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Fuel injection gasoline engine Renault Laguna 2
Petrol injection system specifications
Technical characteristics of the injection system of gasoline engines K4M and F4P Checks performed with the engine idling Technical characteristics of the injection system of gasoline engines L7X Checks performed with...
Technical characteristics of the injection system of gasoline engines K4M and F4P Checks performed with the engine idling Technical characteristics of the injection system of gasoline engines L7X Checks performed with...
Location of injection system elements in the engine compartment
The location of the injection system elements in the engine compartment of the Laguna II with K4M and F4P engines: 1 - fuel vapor recirculation electromagnetic valve; 2 - absolute pressure sensor; 3 - throttle valve...
The location of the injection system elements in the engine compartment of the Laguna II with K4M and F4P engines: 1 - fuel vapor recirculation electromagnetic valve; 2 - absolute pressure sensor; 3 - throttle valve...
Elements of the injection system of K4M and F4P engines
1 - electromagnetic valve for purging the absorber; 5 - ignition coils; 10 - air temperature sensor 2 - absolute pressure sensor: 12 - electromagnetic valve of the camshaft phase regulator (only on F4P engine). 3 -...
1 - electromagnetic valve for purging the absorber; 5 - ignition coils; 10 - air temperature sensor 2 - absolute pressure sensor: 12 - electromagnetic valve of the camshaft phase regulator (only on F4P engine). 3 -...
Elements of the injection system of L7X engines
3 - upper oxygen sensor (rear cylinders); 4 - absolute pressure sensor; 6 - lower oxygen sensor (rear cylinders); 7 - throttle valve unit with servo drive; 11 - coolant temperature sensor 13 - lower oxygen sensor (front...
3 - upper oxygen sensor (rear cylinders); 4 - absolute pressure sensor; 6 - lower oxygen sensor (rear cylinders); 7 - throttle valve unit with servo drive; 11 - coolant temperature sensor 13 - lower oxygen sensor (front...
Features of the SAGEM «S2000» multi-point injection system
The SAGEM S2000 112-pin ECU controls the injection and ignition systems and has multi-point sequential injection (f4P engines). There is no TDC sensor on the camshaft of the first cylinder piston, therefore...
The SAGEM S2000 112-pin ECU controls the injection and ignition systems and has multi-point sequential injection (f4P engines). There is no TDC sensor on the camshaft of the first cylinder piston, therefore...
Features of the BOSCH multi-point injection system
The 128-pin ECU 8OSCH-ME 7.4 6 controls the injection system of the L7X engine. Injection is carried out sequentially in accordance with the firing order of the cylinders (1-6-3-5-2-4). Ignition system with static...
The 128-pin ECU 8OSCH-ME 7.4 6 controls the injection system of the L7X engine. Injection is carried out sequentially in accordance with the firing order of the cylinders (1-6-3-5-2-4). Ignition system with static...
Strategy for coordinating the operation of injection and air conditioning systems (K4M and F4P)
Communication between the air conditioner and the injection system ECU The injection system ECU allows the compressor to be switched on taking into account the power consumed by the compressor and the refrigerant...
Communication between the air conditioner and the injection system ECU The injection system ECU allows the compressor to be switched on taking into account the power consumed by the compressor and the refrigerant...
Strategy for coordinating the operation of the injection and air conditioning systems (L7X)
Communication between the air conditioner and the injection system ECU The injection system ECU allows the compressor to be switched on taking into account the power consumed by the compressor and the refrigerant...
Communication between the air conditioner and the injection system ECU The injection system ECU allows the compressor to be switched on taking into account the power consumed by the compressor and the refrigerant...
Throttle body with servo drive (K4M and F4P)
The throttle valve unit with a servo drive provides regulation of idle speed and filling of the engine cylinders with air. It consists of an electric motor and a potentiometric throttle position sensor with two...
The throttle valve unit with a servo drive provides regulation of idle speed and filling of the engine cylinders with air. It consists of an electric motor and a potentiometric throttle position sensor with two...
Throttle Body with Servo (L7X)
The throttle valve unit with a servo drive provides regulation of idle speed and filling of the feeder cylinders with air. It consists of an electric motor and a potentiometric throttle valve position sensor with two...
