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Diesel fuel injection Renault Laguna 2
Diesel injection system specifications
Technical characteristics of the injection system of diesel engines G9T Technical characteristics of the injection system of diesel engines F9Q
Technical characteristics of the injection system of diesel engines G9T Technical characteristics of the injection system of diesel engines F9Q
Fuel equipment (diesel engines F9Q)
Peculiarities The high-pressure direct fuel injection system with a common rail provides a metered supply of fuel at a specific point in time. The system includes: low pressure pump located between the suction unit and...
Peculiarities The high-pressure direct fuel injection system with a common rail provides a metered supply of fuel at a specific point in time. The system includes: low pressure pump located between the suction unit and...
Location of injection system elements in the engine compartment
Location of injection system components in the engine compartment of the Lagira II with G9T engines (indexes 706. 707): 1 - fuel filter with heater; 2 - camshaft position sensor; 3 - electromagnetic valve for regulating...
Location of injection system components in the engine compartment of the Lagira II with G9T engines (indexes 706. 707): 1 - fuel filter with heater; 2 - camshaft position sensor; 3 - electromagnetic valve for regulating...
Injection system warning lights
On vehicles equipped with a high-pressure diesel fuel injection system, there are two sets of injection system warning lights if the vehicle is equipped with a conventional instrument cluster, and four sets of injection...
On vehicles equipped with a high-pressure diesel fuel injection system, there are two sets of injection system warning lights if the vehicle is equipped with a conventional instrument cluster, and four sets of injection...
Electronic anti-theft engine immobilizer system
This car is equipped with a 3rd generation electronic anti-theft engine start blocking system, therefore, the ECU replacement is performed using a special method. Replacing the injection system ECU Attention! In this...
This car is equipped with a 3rd generation electronic anti-theft engine start blocking system, therefore, the ECU replacement is performed using a special method. Replacing the injection system ECU Attention! In this...
Air injection system coordination strategy
Communication between the injection system ECU and the air conditioning system ECU Air conditioning compressor with variable refrigeration capacity. The injection system ECU and the air conditioning ECU are connected to...
Communication between the injection system ECU and the air conditioning system ECU Air conditioning compressor with variable refrigeration capacity. The injection system ECU and the air conditioning ECU are connected to...
Engine idle speed correction
Correction of engine idle speed in case of malfunction of the position sensor If the accelerator pedal position sensor is faulty, the idle speed is maintained at 1200 min⁻¹. If there is a discrepancy between the signals...
Correction of engine idle speed in case of malfunction of the position sensor If the accelerator pedal position sensor is faulty, the idle speed is maintained at 1200 min⁻¹. If there is a discrepancy between the signals...
Operating principle of the pre-heating and post-heating system
Pre-heating and subsequent heating are controlled by a special control unit. Variable preheating The duration of the warning light and the supply of voltage to the pre-heating plugs depends on the coolant temperature...
Pre-heating and subsequent heating are controlled by a special control unit. Variable preheating The duration of the warning light and the supply of voltage to the pre-heating plugs depends on the coolant temperature...
Speed controller and limiter
General information The speed controller allows the driver to maintain the speed selected by the driver. This function can be switched off at any time by pressing the brake pedal, clutch pedal or one of the system keys....
General information The speed controller allows the driver to maintain the speed selected by the driver. This function can be switched off at any time by pressing the brake pedal, clutch pedal or one of the system keys....
Operation of the speed controller
Conditions for entering the mode: switch in the "speed control" position; gear 2 is engaged; the speed of the car is 30 km/h; the regulator indicator light is on (in green); pressing the "+", "-" or "resume" key....
Conditions for entering the mode: switch in the "speed control" position; gear 2 is engaged; the speed of the car is 30 km/h; the regulator indicator light is on (in green); pressing the "+", "-" or "resume" key....
Removal and installation pre-heating plugs
Note: The resistance of one glow plug is 0.6 Ohm. Removal of pre-start glow plugs is performed without disconnecting high-pressure fuel lines. Removal Disconnect the glow plug electrical connector. Clean the area around...
Note: The resistance of one glow plug is 0.6 Ohm. Removal of pre-start glow plugs is performed without disconnecting high-pressure fuel lines. Removal Disconnect the glow plug electrical connector. Clean the area around...
