Car engine management system Hyundai Matrix

Checking the engine management system with distributed injection
Malfunction of the engine control system elements with distributed injection (sensors, ECU, injectors, etc.) causes the fuel supply to stop and its insufficient supply...

Malfunction indicator lamp (with European OBD)
The malfunction indicator lamp lights up to warn the driver that there is a malfunction in the vehicle. However, if the detected malfunction does not occur after 3...

Malfunction indicator lamp (without European OBD)
The malfunction indicator lamp lights up to warn the driver that there is a malfunction in the vehicle. However, if the detected malfunction does not occur after 3...

Relationship between fault codes and vehicle driving characteristics
Fig. 2.237. Diagram of the relationship between fault codes and the characteristics of the vehicle driving process 1. If the same malfunction is detected and persists...

Absolute pressure sensor
The absolute pressure sensor is a strain gauge that measures the pressure in the receiver. Inside the sensor is a metal diaphragm connected to a small wire. Changes in...

Absolute pressure sensor malfunction indicator light
The Malfunction Indicator Lamp (Malfunction Indicator Lamp for Engine Management) comes on or diagnostic trouble codes are displayed on the HI-SCAN in the following...

Intake air temperature sensor
The intake air temperature sensor is built into the absolute pressure sensor in the intake manifold. The sensor is designed as a variable resistor, the resistance of...

Intake Air Temperature Sensor Malfunction Indicator Lamp
The Malfunction Indicator Lamp (Malfunction Indicator Lamp for Engine Management) comes on or diagnostic trouble codes are displayed on the HI-SCAN in the following...

Coolant temperature sensor
The coolant temperature sensor is installed in the coolant pipeline on the cylinder head. The sensor is made in the form of a thermistor, the resistance of which changes...

Throttle position sensor
Fig. 2.244. Throttle position sensor The throttle position sensor is shown in Fig. 2.244. The throttle position sensor is mounted on the side of the throttle body, the...

Oxygen concentration sensor (with heating)
The engine control unit uses the signals from the oxygen sensor to regulate the composition of the fuel-air mixture, ensuring optimum fuel economy and reducing harmful...

Causes of injector failure
1. Possible causes of difficulty starting a hot engine may be insufficient fuel pressure and fuel leaks through the injectors. 2. If the injectors do not work when the...

Checking the functionality of the injectors by ear
Fig. 2.251. Checking injectors with a stethoscope Using a stethoscope, listen to the clicking sounds of the injectors when idling (Fig. 2.251). Check that the clicking...

Checking the resistance at the injector terminals
Fig. 2.253. Checking the resistance at the injector terminals Disconnect the electrical connector of the injector and check the resistance at its terminals (Fig. 2.253)....

Ignition coil
When the ignition key is set to the ON or START position, voltage is supplied to the ignition coil. The ignition coil consists of two coils. Each of them is connected by...

Knock sensor
The knock sensor is mounted on the cylinder block. The sensor senses the vibrations of the cylinder block walls that occur during detonation. The piezoelectric element...

Crankshaft position sensor
The crankshaft position sensor is an electromagnetic coil with a magnetic core and is installed near the flywheel. The sensor signal is generated when a toothed signal...

Camshaft Position Sensor
The camshaft position sensor (CPS) is used to determine the TDC of the compression stroke of the 1st cylinder. Based on the information from the camshaft position...

Catalytic converter
The efficiency of the catalytic converter is demonstrated by its ability to oxidize carbon monoxide and hydrocarbons (CH). The engine control unit compares the signals...

Evaporative Evaporative Canister Purge Solenoid Valve
The purge solenoid valve is part of the fuel vapor recovery system. The valve supplies purge air to the fuel vapor absorber. Fig. 2.262. Evaporative Evaporative Blow-Off...

Idle speed control valve
The idle speed controller has two windings controlled by two separate stages of the engine control unit. Depending on the duty cycle of the control pulse sequence, the...

System for regulating the composition of the working mixture
The system for regulating the composition of the working mixture, in addition to a certain number of sensors, includes the following elements and systems: engine intake...

Vehicle speed sensor
The acceleration sensor is used to detect road irregularities. The sensor signal is used by the engine control unit to prevent erroneous misfiring. The vehicle speed...

Electronic engine control unit
Fig. 2.267. Electronic control unit The electronic control unit is shown in Fig. 2.267. Fig. 2.268. Connection diagram of the ECU with the "ground"

Air Conditioner Switch and Relay
Fig. 2.269. Wiring diagram of the air conditioner relay and the ECU When the air conditioner is switched on, the battery voltage is supplied to the engine control unit...

Injectors — General Description
The injectors are of the electromagnetic type. When voltage (control pulse) is applied to the injector winding, the injector needle valve opens and fuel is sprayed under...

Checking the oxygen sensor for proper operation
If the oxygen sensor is faulty, the toxicity of the exhaust gases may increase sharply. If the oxygen sensor is working properly, but its signal voltage is not normal,...

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