Features of the Sagem S3000 multipoint injection system Pic. 2.225. The location of the elements of the injection system in the engine compartment of a Megane II car with a K4J engine: 1 - solenoid valve for fuel vapor recirculation; 2 - absolute pressure sensor; 3 -...
Fuel mixture control (F4R, K4M) Heated sensors Heated oxygen sensors are switched on by the ECU under the following conditions: the intake pressure is below a certain threshold, depending on the engine speed; speed below 135 km/h; after the engine has...
Camshaft Phase Control (F4R, K4M) The phase regulator is designed to change the valve timing. Pic. 2.228. Camshaft phase regulator: 1 - phase regulator To improve the filling of the cylinders with the working mixture in all modes, the K4M and F4R...
Modes of operation of the phase regulator (K4M) Pic. 2.229. Phase regulator solenoid valve: 1 - valve Oil is supplied to the phase regulator through a solenoid valve mounted on the cylinder head (pic. 2.229). The valve is energized in the form of a variable signal of...
Operation and control of the phase regulator (F4R) Pic. 2.230. Phase regulator solenoid valve: 1 - valve The phase shifter is disabled or is controlled by the injection computer via a solenoid valve located on the cylinder head cover (pic. 2.230). At a crankshaft speed...
Removal and installation of oxygen sensors Upstream oxygen sensors Pic. 2.231. Removing the upstream oxygen sensor: 1 - sensor Remove the oxygen sensor using the tool (Mot. 1495-01) (pic. 2.231). Lower oxygen sensors - removal and installation Pic. 2.232....
Removing and installing the accelerator pedal position sensor The position sensor forms one assembly with the accelerator pedal. Together with the sensor, the accelerator pedal must also be replaced. Two types of accelerator pedal can be installed on the car: with or without a...
Crankshaft position and speed sensor After replacing the crankshaft position and speed sensor or flywheel, program the target area of the flywheel ring gear. Perform two consecutive decelerations in 3rd gear from 4000 rpm –1 until the fuel supply is...
Removal and installation of the ECU of the petrol engine injection system Removing Remove the engine top covers. Disconnect the wires from the battery terminals, starting with the negative terminal. Disconnect the injection computer connectors. Pic. 2.235. ECU location: 1 - connectors Unscrew...
Removal and installation of the throttle body (K4J) Removing Disconnect the wires from the battery terminals, starting with the negative terminal. Remove the air filter housing. Pic. 2.236. Disconnecting the wiring harness from the throttle body and the evaporative...
Removal and installation of the throttle body (K4M) Removing Disconnect the wires from the battery terminals, starting with the negative terminal. Pic. 2.238. Removing the air duct: 1 - air duct Remove the air line (pic. 2.238). Disconnect the wiring harness from the...
Removal and installation of the throttle body (F4R) Removing Remove the engine top covers. Move the air line aside. Pic. 2.240. Removing the evaporative emission hose: 1 - air duct; 2 – a hose of system of catching of vapors of fuel Remove the evaporative emission hose...
Cleaning the throttle body Attention! Wear protective goggles and gloves when performing this operation. Perform all operations in a clean work area to prevent contamination from entering the throttle body. Remove the throttle body. Pic. 2.242....
Diagnosis of malfunctions of the injection system Troubleshooting ECU name: Sagem S3000 Program number: A7 Diagnostic software version number (Vdiag): 44 Troubleshooting ECU name: Sagem S3000 Program number: AD Diagnostic software version number (Vdiag): 4C