AUTOMOTIVE ELECTRICIANS

Alfa Romeo GT 1.9 JTD 16V – HEATED SEATS – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo GT 1.9 JTD 16V   – HEATED SEATS –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V





Components - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B1JUNCTION UNIT
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C15FACIA EARTH, DRIVER''S SIDE-
C38EARTH ON TUNNEL-
D70DRIVER''S SEAT COUPLING ( REAR )-
D71RIGHT SEAT CONNECTION-
D97SHORT CIRCUITING COUPLING-
H1IGNITION SWITCH
M1BODY COMPUTER

Location of components - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V





Components - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B1JUNCTION UNIT
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C15FACIA EARTH, DRIVER''S SIDE-
C38EARTH ON TUNNEL-
D70DRIVER''S SEAT COUPLING ( REAR )-
D71RIGHT SEAT CONNECTION-
D97SHORT CIRCUITING COUPLING-
H1IGNITION SWITCH
M1BODY COMPUTER

Description - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V


The front seats may be optionally fitted with a special heating system (consisting of two heater elements located in the cushion and squab): these heat the seat to ease the discomfort of entering a cold passenger compartment in very cold weather, e.g. when the car is left outside for long periods during winter.The heating device located in each seat consists of two resistors operated by a switch located on the outside of each seat.Once a certain temperature is reached, the heating action is automatically cut off by a thermal contact inside the device.An LED located on the button itself indicates when the resistors are switched on.The circuit is controlled by the services relay and is protected by a specific fuse, both located in the unit under the dashboard.The relay is always supplied with the ignition ON even during starting.With the ignition OFF, the Body Computer keeps the relay activated for 3 minutes, but deactivates it 30 seconds after one of the two doors is opened.

Functional description - HEATED SEATS - Alfa Romeo GT 1.9 JTD 16V


The services relay T13, located in the unit under the dashboardB2, supplies, via the line protected by fuse F45, the seat heating control devices, via connectionsD70andD71.The switching on logic described above is controlled by the Body ComputerM1- pin 14 of connector F.

Engine compartment junction unit



B1A



B1A



B1A



B1B



B1B



B1B



B1C



B1C



B1C



B1D



B1E



B1E



B1X



B1X



Junction unit under dashboard



B2A



B2A



B2A



B2A



B2A



B2A



B2B



B2B



B2C



B2C



B2D



B2E



B2F



B2G



B2H



MAXI FUSE box



B5A



B5B



B5C



B5D



B5E



B5F



Maxifuse box on battery



B99A



B99A



B99B



B99D



Facia earth, driver's side



C15A



C15B



C15C



Earth on centre tunnel



C38



Driver's seat coupling



D70



Passenger seat coupling



D71



Short circuiting coupling



D97A



D97A



D97A



D97C



D97D



D97E



D97G



D97H



D97I



D97M



Ignition switch



H1A



H1A



H1B



Body computer



M1A



M1A



M1A



M1A



M1A



M1A



M1B



M1C



M1D



M1E



M1F



M1G


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