Immersion heater
All four immersion heaters are installed on the engine cooling system's critical box, mounted under the manifold, in the engine-gearbox interface area. This system is designed to heat the coolant. The immersion heaters...
All four immersion heaters are installed on the engine cooling system's critical box, mounted under the manifold, in the engine-gearbox interface area. This system is designed to heat the coolant. The immersion heaters...
Removal and installation the low pressure fuel pump (booster pump)
Note: The fuel lift pump is located in the engine compartment. Removal Caution: Take precautions due to the presence of fuel under residual pressure in the fuel lines. Attention! On the fuel filter, at the point where...
Note: The fuel lift pump is located in the engine compartment. Removal Caution: Take precautions due to the presence of fuel under residual pressure in the fuel lines. Attention! On the fuel filter, at the point where...
Removal and installation the fuel filter (engines F9Q, index 754)
The fuel filter is located in the engine compartment. The filter is installed in a non-separable housing. The filter housing contains a control valve that limits the amount of diesel fuel supplied to the engine. It is...
The fuel filter is located in the engine compartment. The filter is installed in a non-separable housing. The filter housing contains a control valve that limits the amount of diesel fuel supplied to the engine. It is...
Removal and installation the fuel filter (F9Q engines, index 750)
The fuel filter is located in the engine compartment. The filter is installed in a non-separable housing. This housing contains a diesel fuel heater. To replace the filter, the unit must be removed. Removal Caution:...
The fuel filter is located in the engine compartment. The filter is installed in a non-separable housing. This housing contains a diesel fuel heater. To replace the filter, the unit must be removed. Removal Caution:...
Checking fuel pressure and supply
Low pressure check (created by the booster pump) Connect the Mot. 1311-08 tee to connect the Mot. 1311-01 or Mot. 1328 test pressure gauge to measure the pressure at the outlet (S) of the fuel filter or the inlet of the...
Low pressure check (created by the booster pump) Connect the Mot. 1311-08 tee to connect the Mot. 1311-01 or Mot. 1328 test pressure gauge to measure the pressure at the outlet (S) of the fuel filter or the inlet of the...
Removal and installation of fuel injection pump
Caution! Before performing any work, connect the aftermarket diagnostic tool, establish communication with the injection system ECU and ensure that the fuel rail is not under pressure. Take precautions against possible...
Caution! Before performing any work, connect the aftermarket diagnostic tool, establish communication with the injection system ECU and ensure that the fuel rail is not under pressure. Take precautions against possible...
Removal and installation the fuel rail
Removal Disconnect: battery; fuel pressure sensor 1; injectors 2; camshaft position sensor. Disconnect the high-pressure fuel lines from the ramp by unscrewing the fittings. Seal the holes with plugs. Carefully remove...
Removal Disconnect: battery; fuel pressure sensor 1; injectors 2; camshaft position sensor. Disconnect the high-pressure fuel lines from the ramp by unscrewing the fittings. Seal the holes with plugs. Carefully remove...
Removal, cleaning and installing injectors
Caution! Before performing any work, connect the aftermarket diagnostic tool. Establish communication with the injection system ECU and make sure that the fuel rail is not under pressure. Take precautions against...
Caution! Before performing any work, connect the aftermarket diagnostic tool. Establish communication with the injection system ECU and make sure that the fuel rail is not under pressure. Take precautions against...
Removal and installation the fuel pressure sensor
Warning! Before performing any work, connect the aftermarket diagnostic tool. establish communication with the injection system ECU and make sure that the fuel rail is not under pressure. Take precautions against...
Warning! Before performing any work, connect the aftermarket diagnostic tool. establish communication with the injection system ECU and make sure that the fuel rail is not under pressure. Take precautions against...
Removal and installation the fuel pressure regulator
Attention! It is prohibited to remove the pressure regulator on the SRZ fuel injection pump. Warning! Before performing any work, connect the aftermarket diagnostic tool, establish communication with the injection...
Attention! It is prohibited to remove the pressure regulator on the SRZ fuel injection pump. Warning! Before performing any work, connect the aftermarket diagnostic tool, establish communication with the injection...
