1056B90 SYSTEM CABLE BUNDLE - R + R - Alfa - 147 - eLearn

3024843 - 1056B90 system cable bundle - r + r

) Position the vehicle on the ramp.Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.

	Name	Connector
-	Battery	A1B

1. Disconnect the fuel vapour recirculation pipe from the air inake sleeve.2. Disconnect the intake hose from the throttle body integrated with D.V.L. and move to one side.

1. Disconnect the electrical connection for the air conditioning compressor electromagnet coupling.

	Name	Connector
1	Air conditioning compressor engagement electro-magnet	L20

2. Disconnect electrical connections (2a) and (2b) from the lambda probes

	Name	Connector
2a	Lambda sensor on left pre-catalyzer	K16

	Name	Connector
2b	Lambda sensor on pre-catalyzer	K15

Proceed with the removal - 1016A40 ignition coil cover on cylinder head- r+r . 1. Disconnect the electrical connections from the ignition coils.

	Name	Connector
1	Ignition coil	A30

2. Release the electrical wiring from the fastenings on the tappet cover.3. Undo the bolt (3a) and disconnect the earth lead (3b) from the ignition coils support plate.

	Name	Connector
3b	Earth on engine	C40B

1. Disconnect the electrical connections from the injectors.

	Name	Connector
1	Injector	N70

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

	Name	Connector
1	Engine temperature sender unit	K36

2. Undo nut (2a) and disconnect earth lead (2b) from the intake manifold.

	Name	Connector
2b	Earth on engine	C40A

1. Disconnect the electrical connection from the fuel injection-ignition control unit.

	Name	Connector
1	Engine management ECU	M10A

2. Undo nut (2a) and disconnect earth lead (2b) from the injection-ignition control unit mount

	Name	Connector
2b	Earth on engine	C40C

3. Disconnect the electrical connection from the throttle body integrated with D.V.L. and release the wiring from the fastening.

	Name	Connector
3	Throttle body actuator	N75

4. Disconnect the electrical connection from the fuel vapour solenoid valve.

	Name	Connector
4	Throttle body actuator	N75

1. Disconnect the engine front connection.

	Name	Connector
1	Front / engine coupling	D4

2. Disconnect the electrical connection for the rpm sensor.

	Name	Connector
2	RPM sensor	K46

3. Disconnect the electrical connection for the detonation sensor.

	Name	Connector
3	Detonation sensor - 1	K50

4. Disconnect the electrical connection for the Lambda sensor.

	Name	Connector
4	Lambda sensor downstream of post-catalyzer	K17

5. Disconnect the electrical connection for the cam angle sensor.

	Name	Connector
5	Timing sensor.	K47

6. Disconnect the oil vapour recovery pipe from the tappet cover.

1. Disconnect the electrical connection from the variable valve timing electro-magnet.

	Name	Connector
1	Timing variator actuator	N76

2. Disconnect the electrical connection from the enablement solenoid of the changeover device actuator.

	Name	Connector
2	Variable geometry control solenoid	L15

Release the system wiring harness from the fastenings on the air chamber.

Proceed with the removal - 7055B54 under-engine guard - r r . Proceed with the removal - 1072C44 exhaust manifold heat shield on bulkhead - r+r . 1. Undo the nuts securing the catalytic preconverter to the exhaust manifold.2. Unscrew the nuts securing the catalytic preconverter to the catalytic converter3. Unscrew the bolts securing the catalytic preconverter to the crankcase.4. Undo the bolt securing the catalytic converter flexible mounting to the front suspension crossmember.5. Remove the catalytic preconverter complete with Lambda sensors.Remove the gaskets.

1. Undo the nut (1a) and disconnect supply lead (1b) from the alternator.

	Name	Connector
1b	Alternator	A10A

2. Undo nut (2a) and disconnect supply lead (2b) from the starter motor.

	Name	Connector
2b	Starter' motor	A20B

1. Disconnect the electrical connection from the insufficient engine oil pressure warning light sensor.

	Name	Connector
1	Engine oil pressure sensor	K30

Remove the system cable loom.

Refitting ( Removing

) Place the system cable loom back in its housing.Connect the electrical connection to the engine oil pressure warning light sensor.Connect the earth lead to the starter motorand secure it using the nut.Connect the earth lead to the alternator and secure it using the nut.1. Place the catalytic preconverter complete with Lambda sensors and gaskets back in its housing.2. Tighten the bolt securing the catalytic preconverter flexible mounting to the front suspension crossmember.3. Tighten the bolts securing the catalytic preconverter mounting bracket to the crankcase.4. Tighten the nuts fixing the catalytic preconverter to the catalytic converter to the specified torque.

	Fastening	Component	Ø	Value(daNm)
4	Nut	CATALYTIC PRE-CONVERTER	M8	(Catalytic converter side) 2.7 ÷ 3.3

5. Tighten, to the specified torque, the nuts securing the catalytic preconverter to the exhaust manifold.

	Fastening	Component	Ø	Value(daNm)
5	Nut	CATALYTIC PRE-CONVERTER	M8	(Manifold side) 2.7 ÷ 3.3

Proceed with the refitting - 1072C44 exhaust manifold heat shield on bulkhead - r+r .Proceed with the refitting - 7055B54 under-engine guard - r r .Secure the system wiring harness with fastenings to the air chamber.Connect the electrical connection from the enablement solenoid of the changeover device actuator.Connect the electrical connection to the phase transformer electro-magnet.Connect the electrical connection to the cam angle sensorConnect the electrical connection for the Lambda sensor.Connect the electrical connection for the detonation sensor.Connect the electrical connection for the rpm sensor.Connect the engine front coupling.Connect the electrical connection to the fuel vapour solenoid valve.Connect the electrical connection to the throttle body integrated with D.V.L. and secure the electrical wiring.Connect the earth lead to the injection / ignition control unit mount and secure it with its bolt.Connect the electrical connection to the fuel injection-ignition control unit.Connect the earth lead to the intake manifold and secure it using the nut.Connect the electrical connection to the engine coolant temperature sensor.Connect the electrical connections to the injectors.Connect the earth lead to the ignition coils support plate and secure it using the bolt.Secure the electrical wiring to the cam cover using fastenings.Connect the electrical connections to the ignition coils.Proceed with the refitting - 1016A40 ignition coil cover on cylinder head- r+r .Connect the Lambda probe electrical connections.Connect the electrical connection to the air conditioning compressor electromagnet coupling.Refit the intake sleeve and connect it to the throttle body with integrated D.V.L.Connect the oil vapour recovery pipe to the air intake sleeve.Connect the battery terminal (-).Remove the car from the ramp.