ( BATTERY POSITIVE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1A



B1A - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1B



B1B - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1B



B1B - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1B



B1B - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( ENGINE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1C



B1C - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1D



B1D - Engine compartment junction               unit ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B1E



B1E - Engine compartment junction               unit ( CROSSMEMBER ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Additional heater fuse



B38



B38 - Additional heater fuse ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Maxifuse box on battery



B99A



B99A - Maxifuse box on battery ( BATTERY POSITIVE ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B99B



B99B - Maxifuse box on battery ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B99C



B99C - Maxifuse box on battery ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B99D



B99D - Maxifuse box on battery ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B99D



B99D - Maxifuse box on battery ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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B99E



B99E - Maxifuse box on battery ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Additional heater safety switch



I95



I95 - Additional heater safety               switch ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Additional heater relay



J36



J36 - Additional heater relay ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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J36



J36 - Additional heater relay ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Additional heater relay - 2



J37



J37 - Additional heater relay               - 2 ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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J37



J37 - Additional heater relay               - 2 ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Air temperature sensor (additional heater)(



K79



K79 - Air temperature sensor               (additional heater)( ( FRONT ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Climate control system control unit



M70A



M70B



M70C



Passenger compartment ventilation fan



N85



N85 - Passenger compartment ventilation fan ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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N85



N85 - Passenger compartment ventilation fan ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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Additional heater resistor



O25A



O25A - Additional heater resistor ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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O25A



O25A - Additional heater resistor ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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O25B



O25B - Additional heater resistor ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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O25B



O25B - Additional heater resistor ( AIR CONDITIONING ) Fiat STILO 1.9 JTD 16v  Fino a 06/02 https://portal-diagnostov.com/license.html
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