AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v fino a 03/98 – HEATED SEATS – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  fino a 03/98 – HEATED SEATS –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B1Junction unit5505A
B5MAXI FUSE box-1-
B5MAXI FUSE-1 box-
B5MAXIFUSE box-1-
B10Fuse controlled by ignition (INT/A)-
B10Key-dependent supply fuse (INT/A)-
B20Seat heating fuse-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D70Left seat connection-
D71Right seat connection-
H1Ignition switch5520A
J60Optional service relay-
J60Optional services relay-
O40Left seat heater-
O41Right seat heater-
Location of components

Components
Component codeNameAssembly reference
B1Junction unit5505A
B5MAXI FUSE box-1-
B5MAXI FUSE-1 box-
B5MAXIFUSE box-1-
B10Fuse controlled by ignition (INT/A)-
B10Key-dependent supply fuse (INT/A)-
B20Seat heating fuse-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D70Left seat connection-
D71Right seat connection-
H1Ignition switch5520A
J60Optional service relay-
J60Optional services relay-
O40Left seat heater-
O41Right seat heater-
DescriptionThe front seats may be optionally fitted with a special heatingsystem (consisting of two heater elements located in the cushionand squab): these heat the seat to ease the discomfort of enteringa cold passenger compartment in very cold weather, e.g. when thecar is left outside for long periods during winter.The heating device located on each seatconsists of two resistors operated by a switch located on the sideof the seat.Once a certain temperature is reached, theheating action is automatically cut off by a thermal contact insidethe device. An LED indicates when the heater is on.The seat heating circuit is protected bya special fuse and is controlled by a relay which supplies otherservices controlled by the ignition. both are located on the righthand side under the facia.The seat heating operates only whe the keyis turned to MAR.
Functional description The optional services relay J60 controls the heating circuitfor the seats as well as the electric rear windows and sun roof: See E3060 SUN ROOF , See E3051 ELECTRIC REAR WINDOWS .

Junction unit



B1A



B1A



B1B



B1B



B1B



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1E



B1E



B1E



B1F



B1F



B1G



B1G



B1G



B1G



B1H



B1H



B1I



B1I



B1I



B1I



B1I



B1I



B1I



B1J



B1J



B1J



B1J



B1J



multi-function components



5505A10


769

5505A16


769

5505A18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238830-7040G24switch for facia compartmentlight - r+r3238829-7040G20facia compartment light bulb holder - r+r3238795-7040A31flap assembly - r r1. Undo the bolts.2. Move the integrated service control unit slightly.3. Disconnect the electrical connections (3a, 3b, 3c).2018617

5505A30


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Remove components obstractingaccess to earth carrier node.1. Unscrew screw.2. Disjoin earth carrier node.2018618

5505A38



MAXI FUSE box-1



B5A



B5B



B5B



B5B



B5B



Fuse controlled by ignition (INT/A)



B10



Seat heating fuse



B20



B20



Supplementary fuse box



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98B



B98B



B98B



B98B



B98B



B98C



B98C



B98C



Maxifuse box on battery



B99A



B99A



B99A



B99A



B99B



B99B



B99B



B99B



B99B



B99B



B99C



B99C



B99C



B99C



B99C



B99C



B99C



B99C



B99D



B99D



B99D



B99D



B99D



B99D



B99D



battery and leads



5530B10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the car on a ramp.Undo the bolt securing the bracket on thebattery mount.Release the battery from the anchoragebracket complete with strap and remove.

5530B14


769768768

5530B18


Follow these precautions.769On batteries with an opticam hydrometer,electrolyte level and battery charge status can be monitored qualitativelyby examining the indicator colour:a light, bright colour indicates low electrolytelevel: top up with distilled water;a dark colour without a green area in thecentre indicates that the electrolyte level is correct but chargeis low: recharge the battery;a dark colour with a green area in themiddle indicates that both electrolyte level and charge status arecorrect: no action is necessary. For more details 3238420See subassembly5530 CURRENT GENERATOR . 768Proceed as follows.Check the battery voltage without loadusing the test device recommended by the Service outlets (e.g. 'MICRO360').Depending on the voltage values measured,which define the state of charge of the battery, proceed as follows: If the voltage without load is less than12.10 V, replace the battery ( 32384295530B10battery - r+r ). If the voltage without load is over 12.10V but less than 12.50 V, recharge the battery ( 32384305530B14battery - recharge ). If the voltage without load is over 12.50V, the battery is efficient.If necessary, top up the electrolyte asfollows.Carefully remove the cap strip.Top up with distilled and deionized water,taking care not to allow electrolyte to splash out.768

5530B22


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the car on the liftingbridge.1. Open engine compartment cap and disconnect battery negative terminal.2. Disconnect mass terminal on side member.3. Lift the car and disconnect mass terminal on gearbox.4. Lower the car again and remove battery earth lead.2018767

5030B26



5030B40


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.1. Open the protective cover2. Loosen the nut and disconnect the ABS supply lead3. Loosen the nut and disconnect the starter motor supply lead4. Undo the clip and undo the box retaining bolts.5. Loosen the battery positive terminal nut.2018769

5530B52


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238429-5530B10battery - r+rRelease the air duct hose from the mountingbracket on the drip tray. Remove the relay shield.1. Release the relays from the battery drip tray and remove them.2. Undo the nut fixing the air filter mounting bracket to the batterydrip tray.3. Undo the two fixing nuts (3a) and move the connections/electricalwiring mounting bracket (3b) aside.4. Release the accelerator cable from the fastening on the bracket.2018771

Passenger side dashboard earth



C20A



C20A



C20B



C20B



C20B



C20B



Rear right earth



C31



C31



C31



C31



C31



C31



C31



Left seat connection



D70A



D70B



D70C



D70



D70



D70



D70



Right seat connection



D71A



D71B



D71



D71



Ignition switch



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1B



H1B



H1B



H1B



H1B



H1B



ignition switch



5520A12


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238121-4110A11steering wheel - r+rfor replacement or check for versions with air bag3238793-7040A26steering column trim - r+r3238476-5550A12complete stalk unit - r+r for versions with air bag1. Disconnect electric connection from ignition switch.2. Unscrew screws (2a) and remove starter switch (2b). 2018661

5520A14


769

5520A16


769

5520A18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Unloose fixing screws and removesteering column guide.1. Detach down-lead cable.2018668

Optional service relay



J60



J60



J60



J60



J60



Left seat heater



O40