AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v da 04/98 a 02/99 – EARTHS – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  da 04/98 a 02/99 – EARTHS –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
C1Battery earth-
C1Battery earth5530B
C10Front left earth5505A
C11Right front earth-
C11Right front earth5505A
C12ABS front earth5505A
C15Facia earth, driver's side5505A
C16Air conditioning earth-
C20Passenger side dashboard earth5505A
C30Left rear earth5505A
C31Rear right earth5505A
C32Rearscreen earth5505A
C40Earth on engine5505A
C41Earth cable loom for additional heater-
C50Air Bag earth5505A
Location of components

Components
Component codeNameAssembly reference
C1Battery earth-
C1Battery earth5530B
C10Front left earth5505A
C11Right front earth-
C11Right front earth5505A
C12ABS front earth5505A
C15Facia earth, driver's side5505A
C16Air conditioning earth-
C20Passenger side dashboard earth5505A
C30Left rear earth5505A
C31Rear right earth5505A
C32Rearscreen earth5505A
C40Earth on engine5505A
C41Earth cable loom for additional heater-
C50Air Bag earth5505A
DescriptionThe following diagram shows the various earths on the vehicle,and the circuits connected to each are indicated.It is thus easy to identify the circuitswhich are connected to earth from the same line; this facilitatesfault finding if a problem involves more than one function: forexample, the corrosion of one earth could put different circuitsand several functions out of action at the same time.
Functional description767The car earth points are subdividedaccording to the wiring to which they are connected, as follows: battery negative wiring C1C10C crossmember wiring C11 front wiring C10 AC10 B engine wiring C40 BC40 C dashboard wiring C20 A rear wiring C20BC30C31 negative rear window wiring: C32 Air Bag wiring C50 ABS wiring C12

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

Front left earth



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10B



C10B



C10B



C10B



C10C



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



Right front earth



C11B



C11B



C11



C11



C11



C11



C11



C11



C11



C11



Air conditioning earth



C16



C16



C16



Passenger side dashboard earth



C20A



C20A



C20B



C20B



C20B



C20B



Left rear earth



C30



C30



C30



C30



Rear right earth



C31



C31



C31



C31



C31



C31



C31



Rearscreen earth



C32



Earth on engine



C40A



C40A



C40A



C40A



C40B



C40B



C40B



C40C



C40C



C40



C40



C40



C40



C40B



C40C



Earth cable loom for additional heater



C41



C41