AUTOMOTIVE ELECTRICIANS

Alfa Romeo 159 1.9 JTD 16V Fino a 12/05 — HEATED SEATS — — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION


WIRING DIAGRAM - HEATED SEATS - Alfa Romeo 159 1.9 JTD 16V Fino a 12/05





COMPONENTS - HEATED SEATS - Alfa Romeo 159 1.9 JTD 16V Fino a 12/05



Component codeDescriptionReference to the operation
B002 JUNCTION UNIT UNDER DASHBOARD
B045LUGGAGE COMPARTMENT JUNCTION UNIT (CVB)
B099MAXIFUSE BOX ON BATTERY
C015DASHBOARD EARTH, DRIVER'S SIDE-
C030 LEFT REAR EARTH -
D020 DASHBOARD/REAR COUPLING -
D070DRIVER'S SEAT COUPLING-
7045A10 FRONT SEAT (ONE), LEFT OR RIGHT - R.R. -
D071PASSENGER SEAT COUPLING-
7045A10 FRONT SEAT (ONE), LEFT OR RIGHT - R.R. -
I065DRIVER'S SEAT HEATING SWITCH
M089STEERING LOCK CONTROL UNIT (NBS)-
5580E17STEERING LOCK - R.R -
VedereM110CENTRALINA RISCALDATORE SEDILE ANTERIORE PASSEGGEROVedereO040RISCALDATORE SEDILE SINSITRO-
VedereM170CENTRALINA RISCALDATORE SEDILE ANTERIORE LATO GUIDAVedereO041RISCALDATORE SEDILE LATO PASSEGGERO-

COMPONENT LOCATION - HEATED SEATS - Alfa Romeo 159 1.9 JTD 16V Fino a 12/05





Component codeDescriptionReference to the operation
B002 JUNCTION UNIT UNDER DASHBOARD
B045LUGGAGE COMPARTMENT JUNCTION UNIT (CVB)
B099MAXIFUSE BOX ON BATTERY
C015DASHBOARD EARTH, DRIVER'S SIDE-
C030 LEFT REAR EARTH -
D020 DASHBOARD/REAR COUPLING -
D070DRIVER'S SEAT COUPLING-
7045A10 FRONT SEAT (ONE), LEFT OR RIGHT - R.R. -
D071PASSENGER SEAT COUPLING-
7045A10 FRONT SEAT (ONE), LEFT OR RIGHT - R.R. -
I065DRIVER'S SEAT HEATING SWITCH
M089STEERING LOCK CONTROL UNIT (NBS)-
5580E17STEERING LOCK - R.R -
VedereM110CENTRALINA RISCALDATORE SEDILE ANTERIORE PASSEGGEROVedereO040RISCALDATORE SEDILE SINSITRO-
VedereM170CENTRALINA RISCALDATORE SEDILE ANTERIORE LATO GUIDAVedereO041RISCALDATORE SEDILE LATO PASSEGGERO-

DESCRIPTION - HEATED SEATS - Alfa Romeo 159 1.9 JTD 16V Fino a 12/05


The front seats are available, on request, with a special heating system (comprising two heating elements located in the cushion and the backrest): this allows the seat to be heated to overcome the discomfort of cold passenger compartments in very harsh climates, e.g. when the car is left in the open for long periods in winter.The heating device located in each seat consists of two resistors activated by a controls located on the outside of each seat: there is a ring nut through which the function is switched on/off and the heating is adjusted to 3 different settings (0 = seat heating switched off).Once a certain temperature has been reached the heating stops automatically thanks to a thermal contact inside the actual device.A special LED in the actual switches indicates that the resistances are switched on.The seat heating can only be activated with the ignition on (INT/A).The seat heating circuit is controlled by a special relay and protected by two specific fuses located in the fuse box in the boot.

FUNCTIONAL DESCRIPTION - HEATED SEATS - Alfa Romeo 159 1.9 JTD 16V Fino a 12/05


The seat heating power supply arrives via the relay T21 located in the fuse box in the boot B45; this is energized by the ignition-controlled line (INT/A) which arrives directly from the steering lock node M89; fuses F57 and F67, located in B45, protect the supply circuit for the two seats: the power supply for the two heaters O40 and O41 takes place via the control units M170 and M110 which receive commands from the switches I65 and I66.The switches are lit up with the ignition on (INT) by the line for fuse F49 of the junction unit under the dashboard B2.

JUNCTION UNIT UNDER DASHBOARD



B002A



B002A



B002A



B002A



B002A



B002A



B002A



B002B



B002C



B002D



B002D



B002D



B002D



B002D



B002D



B002G



B002H



B002H



LUGGAGE COMPARTMENT JUNCTION UNIT (CVB)



B045A



B045A



B045B



MAXIFUSE BOX ON BATTERY



B099A



B099A



B099B



B099C



B099E



B099F



DASHBOARD EARTH, DRIVER'S SIDE



C015



C015



C015



LEFT REAR EARTH



C030



C030



DASHBOARD/REAR COUPLING



D020A



D020A



D020A



D020A



D020A



D020B



D020B



D020B



D020B



D020B



DRIVER'S SEAT COUPLING



D070A



D070A



D070B



D070B



PASSENGER SEAT COUPLING



D071A



D071A



D071B



D071B



DRIVER'S SEAT HEATING SWITCH



I065



STEERING LOCK CONTROL UNIT (NBS)



M089



M089


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