Workshop Manuals Factory service & repair Fiat
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
Fiat 500 Factory Service Manual (2007-2024)16 · Electrical equipment
16 · Electrical

Bonnet wiring - r.r.

Make
Fiat
Model
500 Factory Service Manual
Year
2007–2024
Section
Instrument/gauge electrical circuits › Bonnet wiring - r.r.
Electrical equipmentBonnet wiring - r.r.

BONNET WIRING - R.R.

Operation 5505C26 · VEHICLE COMPARTMENT WIRING

1.2 8v, 1.3 Multijet, 1.4 16v

Removing

See the Wiring Diagrams section for accurate identification of the electrical connections.

- Position the vehicle on a lift.

Before working on the air bag system, it is essential to perform the following preliminary operations.

(1) put the ignition key in the STOP position and extract it;

(2) disconnect the battery terminals and insulate;

(3) wait for at least 10 minutes before continuing.

FOLLOW ALL THE RECOMMENDED SAFETY INSTRUCTIONS

Op. 5580C AIR BAG SYSTEM

Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE

- Have a suitable container ready for collecting the coolant.

Op. 0010T20 ENGINE COOLANT - CHANGE

Op. 1048A23 COLD AIR INTAKE FOR AIR FILTER - R.R

Op. 1048A10 AIR FILTER ASSEMBLY - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

Op. 5530B10 BATTERY - R+R

Op. 5530B52 BATTERY SUPPORT/DRIP TRAY - R.R

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

Op. 1048B44 RIGID AIR SUPPLY PIPE BETWEEN HEAT EXCHANGER AND INTAKE MANIFOLD - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

Op. 5010A12 HEATER WATER SUPPLY PIPE - R.R.

Op. 5050B34 WINDSCREEN WIPER ARM/S COMPLETE WITH BLADE - R+R

Op. 7210E22 R.R. WINDSCREEN BASE TRIM

Op. 5050B42 WINDSCREEN WIPER MOTOR - R+R

Op. 4450B12 FRONT WHEELS (TWO) - R+R

Op. 4410D22 BRACKET FIXING FRONT SUSPENSION CROSSMEMBER TO BODYSHELL (ONE), LEFT OR RIGHT - R.R.

Op. 7055B66 ENGINE COMPARTMENT DUST COVER IN RIGHT FRONT WHEEL ARCH - R.R.

Op. 7210E10 R.R. FRONT BUMPER

- Remove both front pillar trims

Op. 7040H30 FRONT PILLAR TRIM (ONE), LEFT OR RIGHT - R.R.

- Remove both the sun blinds.

Op. 7065C34 SUN BLIND (ONE), LEFT OR RIGHT - R.R.

Op. 7040E10 FRONT COURTESY LIGHT - R+R

- Remove both upper elements of the centre pillar covers.

Op. 7040H38 CENTRE PILLAR UPPER ELEMENT (ONE), LEFT OR RIGHT - R.R

Op. 7040H10 ROOF PANEL LINING - R.R.

- If the vehicle is provided with a knee protection Air Bag

Op. 5580C23 DRIVER'S KNEE BAG - R.R.

Op. 7040A30

Op. 7040A26 STEERING COLUMN TRIM - R+R

Op. 5580E08 AERIAL FOR ELECTRONIC KEY (CODE) - R.R

Op. 5580C18 AIR BAG MODULE - R+R

Op. 4110A10 STEERING WHEEL - R+R FOR REPLACEMENT OR CHECKS

Op. 5550A10 STALK UNIT ASSEMBLY - R+R

Op. 7040A23 INSTRUMENT PANEL FRAME IN DASHBOARD - R.R

Op. 5560B10 CONTROL PANEL - R+R

Op. 2125C24 GEAR LEVER KNOB - R + R

Op. 2125C02 GEAR CONTROL LEVER OUTER BOOT - R.R.

Op. 7040A28 TRIM ON GEARBOX CONTROL PANEL - R.R.

- Remove both centre console side trims:

Op. 7040A65 CONSOLE SIDE CLOSING (ONE) - R.R.

- Remove both electric window switches:

Op. 7005M10 ELECTRIC WINDOW CONTROL SWITCH (ONE) FOR ONE FRONT DOOR - R.R.

