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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Hyundai Santa FE (2006 release)

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Hyundai Santa FE
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Hyundai
Santa FE
Operation and maintenance of car
Engine
Maintenance (engines 2,0 / 2,4 l)
Mechanical (engines of 2.0 / 2.4 L).
Cooling system (engines 2,0 / 2,4 l)
Intake and exhaust systems (engines 2,0 / 2,4 l)
Maintenance (2.7 liter engine)
Mechanical (engine displacement of 2.7 liters.)
Cooling system (engines of 2.7 liters)
Lubrication System (engines of 2.7 liters)
Emission
Fuel system
Distributed fuel injection
Troubleshooting control fuel injection
The control system distributed injection of fuel
Fuel delivery system
Removal, check and installation oplivoprovodov lines and drain the fuel vapor
Troubleshooting on diagnostic codes
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Troubleshooting on diagnostic codes



Principle of operation of diagnostics and parameter assignment
Air flow sensor (MAF) in the air nozzle located behind the air filter.
The sensor measures the mass flow rate of air flowing through the inlet pipe to the engine, while it generates an electrical signal. Electronic engine control module (ECM) is the signal generated by the sensor as a voltage signal and uses this signal to generate a base control signal duration nozzle and ignition timing.
As the air mass flow increases the voltage generated by the sensor.

Principle of operation and purpose
Air temperature sensor in the intake manifold (IAT sensor) integrated in the absolute pressure sensor in the intake manifold (MAP sensor). The sensor is a resistor that changes its own resistance according to the temperature of the incoming air to the intake manifold. On the basis of the sensor signal electronic engine control unit adjusts the length of the nozzle opening signal (time base of the open state of the fuel injector). If the measured temperature is low, the electronic engine control unit enriches the air-fuel mixture, increasing the duration of the signal injector opening. If the measured temperature is high, the electronic engine control unit reduces the duration of injector opening signal.

Principle of operation and purpose
Coolant temperature (ECT sensor) installed in the duct of the cooling jacket of the cylinder head. The sensor is a thermistor which changes its own resistance according to the temperature of the engine coolant, which flows around the sensor. If the coolant temperature is low, the resistance of the sensor is large. If the coolant temperature is high, the resistance of the sensor is small. Electronic engine control unit checks the voltage of the sensor signal of the coolant temperature and on the basis of sensor adjusts the duration of the signal injector opening and ignition timing. If the coolant temperature is very low, the electronic engine control unit enriches the air-fuel mixture (increase the length of the nozzle opening signal) and increases the ignition timing (pre-ignition sets). If the coolant temperature increases, the electronic engine control unit reduces the duration of the signal injector opening and ignition timing (set later ignition).

Principle of operation and purpose
Throttle Position Sensor (TPS) is mounted on the wall of the throttle body and is connected to the axis of the throttle. The throttle position sensor is a resistor (potentiometer) that changes its own resistance depending on the position of the throttle. When you press the accelerator pedal sensor resistance decreases, and when you release the accelerator pedal - the resistance of the sensor increases. TPS sensor includes a sensor-switch is fully closed throttle position. The switch closes when the throttle is fully closed. Electronic engine control unit delivers a control voltage at the throttle position sensor (TPS) and then measures the voltage on the sensor signal. On the basis of the sensor signal electronic engine control unit adjusts the signal length of the nozzle opening and ignition timing. Signal throttle position sensor (TPS) together with the sensor signal of the absolute manifold pressure (MAP sensor) used an electronic engine control unit to determine the load on the engine.

Principle of operation and purpose
To ensure that the lowest concentration of CO (carbon monoxide), HC (unburned hydrocarbons) and NOx (nitrogen oxides) in exhaust gases, three-way catalyst is used. For a more efficient use of the catalytic converter, the fuel system should be prepared working mixture of a certain composition called stoichiometric. The oxygen sensor has such a characteristic in which its output (voltage) changes sharply in the region of the stoichiometric air-fuel ratio. Such characterization is used to determine the oxygen concentration in exhaust gas and delivers a feedback signal to the electronic control unit to adjust the composition of the mixture. If the air-fuel mixture becomes poor, the concentration of oxygen in the exhaust gas increases and the oxygen sensor signal when the electronic control unit informs about it (the electromotive force at the output of the oxygen sensor is almost equal to 0). If the air-fuel mixture becomes richer than the stoichiometric composition of the mixture, the concentration of oxygen in the exhaust gases is reduced and the oxygen sensor informs the ECU about the enrichment of the mixture (the electromotive force increases to 1).
Electronic control unit, in accordance with the magnitude of the electromotive force of the oxygen sensor determines the degree of deviation from the stoichiometric composition of the mixture and, accordingly, adjusts the required amount of fuel injected by changing the length of the injector driver signal. However, when malfunction of the oxygen sensor at its output appears inadequate signal (voltage), the electronic control unit, in this case, can not perform a proper command for correcting the fuel. Oxygen sensors are usually equipped with a heater which heats the sensor element is zirconium. The heater is controlled by an electronic control unit. At low cost of the intake air (exhaust gas temperature is low), the electronic control unit supplies an electric current to the heater, which heats the oxygen sensor: it provides a measurement accuracy of oxygen in the exhaust gases.

Principle of operation and purpose
When the ignition key is in the ?�ON?� (?�On.") Or the ?�START?� (?�Start?�), the voltage is supplied to the ignition coil. Ignition coil consists of two windings (primary and secondary). Candlestick high voltage wires connect the ignition coil to the spark plug of each cylinder of the engine. The ignition coil causes a spark discharge (flash) of the spark plug at each work cycle (for the cylinder on the compression stroke and the cylinder on the exhaust stroke). The first ignition coil causes a spark from the spark plug cylinder ?��1 and ?��4. The second ignition coil causes a spark from the spark plugs of cylinders ?��2 and ?��3. The electronic engine control unit is integrated switching to the "masses" scheme to enable the primary winding of the ignition coil. Electronic engine control unit uses the signal to the crankshaft position sensor to determine the engine power on the winding. After interrupting (turning on and off) of current in the primary winding of the ignition coil, the secondary coil high voltage pulse is induced, which causes a spark discharge of spark plugs connected.

Principle of operation and purpose
The vehicle speed sensor produces a signal pulse when the vehicle type. The electronic control unit monitors the sensor output.




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