The throttle valve unit with a servo drive provides regulation of idle speed and filling of the feeder cylinders with air. It consists of an electric motor and a potentiometric throttle valve position sensor with two...
Idle speed correction depending on coolant temperature (K4M and F4P)
Correction of idle speed depending on battery voltage and electrical energy balance The engine idle speed correction compensates for the voltage drop when the power consumer is switched on if the battery is weakly...
Correction of idle speed depending on battery voltage and electrical energy balance The engine idle speed correction compensates for the voltage drop when the power consumer is switched on if the battery is weakly...
Idle speed correction depending on coolant temperature (L7X)
Correction of idle speed depending on battery voltage and electrical energy balance The engine idle speed correction compensates for the voltage drop when the power consumer is switched on if the battery is weakly...
Correction of idle speed depending on battery voltage and electrical energy balance The engine idle speed correction compensates for the voltage drop when the power consumer is switched on if the battery is weakly...
Adaptive engine idle speed correction (K4M and F4P)
There is an adaptive idle speed correction, but the diagnostic tool does not reflect this function. Under normal operating conditions of a warm engine, the value of the cyclic opening ratio at idle speed changes from...
There is an adaptive idle speed correction, but the diagnostic tool does not reflect this function. Under normal operating conditions of a warm engine, the value of the cyclic opening ratio at idle speed changes from...
Regulation of the composition of the working mixture (K4M and F4P)
Engine with ECU "SAGEM S 2000" equipped with two oxygen sensors: upper and lower. Heating of sensors Heating of oxygen sensors is switched on by the ECU command when the following conditions are met: the intake pressure...
Engine with ECU "SAGEM S 2000" equipped with two oxygen sensors: upper and lower. Heating of sensors Heating of oxygen sensors is switched on by the ECU command when the following conditions are met: the intake pressure...
Adjusting the composition of the working mixture (L7X)
Note: Engine with ECU "BOSCH ME 7.4.6" equipped with two oxygen sensors for each bank of cylinders: upper and lower. Heating of sensors Heating of oxygen sensors is switched on by the ECU command if: battery voltage...
Note: Engine with ECU "BOSCH ME 7.4.6" equipped with two oxygen sensors for each bank of cylinders: upper and lower. Heating of sensors Heating of oxygen sensors is switched on by the ECU command if: battery voltage...
Adaptive correction of the working mixture composition (K4M and F4P)
In a closed control loop, the ECU, when regulating the mixture composition, adjusts the injection duration in such a way as to obtain a dosage as close as possible to mixture composition 1. The correction value is close...
In a closed control loop, the ECU, when regulating the mixture composition, adjusts the injection duration in such a way as to obtain a dosage as close as possible to mixture composition 1. The correction value is close...
Adaptive fuel-air mixture control (L7X)
In a closed control loop, during mixture ratio control (PR 35), the injection duration is adjusted in such a way as to obtain a dosage as close as possible to mixture ratio 1. The correction value is close to 1, and the...
In a closed control loop, during mixture ratio control (PR 35), the injection duration is adjusted in such a way as to obtain a dosage as close as possible to mixture ratio 1. The correction value is close to 1, and the...
Centralized control of coolant temperature (K4M and F4P)
The electric fan of the engine cooling system is controlled by the injection system ECU. Overheat prevention function The overheat prevention system is controlled by the injection system ECU. Information about the...
The electric fan of the engine cooling system is controlled by the injection system ECU. Overheat prevention function The overheat prevention system is controlled by the injection system ECU. Information about the...
Centralized Coolant Temperature Control (L7X)
The electric fan of the engine cooling system is controlled by the injection system ECU. Overheat prevention function The overheat prevention system is controlled by the injection system ECU. Information about the...
The electric fan of the engine cooling system is controlled by the injection system ECU. Overheat prevention function The overheat prevention system is controlled by the injection system ECU. Information about the...
Camshaft Phase Regulator (F4P)
The camshaft phase regulator 1 is located on the intake camshaft. The phase regulator is designed to change the valve timing. It is controlled (on a "yes or no" basis) by the injection system ECU using the...
