REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Almera (from 1995 to 1999, the year of issue)

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Nissan
	Almera
		General Information
		General requirements for car repair
		Operation and maintenance of car
		Petrol engines
			Removal and installation of the power unit
			Disassembly and assembly of the engine
			Cylinder block
			The connecting rod-piston group
			The crankshaft and flywheel
			Valve gear
			The cylinder head and engine GA14DE GA16DE
			The cylinder head of the engine SR20DE
			Cooling system
			Lubrication system
			Exhaust
			Power system
			Integrated engine management system (KSUD)
				Fuel injection control subsystem
				Subsystem control ignition timing
				Preliminary checks
				Check the electrical parameters of the engine management system
				Self-diagnosis KSUD
				Check and adjust idle speed and CO content in the exhaust gases
				Check and installation of the initial ignition timing
				Checking the technical condition of the knock sensor (on the motor SR20DE)
		Diesel engines
		Transmission
		Chassis
		A steering
		The brake system
		Electrical
		Body
		Applications
		Scheme of electrical equipment

printable version

Integrated engine management system (KSUD)

Fuel injection control subsystem

Subsystem control ignition timing

Preliminary checks

Check the electrical parameters of the engine management system

Self-diagnosis KSUD

Check and adjust idle speed and CO content in the exhaust gases

Check and installation of the initial ignition timing

Checking the technical condition of the knock sensor (on the motor SR20DE)

Cars with engines GA14DE, GA16DE and SR20DE equipped with an integrated engine management system (KSUD) Nissan ECCS. KSUD designed to control fuel injection and ignition timing (POPs). It consists of two subsystems: the fuel injection control and management of POPs. Both systems are interconnected and operate synchronously. Synchronization of the subsystem and the main engine operation is performed by the controller of the sensor signals. A single controller for both subsystems, based on information received from the sensors, according to the memorized program controls the actuators. This automatically optimizes the CPP, the amount and time of fuel depending on engine operation. In violation of some sensors the controller switches to the backup management program. This allows you to continue driving the vehicle in the event of a fault.

Fig. 2.88. The structural layout of the complex engine management system (KSUD): 1 - the storage battery;

2 - the switch of the air conditioner; 3 - the ignition switch; 4 - warning light KSUD; 5 - the controller; 6 - the gauge of speed of movement; 7 - position sensor shift lever; 8 - the ignition distributor (with the camshaft position sensor and the engine speed of the engine and the ignition switch); 9 - the catalytic converter; 10 - the gauge of the oxygen content in the exhaust gases (oxygen sensor);

11 - a spark plug; 12 - the fuel injector; 13 - the fuel pressure regulator;

14 - a regulator of idling; 15 - a regulator of the accelerated idling; 16 - the thermostat higher idle speed the engine is cold; 17 - Air mass meter; 18 - the throttle body; 19 - throttle position sensor; 20 - air filter; 21 - solenoid valve recovery of fuel vapors and exhaust gas recirculation (EGR); 22 - EGR valve; 23 - the valve differential pressure; 24 - the fuel tank; 25 - the fuel pump; 26 - absorber;

27 - the coolant temperature sensor; 28 - the fuel filter

Fig. 2.89. Accommodation units KSUD GA14DE and GA16DE engines in the engine compartment: 1 - the gauge of pressure in the power steering system; 2 - the throttle body; 3 - Air mass meter; 4 - throttle position sensor; 5 - a regulator of idling; 6 - coolant temperature sensor; 7 - the fuel injector; 8 - control fast idle speed; 9 - thermostat higher idle speed the engine is cold; 10 - solenoid valve EGR system and the fuel vapor recovery; 11 - the valve differential pressure; 12 - EGR valve; 13 - the gauge of speed of movement; 14 - the fuel pressure regulator; 15 - the gauge-distributor; 16 - the gauge of pressure of the refrigerant compressor; 17 - the gauge of position of the shift lever; 18 - the gauge of the oxygen content in the exhaust gases; 19 - the relay of the fan starts (1st speed with automatic transmission); 20 - space for the relay of inclusion of the fan (2nd speed only if an automatic transmission); 21 - the relay of the air conditioner

Fig. 2.90. Location units KSUD SR20DE engine in the engine compartment: 1 - the gauge of pressure in the power steering system; 2 - knock sensor; 3 - control of idling and fast idle speed; 4 - the gauge of the selector lever position; 5 - throttle position sensor; 6 - the fuel pressure regulator; 7 - the gauge of speed of movement; 8 - the canister bleed solenoid valve (fuel vapor recovery); 9 - the fuel filter;

10 - Air mass meter; 11 - the ignition (ignition coil, switch, sensor-valve, the camshaft position sensor and the engine speed of the engine; 12 - a control resistor; 13 - the gauge of the oxygen content in the exhaust gases (oxygen sensor); 14 - the fuel injectors; 15 - coolant temperature sensor

Fig. 2.91. Accommodation units KSUD in the car: 1 - the controller; 2 - supply relay; 3 - the relay of inclusion of the fuel pump (for access to the relay, remove the mounting block)

The construction scheme KSUD presented in Fig. 2.88. Accommodation units KSUD in the engine compartment is shown in Fig. 2.89 and 2.90, in the car - on Fig. 2.91.

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