Workshop Manuals Factory service & repair Fiat
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Fiat 500 Factory Service Manual (2007-2024)08 · Engine
08 · Engine

System cable loom - r.r.

Make
Fiat
Model
500 Factory Service Manual
Year
2007–2024
Section
Petrol injection system › System cable loom - r.r.
EngineSystem cable loom - r.r.

SYSTEM CABLE LOOM - R.R.

Operation 1056B90 · MULTI-POINT INJECTION SYSTEM (MPI)

1.2 8v

Removing

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

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

Op. 5530B10 BATTERY - R+R

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

1. Connect the electrical connection for the injection control unit.

DescriptionConnector
1Injection control unitSee M010 ENGINE MANAGEMENT ECU
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the pre-converter Lambda sensor.

DescriptionConnector
1Pre-converter Lambda sensorSee K015 LAMBDA SENSOR ON PRE-CATALYZER

2. Undo retaining bolt (2a) for earth lead on engine (2b).

SYSTEM CABLE LOOM - R.R.

1. Disconnect electrical connection (1a) for converter lambda sensor (1b) and free the wiring looms from retaining clip (1c).

DescriptionConnector
1aConverter lambda sensorSee K017 LAMBDA SENSOR ON CATALYZER
SYSTEM CABLE LOOM - R.R.

1. Disconnect front/engine electrical coupling (1a) and free wiring loom (1b) from the retaining clip.

DescriptionConnector
1aFront/engine couplingSee D004 FRONT/ENGINE COUPLING
SYSTEM CABLE LOOM - R.R.

1. Disconnect the injector electrical coupling, freeing the wiring loom from the retaining clip

DescriptionConnector
1Injector couplingSee D081 INJECTOR JUNCTION

2. Disconnect the ignition coil electrical connection.

DescriptionConnector
2Ignition coilSee A030 IGNITION COIL

3. Undo the retaining bolt for the injection control unit wiring loom mount.

SYSTEM CABLE LOOM - R.R.

1. Disconnect the spark plug electrical connections, coil/ignition coil side.

2. Disconnect the electrical connection for the variable valve timing electromagnet

DescriptionConnector
2Variable valve timing electromagnetSee K098 PHASE TRANSFORMER SOLENOID
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the aspirated air temperature/pressure sensor.

DescriptionConnector
1Air pressure - temperature sensorSee K044 AIR TEMPERATURE/PRESSURE SENSOR
SYSTEM CABLE LOOM - R.R.

1. Undo retaining bolt (1a) and disconnect earth lead on compressor (1b).

DescriptionConnector
1bEarth on compressorSee C039 COMPRESSOR EARTH
SYSTEM CABLE LOOM - R.R.

1. Disconnect electrical connection (1a) for throttle body actuator and free wiring loom from retaining clips (1b).

DescriptionConnector
1aThrottle body actuatorSee N075 BUILT-IN THROTTLE BODY ACTUATOR
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for timing sensor (1a) and for engine coolant temperature sensor/transmitter (1b).

DescriptionConnector
1aTiming sensorSee K047 TIMING SENSOR
DescriptionConnector
1bEngine coolant temperature sensor/sender unitSee K036 ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the fuel vapour recovery enablement solenoid.

DescriptionConnector
1Fuel vapour recovery solenoid valveSee L010 FUEL VAPOUR RECOVERY SOLENOID VALVE
SYSTEM CABLE LOOM - R.R.

- Loosen the fastenings on the timing belt upper cover and release the wiring loom of the rpm sensor and the engine oil pressure switch.

- Position the vehicle on a lift.

1. Disconnect the electrical connection for engine rpm sensor (1a) and for insufficient engine oil pressure sensor/switch (1b).

DescriptionConnector
1aEngine rpm sensorSee K046 RPM SENSOR
DescriptionConnector
1bInsufficient engine oil pressure sensor/switchSee K030 ENGINE OIL PRESSURE SENSOR (SWITCH)
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the knock sensor.