The camshaft phase regulator 1 is located on the intake camshaft. The phase regulator is designed to change the valve timing. It is controlled (on a "yes or no" basis) by the injection system ECU using the...
Camshaft Phase Regulator (L7X)
The camshaft phase regulator is located on each intake camshaft. Phase regulators are designed to change the valve timing. They are controlled (on a yes/no basis) by the injection system ECU using two electromagnetic...
The camshaft phase regulator is located on each intake camshaft. Phase regulators are designed to change the valve timing. They are controlled (on a yes/no basis) by the injection system ECU using two electromagnetic...
Speed controller and limiter (K4M and F4P)
General information Speed control: allows you to maintain the speed selected by the driver. This function can be deactivated at any time by pressing the brake pedal (clutch pedals on cars with manual transmission) or...
General information Speed control: allows you to maintain the speed selected by the driver. This function can be deactivated at any time by pressing the brake pedal (clutch pedals on cars with manual transmission) or...
Speed controller and limiter (L7X)
General information Speed control: allows you to maintain the speed selected by the driver. This function can be deactivated at any time by pressing the brake pedal, (manual transmission clutch) or one of the system...
General information Speed control: allows you to maintain the speed selected by the driver. This function can be deactivated at any time by pressing the brake pedal, (manual transmission clutch) or one of the system...
Features of the on-board diagnostics system (all engines)
This vehicle is equipped with an on-board diagnostics system, which is characterized by the following signs. When a malfunction is detected that leads to excessive emissions of toxic substances, a warning light comes on...
This vehicle is equipped with an on-board diagnostics system, which is characterized by the following signs. When a malfunction is detected that leads to excessive emissions of toxic substances, a warning light comes on...
Conditions for switching on the on-board diagnostics system warning lamp
Electrical faults The signal lamp lights up continuously after a fault in the same device has been detected several times in a row. The number of misfires that are destructive to the catalytic converter The indicator...
Electrical faults The signal lamp lights up continuously after a fault in the same device has been detected several times in a row. The number of misfires that are destructive to the catalytic converter The indicator...
Conditions for carrying out the diagnostic procedure using the diagnostic system (K4M and F4P)
Conditions for conducting diagnostics If, when the ignition is switched on and while driving, the air temperature measured by the temperature sensor is not between -7.5°C and 119°C, or if the coolant temperature...
Conditions for conducting diagnostics If, when the ignition is switched on and while driving, the air temperature measured by the temperature sensor is not between -7.5°C and 119°C, or if the coolant temperature...
Conditions for performing diagnostics «OBD» (L7X)
Conditions for conducting diagnostics For the OBD system to function properly, there must be no electrical faults in the injection system, even if the OBD warning light does not come on. When diagnosing the catalytic...
Conditions for conducting diagnostics For the OBD system to function properly, there must be no electrical faults in the injection system, even if the OBD warning light does not come on. When diagnosing the catalytic...
Diagnostics of misfires of the mixture (K4M and F4P)
Misfires are recorded to identify malfunctions that lead to the exhaust gas toxicity threshold allowed by the on-board diagnostics system being exceeded, which leads to failure of the catalytic converter. Diagnostics...
Misfires are recorded to identify malfunctions that lead to the exhaust gas toxicity threshold allowed by the on-board diagnostics system being exceeded, which leads to failure of the catalytic converter. Diagnostics...
Misfire Diagnostics (L7X)
Misfires are recorded to identify malfunctions that lead to the exhaust gas toxicity threshold allowed by the on-board diagnostics system being exceeded, which entails the destruction of the catalytic converter....
Misfires are recorded to identify malfunctions that lead to the exhaust gas toxicity threshold allowed by the on-board diagnostics system being exceeded, which entails the destruction of the catalytic converter....
Diagnostics of the catalytic converter (K4M and F4P)
Catalytic converter diagnostics are performed to identify a malfunction that results in exhaust gas toxicity exceeding the threshold permitted by the on-board diagnostics system. An indicator of the condition of the...
Catalytic converter diagnostics are performed to identify a malfunction that results in exhaust gas toxicity exceeding the threshold permitted by the on-board diagnostics system. An indicator of the condition of the...