Op. 7040A56 SWITCH UNIT IN DASHBOARD - R.R.

Op. 7040A41 SPEAKER GRILLE (ONE) LH OR RH ON INSTRUMENT FACIA - R R

Op. 7040A49 CONNECTOR HOLDER TRIM FOR EOBD - R.R.

Op. 7040A44 LEFT DASHBOARD SIDE TRIM - R.R.

Op. 5570T80 CAR RADIO EQUIPMENT - R+R

Op. 5010C30 CENTRAL AIR VENT IN DASHBOARD - R.R.

Op. 5010C12 WINDSCREEN DEMISTER DIFFUSER - R+R

- Remove both diffusers:

Op. 5010C26 FRONT SIDE PANEL AIR DIFFUSER, L.H. OR R.H. - R R

- Remove both side doors.

Op. 7210E36 R.R. FRONT SIDE DOOR

Op. 7040A10 DASHBOARD TRIM - R+R

- Remove both front pillar trims:

Op. 7040H30 FRONT PILLAR TRIM (ONE), LEFT OR RIGHT - R.R.

Op. 4110D20 STEERING ELECTRICAL CONTROL DEVICE - R R

Op. 5010C55 RIGHT LOWER AIR DIFFUSER - R+R

Op. 7210A74 R R FACIA SUPPORT BEAM

1. Disconnect the electrical connection for the engine cooling fan adjustment heating coil.

DescriptionConnector
1ENGINE FAN ADJUSTMENT HEATING COIL - 1See O010 ENGINE FAN ADJUSTMENT RESISTANCE - 1
BONNET WIRING - R.R.

1. Disconnect the electrical connection for the engine cooling fan.

DescriptionConnector
1ENGINE FAN MOTORSee N011 FAN MOTOR
BONNET WIRING - R.R.

1. Disconnect the electrical connection for the horn.

DescriptionConnector
1SINGLE-TONE HORNSee P005 SINGLE-TONE HORN
BONNET WIRING - R.R.

1. Disconnect the electrical connection for the windscreen washer pump.

DescriptionConnector
1WINDSCREEN/REARSCREEN ELECTRIC WASHER PUMP MOTORSee N022 WINDSCREEN WASHER/ REAR WINDOW WASHER PUMP MOTOR

2. Disconnect the electrical connection for the linear pressure switch.

DescriptionConnector
2LINEAR SENSOR FOR FANSSee K120 LINEAR SENSOR FOR FANS
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

1. Disconnect the electrical connections for the heater plugs control unit.

DescriptionConnector
1GLOW PLUG PREHEATING CONTROL UNITSee M015 PLUG PREHEATING CONTROL UNIT
BONNET WIRING - R.R.

1. Disconnect the electrical connections for pressure sensors (1a) and temperature (1b) for the particulate filter

DescriptionConnector
1aDIFFERENTIAL PRESSURE SENSOR FAPSee K187 FAP DIFFERENTIAL PRESSURE SENSOR
DescriptionConnector
1bDOWNSTREAM PARTICLE FILTER (DPF) TEMPERATURE SENSORSee K190 DOWNSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

1. - Disconnect the electrical connection for the front crash sensor.

DescriptionConnector
1AIR BAG FRONT SENSORSee K039 FRONT AIR BAG SENSOR
BONNET WIRING - R.R.

1. Disconnect the electrical connections for brake liquid level sensor (1a) and ABS control unit (1b).

DescriptionConnector
1aBRAKE FLUID LEVEL SENSOR (SWITCH)See K025 BRAKE FLUID LEVEL SENSOR (SWITCH)
DescriptionConnector
1bBRAKING SYTEM CONTROL UNITSee M051 Braking system control unit
BONNET WIRING - R.R.

1. Disconnect the electrical connection for the reversing switch.

DescriptionConnector
1REVERSING LIGHTS SWITCHSee I020 REVERSING LIGHTS SWITCH
BONNET WIRING - R.R.

- Operate both wheel rpm sensors:

1. Disconnect the electrical connection for the front wheel rpm sensors.

DescriptionConnector
1LEFT FRONT WHEEL SENSOR FOR ABSSee K070 LEFT FRONT WHEEL SENSOR FOR ABS
DescriptionConnector
1RIGHT FRONT WHEEL SENSOR FOR ABSSee K071 RIGHT FRONT WHEEL SENSOR FOR ABS
BONNET WIRING - R.R.

