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 Doblò Factory Service Manual (2000-2010)08 · Engine
08 · Engine

Cng injection wiring harness - arrange

Make
Fiat
Model
Doblò Factory Service Manual
Year
2000–2010
Section
Cng fuel system › Cng injection wiring harness - arrange
EngineCng injection wiring harness - arrange

Cng injection wiring harness - arrange

Operation 1058A90 · Gas circuit multi point injection

BIPOWER

Removing

Place the car on a lift.

Disconnect the battery negative terminal.

- 5050B34 windscreen wiper arm/s complete with blade - r+r

- 7055A18 Windscreen base TRIM - R.R.

- 1058A80 cng injection unit control unit - r r

- 1056B82 injection/ignition system e.c.u. (one) - r + r

1. Release the wiring harness from the retaining bands located below the control units mounting bracket.

2. Undo the nut securing the CNG control unit earth lead.

NameConnector
2Methane injection control unit earthC62
Cng injection wiring harness - arrange

1. Undo the nut securing the earth lead on the engine compartment bulkhead.

2. Undo the nuts (2a) and withdraw the cable pass buffer (2b).

3. Pass the wiring harness in the engine compartment through the hole in the engine compartment bulkhead.

Cng injection wiring harness - arrange

- 1048A32 sleeve from air cleaner to intake manifold - r + r

1. Disconnect the electrical connection for the methane pressure sensor.

NameConnector
1Methane pressure sensorK54

2. Disconnect the electrical connections of the methane adjustment solenoid.

NameConnector
2Methane regulation solenoidL61A
NameConnector
2Methane regulation solenoidL61B

3. Disconnect the electrical connection from the intake air temperature sensor.

NameConnector
3Integrated air temperature sensorK43

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

NameConnector
4Fuel vapour recovery solenoidL10

5. Disconnect the electrical connection for the upstream Lambda sensor on the catalyzer.

NameConnector
5Lambda sensor on pre-catalyzerK15

6. Disconnect the electrical connection from the butterfly position sensor.

NameConnector
6Throttle position sensorK56

7. Disconnect the electrical connection from the idle actuator.

NameConnector
7Idle actuatorN74
Cng injection wiring harness - arrange

1. Disconnect the electrical connections for the ignition coil.

NameConnector
1Ignition 'coilA30

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

NameConnector
2Coolant temperature sender unitK45

3. Disconnect the electrical connections for the methane injectors.

NameConnector
3Methane injectorN72

4. Disconnect the petrol injectors electrical connection.

NameConnector
4Injector junctionD81

Release the wiring from the retaining bands.

Cng injection wiring harness - arrange

- 7055B54 under-engine guard - r r.

1. Undo the nuts (1a) and release the wiring harness protection (1b).

2. Disconnect the electrical connection for the rpm sensor.

NameConnector
2RPM sensorK46

3. Disconnect the electrical connection for the detonation sensor.

NameConnector
3Detonation sensorK50

4. Disconnect the electrical connector for the oil pressure sensor.

NameConnector
4Insufficient engine oil pressure (switch) sensorK30

5. Disconnect the electrical connection for the starter motor.

NameConnector
5Starter motorA20

6. Disconnect the electrical connection for the alternator.

NameConnector
6AlternatorA10

7. Disconnect the electrical connection for the timing sensor.

NameConnector
7Timing sensorK47

8. Disconnect the electrical connection on the air conditioning compressor.

NameConnector
8Air conditioning compressor "on" electromagnetL20
Cng injection wiring harness - arrange

1. Disconnect the electrical connection for the speedometer sensor.

NameConnector
1Speedometer sensorK84

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

NameConnector
2Lambda sensor on catalyzerK17

Open the wiring retaining band.

Cng injection wiring harness - arrange

Lower the vehicle on the lift.

Remove the engine bay junction unit cover, then release the control unit from the clips securing it to the mount.

1. Disconnect the engine bay junction unit electrical connection (1a), disconnect facia wiring harness connectors (1b) and (1c).

