Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Special tools
Alfa Romeo 147 Factory Service Manual (2000-2004)19 · Wiring diagrams and electrical functions
19 · Electrical

HEATED SEATS - Description

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2004
Section
Electrically activated devices › HEATED SEATS - Description
Wiring diagrams and electrical functionsHEATED SEATS - Description

HEATED SEATS - Description

Description

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 heating is switched on both when the ignition is on and when the ignition is off.

With the ignition on during starting, this relay is temporarily deactivated.

With the ignition off, the Body Computer keeps the relay activated - which also supplies the door mirrors and electric windows - for 3 minutes, but deactivates it immediately when one of the two front doors is opened.

The switching on of the resistors is disabled if the battery voltage is less than 10 V.

Parts & tools for this job For 2000 Alfa Romeo 147

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