1. Disconnect the electrical connection for the brake pad wear sensor.

DescriptionConnector
1LEFT BRAKE PAD WEAR SENSOR (SWITCH)See K020 LEFT BRAKE PAD WEAR SENSOR (SWITCH)
BONNET WIRING - R.R.

- Work on both sides of the vehicle:

1. Disconnect the electrical connections for the door wiring.

DescriptionConnector
1LEFT FRONT DOOR COUPLINGSee D030 DRIVER'S FRONT DOOR COUPLING
DescriptionConnector
1RIGHT FRONT DOOR COUPLINGSee D031 PASSENGER FRONT DOOR COUPLING

2. Disconnect the rear couplings to the dashboard crossmember wiring.

DescriptionConnector
2FRONT/DASHBOARD COUPLINGSee D001 FRONT/DASHBOARD COUPLING
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR PETROL VERSIONS

1. Disconnect the electrical connection for the coupling to the engine wiring.

DescriptionConnector
1FRONT/ENGINE COUPLINGSee D004 FRONT/ENGINE COUPLING
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

1. Disconnect the electrical connection for the coupling to the engine wiring.

DescriptionConnector
1FRONT/ENGINE COUPLINGSee D004 FRONT/ENGINE COUPLING
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

1. Undo nuts (1a) and remove bulkhead coupling protection (1b).

BONNET WIRING - R.R.

1. Disconnect the electrical connections for brake pedal switches (1a), clutch (1b) and accelerator potentiometer (1c).

DescriptionConnector
1aBRAKE PEDAL SWITCHSee I030 BRAKE PEDAL SWITCH
DescriptionConnector
1bCLUTCH PEDAL SWITCHSee I031 CLUTCH PEDAL SWITCH
DescriptionConnector
1cACCELERATOR PEDAL POTENTIOMETERSee K055 ACCELERATOR PEDAL POTENTIOMETER

- Undo the earth spots arranged on the wiring and disengage the wiring from retainers.

2. Disconnect the electrical connection for the passenger compartment wiring coupling.

DescriptionConnector
2FRONT/REAR COUPLINGSee D006 FRONT/REAR COUPLING

3. Disengage bulkhead hole seal between the engine compartment and passenger compartment, then remove the engine compartment wiring.

BONNET WIRING - R.R.

Refitting

- Check that the engine compartment wiring is not damaged and that the individual conductors are correctly fastened to the connections.

- If necessary, carry out continuity tests.

- Place the engine compartment wiring in position, inserting it via the opening on the engine compartment side.

- Fit the bulkhead coupling in place and attach the retainers.

1. Connect the electrical connections for brake pedal switches (1a), clutch (1b) and accelerator potentiometer (1c).

DescriptionConnector
1aBRAKE PEDAL SWITCHSee I030 BRAKE PEDAL SWITCH
DescriptionConnector
1bCLUTCH PEDAL SWITCHSee I031 CLUTCH PEDAL SWITCH
DescriptionConnector
1cACCELERATOR PEDAL POTENTIOMETERSee K055 ACCELERATOR PEDAL POTENTIOMETER

2. Connect the electrical connection for the coupling to the passenger compartment wiring.

DescriptionConnector
2FRONT/REAR COUPLINGSee D006 FRONT/REAR COUPLING
BONNET WIRING - R.R.

1. Position bulkhead coupling protection (1a) and tighten nuts (1b)

BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR PETROL VERSIONS

1. Connect the electrical connection for the coupling to the engine wiring.

DescriptionConnector
1FRONT/ENGINE COUPLINGSee D004 FRONT/ENGINE COUPLING
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

1. Connect the electrical connection for the coupling to the engine wiring.

DescriptionConnector
1FRONT/ENGINE COUPLINGSee D004 FRONT/ENGINE COUPLING
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

- Work on both sides of the vehicle:

1. Connect the electrical connections for the door wiring.

DescriptionConnector
1LEFT FRONT DOOR COUPLINGSee D030 DRIVER'S FRONT DOOR COUPLING
DescriptionConnector
1RIGHT FRONT DOOR COUPLINGSee D031 PASSENGER FRONT DOOR COUPLING

2. Connect the rear couplings to the dashboard crossmember wiring.

DescriptionConnector
2FRONT/DASHBOARD COUPLINGSee D001 FRONT/DASHBOARD COUPLING
BONNET WIRING - R.R.

