Diesel Injection Specifications Specifications of the G9T diesel injection system Specifications of F9Q Diesel Engine Injection System
Fuel equipment (F9Q diesel engines) Peculiarities The high-pressure direct injection system with a common rail provides a metered supply of fuel at a certain point in time. The system includes: low pressure pump located between the suction unit and the...
Injection warning lights On vehicles equipped with a high pressure diesel fuel injection system, there are two systems of signal lamps for the injection system. if the vehicle is equipped with a conventional instrument panel, and four systems...
Electronic anti-theft engine start lock system This car is equipped with a 3rd generation electronic anti-theft engine start blocking system, therefore, to replace the ECU, it is made according to a special technique. Replacing the injection computer Attention! In...
Air Injection Coordination Strategy Communication between the injection computer and the air conditioning computer Variable air conditioning compressor. The injection computer and the air conditioning computer are connected via a multiplex network....
Engine idle correction Correction of idling of the engine in case of a malfunction of the position sensor If the pedal position sensor malfunctions, the idle speed is maintained at 1200 min -1 . In the event of a discrepancy between the...
The principle of operation of the pre-heating and post-heating system Pre-heating and post-heating are controlled by a special control unit. Variable preheating The duration of the warning light and the voltage supply to the glow plugs depends on the temperature of the coolant and the...
Regulator and speed limiter General information The speed controller allows you to maintain the speed selected by the driver. This function can be deactivated 8 at any time by pressing the brake pedal, clutch pedal or one of the system buttons....
Operation of the speed controller Conditions for entering the mode: switch in position «speed control»; gear 2 engaged; vehicle speed 30 km/h; control indicator light on (in green); pressing a key «+», «-» or «resume». Exit Conditions Hard pressing on...
Removal and installation of spark plugs Note. The resistance of one glow plug is 0.6 ohm. The glow plugs can be removed without disconnecting the high pressure fuel lines. Removing Disconnect the glow plug electrical connector. Clean the area around the glow...
Immersion heater All four immersion heaters are installed on a critical box of the engine cooling system, installed under the manifold. in the interface zone of the engine - gearbox. This system is designed to heat the coolant. The...
Removal and installation of the low pressure fuel pump (booster pump) Note. The fuel pump is located in the engine compartment. Removing Attention! Take precautions for the presence of fuel under residual pressure in the fuel lines. Attention! On the fuel filter, where the fuel return...
Removal and installation of the fuel filter (F9Q engines, index 754) The fuel filter is located in the engine compartment. The filter is installed in a non-separable housing. A control valve is located in the filter housing, which limits the amount of diesel fuel supplied to the engine....
Removal and installation of 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 the diesel fuel heater. The assembly must be removed to replace the filter. Removing...
Checking pressure and fuel supply Low pressure test (generated by booster pump) Connect tee Mot. 1311 -08 for connecting test pressure gauge Mot. 1311-01 or Mot. 1328 for downstream pressure measurement (S) fuel filter or high pressure pump inlet....
Removal and installation of injection pump Attention! Before carrying out any work, connect the aftermarket diagnostic tool, communicate with the injection computer and check that the injection rail is not pressurized. Take precautions against possible burns...
Removal and installation of the fuel distribution rail Removing Disconnect: battery; fuel pressure sensor 1; nozzles 2; camshaft position sensor. Disconnect the high pressure fuel lines from the rail by unscrewing the fittings. Plug the holes with plugs. Carefully remove...
Removal, cleaning and installation of nozzles Attention! Before carrying out any work, connect the after-sales diagnostic tool. Establish communication with the injection computer and check that the injection rail is not pressurized. Take precautions against...
Removal and installation of the fuel pressure sensor Attention! Before carrying out any work, connect the after-sales diagnostic tool. communicate with the injection computer and check. that the fuel rail is not under pressure. Take precautions against possible burns from...
Removal and installation of the fuel pressure regulator Attention! It is forbidden to remove the pressure regulator on the high pressure fuel pump SRZ. Attention! Before carrying out any work, connect the after-sales diagnostic tool, communicate with the injection computer...
Centralized coolant temperature control coolant temperature sensor (provides information to the injection computer and the coolant temperature gauge on the instrument panel). The sensor has 3 contacts, through two of which information is provided on the...
Diagnostics of the Bosch EDC15C13 diesel injection system General scheme of diagnostics To save energy, the vehicle's UCH cuts off the power supply «+» after the ignition switch after 3 min. To diagnose the computer, you can force the «+» after the ignition switch for 1 hour....
ECU replacement or reprogramming When replacing or reprogramming the ECU, follow these two steps: SC003 «Save ECU data» and SC001. Registering Stored Data The SC003 command is used before replacing or reprogramming the ECU. This allows some data to be...
Replacement of the exhaust gas recirculation valve (SROG valve) After replacing the EGR valve, the adjustment offset of the new valve must be stored in the ECU memory (state 0 km) and adjustment offset memorized the last time it was switched off «ignition» (during the self-feeding...
Fault indicator light management Control of the inclusion of signal lamps on the instrument panel, depending on the detected malfunctions Status Summary Table
Flushing the high pressure fuel pump (injection pump) Only for injection pump SR1 This operation may introduce particles into the drain circuit which may block or impair the operation of the pressure regulator. These particles then settle in the fuel filter. For flushing,...
Checking the low pressure circuit TNVD SRZ (fuel filter check) Check fuel filter compliance (RENAULT filter with matching part number). Check the position and degree of contamination of the filter element. Check the installation and condition of the...
Checking the charge air circuit With the engine off, check the tightness (air leak or leak) air path of low and high pressure (before and after turbocharger). Check for excessively oily areas that indicate a leak. Checked Components Condition and...
Checking the Mass Air Flow Sensor Mesh contamination (visual inspection) Remove the mass air flow sensor. Nets must be free of foreign objects (see picture below). Do not clean the screens with compressed air or in any other way: this will damage the...
Pneumatic actuator for turbocharger boost pressure regulator (with fixed guide vane geometry) With the engine off, check by hand to see if the throttle actuator rod is jammed. If the stem is stuck, replace the turbocharger. At idle, while operating the boost pressure control...
Checking the drive of the variable geometry turbocharger guide vane With the engine off Check with your hand whether the actuator rod for adjusting the position of the guide vanes is jammed. If the stem is stuck, replace the turbocharger. Visually check the condition of the turbine and...
Checking the turbocharger rotor With the engine cold and not running, disconnect the air supply pipe 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...
Exhaust Gas Recirculation Valve Check Valve Position Diagnosis (F9Q engine) Clear fault memory. With command RZ002 «Parameters of adaptive EGR recirculation correction» try to reinitialize the operating parameters of the EGR recirculation valve. Turn off...
Injector malfunction Checking the identity of the fuel supply regulation for each nozzle On the CUP, select the function «Fuel supply system». With the engine idling and fuel temperature > 50°C, display the fuel delivery rate correction...
Fitting and removing tool Mot. 1760 Remove the engine protection. Disconnect the drain pipe assembly (do not remove holders). Click on the holder. Pull the tip 1 of the drain pipe vertically. Attention! Do not pull too hard to avoid damaging the fragile...
Checking the tightness of the nozzle 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 look oily. Disconnect the preheat relay connector. Verify that this is not caused by an...
Checking the amount of fuel returned from the safety valve Engine running fine The relief valve fuel drain line must be installed on the fuel rail. Start the engine. Set the scan tool to parameter display mode. Warm up the engine. Read the value of the fuel temperature using...