Removal and installation the fuel pedal position sensor
The fuel pedal position sensors are rigidly connected to the latter. To replace the sensor, you need to replace the fuel pedal. There are two types of pedals: With or without a switch. Vehicles equipped with a speed...
The fuel pedal position sensors are rigidly connected to the latter. To replace the sensor, you need to replace the fuel pedal. There are two types of pedals: With or without a switch. Vehicles equipped with a speed...
Centralized coolant temperature control
Coolant temperature sensor (provides information to the injection system ECU and the coolant temperature indicator on the instrument panel). The sensor has 3 contacts, two of which send information about the coolant...
Coolant temperature sensor (provides information to the injection system ECU and the coolant temperature indicator on the instrument panel). The sensor has 3 contacts, two of which send information about the coolant...
Diagnostics of the injection system of diesel engines Bosch EDC15C13
General scheme of diagnostics To save energy, the vehicle's central electronic control system stops supplying "+" voltage after the ignition switch after 3 minutes. To diagnose the ECU, you can force "+" after the...
General scheme of diagnostics To save energy, the vehicle's central electronic control system stops supplying "+" voltage after the ignition switch after 3 minutes. To diagnose the ECU, you can force "+" after the...
Replacement or reprogramming of the ECU
When replacing or reprogramming the ECU, the following two steps must be performed: SC003 "Save ECU data" and SC001. Registering saved data Command SC003 is used before replacing or reprogramming the ECU. This allows...
When replacing or reprogramming the ECU, the following two steps must be performed: SC003 "Save ECU data" and SC001. Registering saved data Command SC003 is used before replacing or reprogramming the ECU. This allows...
Replacing the exhaust gas recirculation valve (EGR valve)
After replacing the EGR valve, the adjustment offset of the new valve must be recorded in the ECU memory(condition 0 km)and the adjustment offset stored when the "ignition" was last switched off (during the ECU...
After replacing the EGR valve, the adjustment offset of the new valve must be recorded in the ECU memory(condition 0 km)and the adjustment offset stored when the "ignition" was last switched off (during the ECU...
Control of fault indicator lamps
Control of switching on of signal lamps on the instrument panel depending on detected faults Summary table of states
Control of switching on of signal lamps on the instrument panel depending on detected faults Summary table of states
Flushing the high-pressure fuel pump (HPFP)
Only for SR1 fuel injection pump This operation may introduce particles into the drain circuit that may block or interfere with the operation of the pressure regulator. These particles then settle in the fuel filter. To...
Only for SR1 fuel injection pump This operation may introduce particles into the drain circuit that may block or interfere with the operation of the pressure regulator. These particles then settle in the fuel filter. To...
Checking the low pressure circuit
Fuel injection pump SRZ (checking the fuel filter) Check the fuel filter for correctness (RENAULT filter with the corresponding part number). Check the position and degree of contamination of the filter element. Check...
Fuel injection pump SRZ (checking the fuel filter) Check the fuel filter for correctness (RENAULT filter with the corresponding part number). Check the position and degree of contamination of the filter element. Check...
Checking the charge air supply circuit
With the engine not running, check for leaks (air leak or suction) low and high pressure air tract (before and after turbocharger). Check for excessively oily areas, which indicate a leak. Components to be tested...
With the engine not running, check for leaks (air leak or suction) low and high pressure air tract (before and after turbocharger). Check for excessively oily areas, which indicate a leak. Components to be tested...
Checking the mass air flow sensor
Contamination of the grids (external examination) Remove the mass air flow sensor. There should be no foreign objects on the screens (see picture below). Do not clean the screens with compressed air or any other method...
Contamination of the grids (external examination) Remove the mass air flow sensor. There should be no foreign objects on the screens (see picture below). Do not clean the screens with compressed air or any other method...
Pneumatic actuator of turbocharger boost pressure regulator
(with fixed geometry of the guide vane) With the engine not running, check by hand whether the valve actuator rod is jammed. If the rod is jammed, replace the turbocharger. At idle, when controlling the boost pressure...
(with fixed geometry of the guide vane) With the engine not running, check by hand whether the valve actuator rod is jammed. If the rod is jammed, replace the turbocharger. At idle, when controlling the boost pressure...