Catalytic Converter Diagnostics (L7X)
Catalytic converter diagnostics are performed to identify malfunctions that result in exhaust gas toxicity levels exceeding the threshold permitted by the on-board diagnostics system. An indicator of the condition of...
Catalytic converter diagnostics are performed to identify malfunctions that result in exhaust gas toxicity levels exceeding the threshold permitted by the on-board diagnostics system. An indicator of the condition of...
Oxygen sensor diagnostics (K4M and F4P)
Diagnostics of the catalytic converter is performed in order to identify a malfunction that leads to exceeding the toxicity threshold of exhaust gases, permitted by the on-board diagnostics system. It is performed by...
Diagnostics of the catalytic converter is performed in order to identify a malfunction that leads to exceeding the toxicity threshold of exhaust gases, permitted by the on-board diagnostics system. It is performed by...
Oxygen Sensor Diagnostics (L7X)
Catalytic converter diagnostics are performed to detect a malfunction that causes the on-board diagnostics system to exceed the threshold for toxic emissions of hydrocarbons, carbon oxides and nitrogen oxides....
Catalytic converter diagnostics are performed to detect a malfunction that causes the on-board diagnostics system to exceed the threshold for toxic emissions of hydrocarbons, carbon oxides and nitrogen oxides....
Purpose of contacts of the injection system ECU (K4M and F4P)
Connector A H2 - signal from the accelerator pedal position sensor (conductive path 1). H3 - "ground" of the accelerator pedal position sensor (conductive path 1). H4 - "ground" of the power circuit. G2 - power supply...
Connector A H2 - signal from the accelerator pedal position sensor (conductive path 1). H3 - "ground" of the accelerator pedal position sensor (conductive path 1). H4 - "ground" of the power circuit. G2 - power supply...
Injection system ECU pin assignment (L7X)
Connector A AZ - power supply for the absolute pressure sensor. 82 - power supply for the speed controller and speed limiter controls. 83 - absolute pressure sensor signal. SZ - "ground" of the absolute pressure sensor....
Connector A AZ - power supply for the absolute pressure sensor. 82 - power supply for the speed controller and speed limiter controls. 83 - absolute pressure sensor signal. SZ - "ground" of the absolute pressure sensor....
Diagnostics of the injection system of a gasoline engine (Motronic ME 7.4.6)
Description of the system The system includes: ECU Bosch ME 7.4.6; throttle body with servo drive (EGAS: Electronic Engine Air Filling System); adsorber; evaporative Canister Purge Solenoid Valve; absolute pressure...
Description of the system The system includes: ECU Bosch ME 7.4.6; throttle body with servo drive (EGAS: Electronic Engine Air Filling System); adsorber; evaporative Canister Purge Solenoid Valve; absolute pressure...
Troubleshooting Algorithm
No connection with ECU Test the diagnostic tool on another vehicle. Check it out; communication between the diagnostic tool and the vehicle's diagnostic connector (good condition of wiring); fuses for protecting the...
No connection with ECU Test the diagnostic tool on another vehicle. Check it out; communication between the diagnostic tool and the vehicle's diagnostic connector (good condition of wiring); fuses for protecting the...
Removal and installation the accelerator pedal position sensor
The sensor is rigidly connected to the accelerator pedal. To replace it, you need to replace the accelerator pedal. There are two types of pedals: with or without a switch. Vehicles equipped with a speed...
The sensor is rigidly connected to the accelerator pedal. To replace it, you need to replace the accelerator pedal. There are two types of pedals: with or without a switch. Vehicles equipped with a speed...
Removal and installation of the fuel injection system ECU
The injection system ECU is located under the battery shelf. To remove the unit, you need to remove the battery shelf, which is secured with three non-removable bolts. Removal Disconnect and remove the battery....
The injection system ECU is located under the battery shelf. To remove the unit, you need to remove the battery shelf, which is secured with three non-removable bolts. Removal Disconnect and remove the battery....
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Other sections on other Renault models
➽ Power unit: Fuel injection Renault Fluence 1 (2009-2020, petrol)
➽ Power unit: Diesel injection system Renault 19 (1988-1996)
➽ 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
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