1. Connect the electrical connection for the brake pad wear sensor.

DescriptionConnector
1LEFT BRAKE PAD WEAR SENSOR (SWITCH)See K020 LEFT BRAKE PAD WEAR SENSOR (SWITCH)
BONNET WIRING - R.R.

- Operate both wheel rpm sensor connections:

1. Connect the electrical connection for the front wheel rpm sensor.

DescriptionConnector
1LEFT FRONT WHEEL SENSOR FOR ABSSee K070 LEFT FRONT WHEEL SENSOR FOR ABS
DescriptionConnector
1RIGHT FRONT WHEEL SENSOR FOR ABSSee K071 RIGHT FRONT WHEEL SENSOR FOR ABS
BONNET WIRING - R.R.

1. Connect the electrical connection for the reversing switch.

DescriptionConnector
1REVERSING LIGHTS SWITCHSee I020 REVERSING LIGHTS SWITCH
BONNET WIRING - R.R.

1. Connect the electrical connections for brake liquid level sensor (1a) and ABS control unit (1b).

DescriptionConnector
1aBRAKE FLUID LEVEL SENSOR (SWITCH)See K025 BRAKE FLUID LEVEL SENSOR (SWITCH)
DescriptionConnector
1bBRAKING SYSTEM CONTROL UNITSee M051 Braking system control unit
BONNET WIRING - R.R.

1. Connect the electrical connection for the front crash sensor.

DescriptionConnector
1AIR BAG FRONT SENSORSee K039 FRONT AIR BAG SENSOR
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

1. Connect the electrical connections for pressure sensor (1a) and temperature sensor (1b) for the particulate filter

DescriptionConnector
1aDIFFERENTIAL PRESSURE SENSOR FAPSee K187 FAP DIFFERENTIAL PRESSURE SENSOR
DescriptionConnector
1bDOWNSTREAM PARTICLE FILTER (DPF) TEMPERATURE SENSORSee K190 DOWNSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
BONNET WIRING - R.R.

1. Connect the electrical connections for the heater plugs control unit.

DescriptionConnector
1GLOW PLUG PREHEATING CONTROL UNITSee M015 PLUG PREHEATING CONTROL UNIT
BONNET WIRING - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

1. Connect the electrical connection for the windscreen washer pump.

DescriptionConnector
1WINDSCREEN/REARSCREEN ELECTRIC WASHER PUMP MOTORSee N022 WINDSCREEN WASHER/ REAR WINDOW WASHER PUMP MOTOR

2. Connect the electrical connection for the linear pressure switch.

DescriptionConnector
2LINEAR SENSOR FOR FANSSee K120 LINEAR SENSOR FOR FANS
BONNET WIRING - R.R.

1. Connect the electrical connection for the horn.

DescriptionConnector
1SINGLE-TONE HORNSee P005 SINGLE-TONE HORN
BONNET WIRING - R.R.

1. Connect the electrical connection for the engine cooling fan.

DescriptionConnector
1ENGINE FAN MOTORSee N011 FAN MOTOR
BONNET WIRING - R.R.

1. Connect the electrical connection to the engine cooling fan adjustment rheostat.

DescriptionConnector
1ENGINE FAN ADJUSTMENT HEATING COIL - 1See O010 ENGINE FAN ADJUSTMENT RESISTANCE - 1
BONNET WIRING - R.R.

- Secure the engine compartment wiring with the retaining clips on the passenger compartment bulkhead and tighten the bands.

Op. 7210A74 R R FACIA SUPPORT BEAM

Op. 5010C55 RIGHT LOWER AIR DIFFUSER - R+R

Op. 4110D20 STEERING ELECTRICAL CONTROL DEVICE - R R

- Fit both front pillar trims:

Op. 7040H30 FRONT PILLAR TRIM (ONE), LEFT OR RIGHT - R.R.

Op. 7040A10 DASHBOARD TRIM - R+R

- Fit both side doors.