DescriptionConnector
1Knock sensorSee K050 DETONATION SENSOR

The knock sensor is located on the rear of the engine under the intake manifold.

SYSTEM CABLE LOOM - R.R.

1. Undo retaining nut (1a) and diconnect starter motor electrical leads (1b).

DescriptionConnector
1bStarter motorSee A020 STARTER MOTOR

2. Undo retaining bolt (2a) and disconnect engine earth lead (2b).

DescriptionConnector
2bEarth on engineSee C040 ENGINE EARTH
SYSTEM CABLE LOOM - R.R.

1. Undo nut (1a) and disconnect electrical cable (1b) from the alternator.

DescriptionConnector
1bAlternatorSee A010 ALTERNATOR
SYSTEM CABLE LOOM - R.R.

- Remove the wiring loom assembly.

Refitting

- Check the condition of the electrical wiring.

- If required, test the continuity of individual connectors.

1. Connect alternator electrical cable (1a) and tighten nut (1b) to the recommended torque.

DescriptionConnector
1aAlternatorSee A010 ALTERNATOR
ComponentFasteningdiaValue (daNm)Validity
B+ recharging lead (on alternator)NutM80.9all versions
SYSTEM CABLE LOOM - R.R.

1. Position the earth lead on engine (1a) and tighten bolt (1b).

DescriptionConnector
1aEarth on engineSee C040 ENGINE EARTH

2. Connect starter motor (2a) electrical cables and tighten nut (2b).

DescriptionConnector
2aStarter motorSee A020 STARTER MOTOR
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the knock sensor.

The knock sensor is located on the rear of the engine under the intake manifold.

DescriptionConnector
1Knock sensorSee K050 DETONATION SENSOR
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for engine rpm sensor (1a) and for insufficient engine oil pressure sensor/switch (1b).

DescriptionConnector
1aEngine rpm sensorSee K046 RPM SENSOR
DescriptionConnector
1bInsufficient engine oil pressure sensor/switchSee K030 ENGINE OIL PRESSURE SENSOR (SWITCH)
SYSTEM CABLE LOOM - R.R.

- Lower the vehicle.

- Restore the wiring loom of the engine rpm sensor and of the engine oil insufficient pressure switch/sensor and tighten the fastenings of the timing belt upper cover.

1. Connect the electrical connection of the fuel vapour recovery enablement solenoid valve.

DescriptionConnector
1Fuel vapour recovery solenoid valveSee L010 FUEL VAPOUR RECOVERY SOLENOID VALVE
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for timing sensor (1a) and for engine coolant temperature sensor/transmitter (1b).

DescriptionConnector
1aTiming sensorSee K047 TIMING SENSOR
DescriptionConnector
1bEngine coolant temperature sensor/sender unitSee K036 ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
SYSTEM CABLE LOOM - R.R.

1. Connect electrical connection (1a) of throttle body actuator and attach the wiring loom to retaining clips (1b).

DescriptionConnector
1aThrottle body actuatorSee N075 BUILT-IN THROTTLE BODY ACTUATOR
SYSTEM CABLE LOOM - R.R.

1. Position the earth lead on compressor (1a) and tighten bolt (1b).

DescriptionConnector
1aEarth on compressorSee C039 COMPRESSOR EARTH
SYSTEM CABLE LOOM - R.R.

1.Connect the electrical connection for the aspirated air temperature/pressure sensor.

DescriptionConnector
1Air pressure - temperature sensorSee K044 AIR TEMPERATURE/PRESSURE SENSOR
SYSTEM CABLE LOOM - R.R.

1. Connect the spark plug electrical connections, coil/ignition coil side.

2. Connect the electrical connection for the variable valve timing solenoid.

DescriptionConnector
2Variable valve timing electromagnetSee K098 PHASE TRANSFORMER SOLENOID
SYSTEM CABLE LOOM - R.R.