Checking the drive of the variable geometry turbocharger guide vane
With the engine not running Check manually whether the guide vane position adjustment drive rod is jammed. If the rod is jammed, replace the turbocharger. Check the condition of the turbine and compressor by visual...
With the engine not running Check manually whether the guide vane position adjustment drive rod is jammed. If the rod is jammed, replace the turbocharger. Check the condition of the turbine and compressor by visual...
Checking the turbocharger rotor
With the engine cold and not running, disconnect the air supply line from the turbocharger and check the rotation of the turbine and compressor shafts by turning them by hand. If the shaft does not rotate, replace the...
With the engine cold and not running, disconnect the air supply line from the turbocharger and check the rotation of the turbine and compressor shafts by turning them by hand. If the shaft does not rotate, replace the...
Checking the exhaust gas recirculation valve
Valve position diagnostics (f9Q engine) Clear faults from memory. Using command RZ002 "Adaptive correction parameters of the exhaust gas recirculation valve" try to reinitialize the operating parameters of the exhaust...
Valve position diagnostics (f9Q engine) Clear faults from memory. Using command RZ002 "Adaptive correction parameters of the exhaust gas recirculation valve" try to reinitialize the operating parameters of the exhaust...
Malfunction of injectors
Checking the identity of fuel supply regulation for each injector On the CUP instrument, select the "Fuel supply system" function. When the engine is idling and the fuel temperature > 50°C display the fuel delivery...
Checking the identity of fuel supply regulation for each injector On the CUP instrument, select the "Fuel supply system" function. When the engine is idling and the fuel temperature > 50°C display the fuel delivery...
Checking the identity of the amount of fuel returned from the injectors
The engine starts Drain pipes must be installed on the nozzles. Start the engine. Switch the CUP diagnostic tool to the parameter display mode. Warm up the engine. Check the fuel temperature using parameter PR063 "Fuel...
The engine starts Drain pipes must be installed on the nozzles. Start the engine. Switch the CUP diagnostic tool to the parameter display mode. Warm up the engine. Check the fuel temperature using parameter PR063 "Fuel...
Installation and removal of the Mot. 1760 tool
Remove the engine protection. Disconnect the drain pipe assembly (do not remove the holders). Press the holder. Pull vertically the tip 1 of the drain pipe. Caution! Do not pull too hard to avoid damaging the fragile...
Remove the engine protection. Disconnect the drain pipe assembly (do not remove the holders). Press the holder. Pull vertically the tip 1 of the drain pipe. Caution! Do not pull too hard to avoid damaging the fragile...
Checking the tightness of the injector nozzle
Check the level and condition of the engine oil. If diesel fuel is present in the engine oil, the nozzle of a leaky injector will have an oily appearance. Disconnect the pre-heating relay connector. Make sure this is...
Check the level and condition of the engine oil. If diesel fuel is present in the engine oil, the nozzle of a leaky injector will have an oily appearance. Disconnect the pre-heating relay connector. Make sure this is...
Checking the amount of fuel returned from the relief valve
The engine is running normally The fuel drain line of the safety valve must be installed on the fuel rail. Start the engine. Place the diagnostic tool in the parameter display mode. Warm up the engine. Read the fuel...
The engine is running normally The fuel drain line of the safety valve must be installed on the fuel rail. Start the engine. Place the diagnostic tool in the parameter display mode. Warm up the engine. Read the fuel...
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Other sections on other Renault models
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➽ Power unit: Fuel injection Renault Fluence 1 (2009-2020, petrol)
➽ Power unit: Injection system (petrol) Renault Scenic 1 (1996-2003)
➽ Power unit: Injection system Renault Megan 2 (2002-2009, petrol)
➽ Power unit: Petrol injection system (K4M) Renault Duster 1 (2009-2017)
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- General information
- User manual
- Maintenance
- Power unit
- Engine repair
- Cooling system
- Fuel system
- Fuel injection (petrol)
- Power system (petrol)
- Fuel injection (diesel)
- Fuel system (diesel)
- Exhaust system
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis, running gear
- Wheels and tires
- Car suspension
- Steering
- Brake system
- Body and interior
- Exterior (external elements)
- Doors, locks and windows
- Electrical equipment
- Power devices
- Equipment and devices
- Headlights and lighting
- Breakers and switches
- Safety system
- Electrical circuits