Op. 7210E36 R.R. FRONT SIDE DOOR

- Fit both diffusers:

Op. 5010C26 FRONT SIDE PANEL AIR DIFFUSER, L.H. OR R.H. - R R

Op. 5010C12 WINDSCREEN DEMISTER DIFFUSER - R+R

Op. 5010C30 CENTRAL AIR VENT IN DASHBOARD - R.R.

Op. 5570T80 CAR RADIO EQUIPMENT - R+R

Op. 7040A44 LEFT DASHBOARD SIDE TRIM - R.R.

Op. 7040A49 CONNECTOR HOLDER TRIM FOR EOBD - R.R.

Op. 7040A41 SPEAKER GRILLE (ONE) LH OR RH ON INSTRUMENT FACIA - R R

Op. 7040A56 SWITCH UNIT IN DASHBOARD - R.R.

- Fit both electric window switches:

Op. 7005M10 ELECTRIC WINDOW CONTROL SWITCH (ONE) FOR ONE FRONT DOOR - R.R.

- Fit both centre console side trims:

Op. 7040A65 CONSOLE SIDE CLOSING (ONE) - R.R.

Op. 7040A28 TRIM ON GEARBOX CONTROL PANEL - R.R.

Op. 2125C02 GEAR CONTROL LEVER OUTER BOOT - R.R.

Op. 2125C24 GEAR LEVER KNOB - R + R

Op. 5560B10 CONTROL PANEL - R+R

Op. 7040A23 INSTRUMENT PANEL FRAME IN DASHBOARD - R.R

Op. 5550A10 STALK UNIT ASSEMBLY - R+R

Op. 4110A10 STEERING WHEEL - R+R FOR REPLACEMENT OR CHECKS

Op. 5580C18 AIR BAG MODULE - R+R

Op. 5580E08 AERIAL FOR ELECTRONIC KEY (CODE) - R.R

Op. 7040A26 STEERING COLUMN TRIM - R+R

Op. 7040A30

- If the vehicle is provided with a knee protection Air Bag

Op. 5580C23 DRIVER'S KNEE BAG - R.R.

Op. 7040H10 ROOF PANEL LINING - R.R.

- Fit both upper elements of the centre pillar covers.

Op. 7040H38 CENTRE PILLAR UPPER ELEMENT (ONE), LEFT OR RIGHT - R.R

Op. 7040E10 FRONT COURTESY LIGHT - R+R

- Fit both the sun blinds

Op. 7065C34 SUN BLIND (ONE), LEFT OR RIGHT - R.R.

- Fit both front pillar trims.

Op. 7040H30 FRONT PILLAR TRIM (ONE), LEFT OR RIGHT - R.R.

Op. 7210E10 R.R. FRONT BUMPER

Op. 7055B66 ENGINE COMPARTMENT DUST COVER IN RIGHT FRONT WHEEL ARCH - R.R.

Op. 4410D22 BRACKET FIXING FRONT SUSPENSION CROSSMEMBER TO BODYSHELL (ONE), LEFT OR RIGHT - R.R.

Op. 4450B12 FRONT WHEELS (TWO) - R+R

Op. 5050B42 WINDSCREEN WIPER MOTOR - R+R

Op. 7210E22 R.R. WINDSCREEN BASE TRIM

Op. 5050B34 WINDSCREEN WIPER ARM/S COMPLETE WITH BLADE - R+R

Op. 5010A12 HEATER WATER SUPPLY PIPE - R.R.

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

Op. 1048B44 RIGID AIR SUPPLY PIPE BETWEEN HEAT EXCHANGER AND INTAKE MANIFOLD - R.R.

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

Op. 5530B52 BATTERY SUPPORT/DRIP TRAY - R.R

Op. 5530B10 BATTERY - R+R

- THE FOLLOWING OPERATIONS ARE SPECIFICALLY FOR 1.3 Multijet VERSIONS

Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE

- THE FOLLOWING OPERATIONS ARE VALID FOR ALL VERSIONS.

Op. 1048A10 AIR FILTER ASSEMBLY - R.R.

Op. 1048A23 COLD AIR INTAKE FOR AIR FILTER - R.R

Op. 0010T20 ENGINE COOLANT - CHANGE

Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE

- Connect the battery terminals.

DescriptionConnector
BATTERYSee A001 BATTERY

- Remove the vehicle from the lift-

Parts & tools for this job For 2007 Fiat 500

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