1. Connect the injector electrical coupling, attaching the wiring loom to the retaining clip.

DescriptionConnector
1Injector couplingSee D081 INJECTOR JUNCTION

2. Connect the ignition coil electrical connection.

DescriptionConnector
2Ignition coilSee A030 IGNITION COIL

3. Tighten the retaining bolt for the injection control unit wiring loom mount.

SYSTEM CABLE LOOM - R.R.

1. Connect front/engine electrical coupling (1a) and attach wiring loom (1b) to the retaining clip.

DescriptionConnector
1aFront/engine couplingSee D004 FRONT/ENGINE COUPLING
SYSTEM CABLE LOOM - R.R.

1. Connect electrical connection (1a) of converter lambda sensor (1b) and attach the wiring loom to retaining clip (1c).

DescriptionConnector
1aConverter lambda sensorSee K017 LAMBDA SENSOR ON CATALYZER
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the pre-converter Lambda sensor.

DescriptionConnector
1Pre-converter Lambda sensorSee K015 LAMBDA SENSOR ON PRE-CATALYZER

2. Position the earth lead on engine (2a) and tighten bolt (2b).

SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the injection control unit

DescriptionConnector
1Injection control unitSee M010 ENGINE MANAGEMENT ECU
SYSTEM CABLE LOOM - R.R.

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

Op. 5530B10 BATTERY - R+R

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

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

1.4 16v

Removing

- Position the vehicle on a lift.

- Disconnect the negative battery terminal.

DescriptionConnector
BatterySee A001 BATTERY

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

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

Op. 1048A32 HOSE FROM AIR FILTER TO INTAKE MANIFOLD - R + R

1. Disconnect the electrical connection for the engine management control unit, releasing the cable loom from the retaining clips.

DescriptionConnector
1Engine management control unitSee M010 ENGINE MANAGEMENT ECU
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical coupling between the engine wiring and the front wiring.

DescriptionConnector
1Front/engine couplingSee D004 FRONT/ENGINE COUPLING

2. Undo the bolt (2a) securing the injector wiring duct (2b).

3. Disconnect all the electrical connections for the ignition coils.

DescriptionConnector
3Ignition coilSee A030 IGNITION COIL

4. Undo the nut and disconnect the engine earth lead.

DescriptionConnector
4Earth on engineSee C040 ENGINE EARTH

5. Detach the timing sensor electrical connection.

DescriptionConnector
5Timing sensorSee K047 TIMING SENSOR
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the engine coolant temperature sensor.

DescriptionConnector
1Engine coolant temperature sensor/sender unitSee K036 ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the upper Lambda sensor.

DescriptionConnector
1Lambda sensor on pre-catalyzerSee K015 LAMBDA SENSOR ON PRE-CATALYZER

2. Disconnect the electrical connection for the lower Lambda sensor.

DescriptionConnector
2Lambda sensor on catalytic converterSee K017 LAMBDA SENSOR ON CATALYZER
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the fuel vapour flow enablement solenoid valve.

DescriptionConnector
1Fuel vapour recovery solenoid valveSee L010 FUEL VAPOUR RECOVERY SOLENOID VALVE

2. Disconnect the electrical connection for the throttle casing actuator.

DescriptionConnector
2Integrated throttle body actuatorSee N075 BUILT-IN THROTTLE BODY ACTUATOR

3. Disconnect the injector electrical coupling.

DescriptionConnector
3Injector couplingSee D081 INJECTOR JUNCTION

4. Release the wiring from the retaining clip.

SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the intake air temperature sensor.

DescriptionConnector
1Air pressure - temperature sensorSee K044 AIR TEMPERATURE/PRESSURE SENSOR

2. Undo the fixing bolt and disconnect the earth lead on the compressor.

DescriptionConnector
2Compressor earthSee C039 COMPRESSOR EARTH

3. Disconnect the compressor engagement electromagnet electrical connection.

DescriptionConnector
3Air conditioning compressor engagement electro-magnetSee L020 AIR CONDITIONING COMPRESSOR ENGAGEMENT ELECTRO-MAGNET
SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the engine oil pressure switch.