NameConnector
1aEngine compartment junction unitB1
NameConnector
1bJunction unit under dashboardB2
NameConnector
1cFront/engine couplingD4

Fold the cable loom onto the power unit.

Release the wiring from the retaining clips in the battery cradle area, then remove it from the engine compartment.

Cng injection wiring harness - arrange

Refitting

Position the wiring harness in the engine compartment.

Close the wiring retaining bands on the battery cradle.

Connect the dashboard cable loom connectors.

NameConnector
Front/engine couplingD4
NameConnector
Junction unit under dashboardB2

Connect the electrical connection to the engine bay control unit coupling.

NameConnector
Engine compartment junction unitB1

Fit the junction unit in its original position and do up the clips securing it to the protective cover.

Refit the cover for the junction unit in the engine compartment.

Raise the vehicle on a lift.

Connect the electrical connection for the rear Lambda sensor.

NameConnector
Lambda sensor on catalyzerK17

Close the wiring retaining band.

Connect the electrical connection of the speedometer sensor.

NameConnector
Speedometer sensorK84

Connect the electrical connection to the air conditioner compressor.

NameConnector
Air conditioning compressor "on" electromagnetL20

Connect the timing sensor electrical connection.

NameConnector
Timing sensorK47

Connect the electrical connection to the alternator.

NameConnector
AlternatorA10

Connect the electrical connection to the starter motor.

NameConnector
Starter motorA20

Connect the electrical connection for the oil pressure sensor.

NameConnector
Insufficient engine oil pressure (switch) sensorK30

Connect the electrical connection for the detonation sensor.

NameConnector
Detonation sensorK50

Connect the electrical connection for the rpm sensor.

NameConnector
RPM sensorK46

Tighten the wiring loom protection retaining nuts.

- 7055B54 under-engine guard - r r.

Lower the car from the ramp.

Connect the petrol injectors electrical connection.

NameConnector
Injector junctionD81

Connect the methane injectors electrical connections.

NameConnector
Methane injectorN72

Connect the electrical connection for the engine coolant temperature sensor.

NameConnector
Coolant temperature sender unitK45

Connect the electrical connection for the ignition coil.

NameConnector
Ignition 'coilA30

Secure the wiring using the retaining bands.

Connect the electrical connection for the idle actuator.

NameConnector
Idle actuatorN74

Connect the electrical connection for the butterfly position sensor.

NameConnector
Throttle position sensorK56

Connect the electrical connection for the upstream Lambda sensor on the catalyzer.

NameConnector
Lambda sensor on pre-catalyzerK15

Connect the electrical connection for the fuel vapour recovery solenoid.

NameConnector
Fuel vapour recovery solenoidL10

Connect the electrical connection for the intake air temperature sensor.

NameConnector
Integrated air temperature sensorK43

Connect the electrical connections for the methane adjustment solenoid.

NameConnector
Methane regulation solenoidL61A
NameConnector
Methane regulation solenoidL61B

Connect the methane pressure sensor electrical connection.

NameConnector
Methane pressure sensorK54

- 1048A32 sleeve from air cleaner to intake manifold - r + r.

Pass the wiring through the cable pass buffer and then through the hole in the engine compartment bulkhead.

Tighten the nuts securing the cable pass buffer to the engine compartment bulkhead.

Secure the earth lead to the engine compartment bulkhead using the nut.

Position the wiring under the control units mounting bracket and secure it by means of the retaining bands.

Secure the CNG control unit earth lead.

NameConnector
Methane injection control unit earthC62

- 1056B82 injection/ignition system e.c.u. (one) - r + r

- 1058A80 cng injection unit control unit - r r

- 7055A18 Windscreen base TRIM - R.R.

- 5050B34 windscreen wiper arm/s complete with blade - r+r

Connect the battery negative terminal.

Remove the car from the ramp.

Parts & tools for this job Staging For 2000 Fiat Doblò

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