DescriptionConnector
1Insufficient engine oil pressure sensor (switch)See K030 ENGINE OIL PRESSURE SENSOR (SWITCH)

2. Detach the rpm sensor electrical connection.

DescriptionConnector
2Rpm sensorSee K046 RPM SENSOR

- Release the electrical wiring from its seat on the timing belt protective covers.

SYSTEM CABLE LOOM - R.R.

1. Disconnect the electrical connection for the knock sensor.

DescriptionConnector
1Knock sensorSee K050 DETONATION SENSOR
SYSTEM CABLE LOOM - R.R.

- Remove the cable loom.

Refitting

- Check the condition of the electrical wiring.

- If appropriate, carry out the continuity test on the individual connectors.

1. Connect the electrical connection for the detonation sensor.

DescriptionConnector
1Knock sensorSee K050 DETONATION SENSOR
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the engine oil pressure switch.

DescriptionConnector
1Insufficient engine oil pressure sensor (switch)See K030 ENGINE OIL PRESSURE SENSOR (SWITCH)

2. Connect the electrical connection for the rpm sensor.

DescriptionConnector
2Rpm sensorSee K046 RPM SENSOR

- Restore the electrical wiring in its seat on the timing belt protective covers.

SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the intake air temperature sensor.

DescriptionConnector
1Air pressure - temperature sensorSee K044 AIR TEMPERATURE/PRESSURE SENSOR

2. Position the earth leadon the compressor and tighten the bolt.

DescriptionConnector
2Compressor earthSee C039 COMPRESSOR EARTH

3. Connect the electrical connection for the compressor engagement electromagnet.

DescriptionConnector
3Air conditioning compressor engagement electro-magnetSee L020 AIR CONDITIONING COMPRESSOR ENGAGEMENT ELECTRO-MAGNET
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the fuel vapour flow enablement solenoid valve.

DescriptionConnector
1Fuel vapour recovery solenoid valveSee L010 FUEL VAPOUR RECOVERY SOLENOID VALVE

2. Connect the electrical connection for the throttle casing actuator.

DescriptionConnector
2Integrated throttle body actuatorSee N075 BUILT-IN THROTTLE BODY ACTUATOR

3. Connect the injector electrical coupling.

DescriptionConnector
3Injector couplingSee D081 INJECTOR JUNCTION

4. Secure the wiring to the retaining clip.

SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the upper Lambda sensor.

DescriptionConnector
1Lambda sensor on pre-catalyzerSee K015 LAMBDA SENSOR ON PRE-CATALYZER

2. Connect the electrical connection for the lower Lambda sensor.

DescriptionConnector
2Lambda sensor on catalytic converterSee K017 LAMBDA SENSOR ON CATALYZER
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the engine coolant temperature sensor.

DescriptionConnector
1Engine coolant temperature sensor/sender unitSee K036 ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical coupling between the engine wiring and the front wiring.

DescriptionConnector
1Front/engine couplingSee D004 FRONT/ENGINE COUPLING

2. Disconnect all the electrical connections for the ignition coils.

DescriptionConnector
2Ignition coilSee A030 IGNITION COIL

3. Position the injector wiring duct (3a) and tighten the fixing bolt (3b).

4. Position the earth lead on the engine and tighten the bolt.

DescriptionConnector
4Earth on engineSee C040 ENGINE EARTH

5. Connect the electrical connection for the timing sensor.

DescriptionConnector
5Timing sensorSee K047 TIMING SENSOR
SYSTEM CABLE LOOM - R.R.

1. Connect the electrical connection for the engine management control unit, securing the cable loom to the retaining clips.

DescriptionConnector
1Engine management control unitSee M010 ENGINE MANAGEMENT ECU
SYSTEM CABLE LOOM - R.R.

Op. 1048A32 HOSE FROM AIR FILTER TO INTAKE MANIFOLD - R + R

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

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

- Connect the negative battery terminal.

DescriptionConnector
BatterySee A001 BATTERY

- Remove the vehicle from the lift.

Parts & tools for this job For 2007 Fiat 500

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