Engine management system Sensors 1. Air mass sensor (MAFS) 2. OX temperature sensor (ECTS) 3. Crankshaft position sensor (CKPS) 4. Camshaft position sensor (CKPS) 5. Front oxygen sensor (HO2S)...
Components of the engine management system 1. Engine control unit (ITUC) or powertrain control unit (AKP) 2. Air mass sensor (MAPS) 3. Air temperature sensor (IATS) 4. Throttle position sensor (TPS) 5. Coolant...
Peripherals of the engine management system A significant part of the malfunctions in the engine control system occurs due to a violation of the switching conditions for the peripheral devices of the system and...
Checking the timing solenoid valve (OCV) Valve check Switch off the ignition and disconnect the valve connector. Measure the resistance of the valve winding with an ohmmeter. Rated value: 6.9-7.9 ohms (at...
Checking the oxygen sensor (HO2S) Waveform Check To speed up the warm-up of the oxygen sensor, the ECM energizes the sensor heating elements, except during cold starts and sudden accelerations. The ECM...
Checking the coolant temperature sensor (ECTS) Sensor test Remove the coolant temperature sensor and place the measuring part of the sensor in water. While slowly heating the water, measure the resistance of the...
Checking the Throttle Position Sensor (TPS) Sensor test With the ignition off, disconnect the sensor connector and measure the circuit resistance between tracks 2 and 3. Rated value: 1.6-2.4 ohms. By opening and...
Checking the knock sensor (KS) Wiring check With the ignition on, measure the voltage between the pins of the wired part of the connector and «weight». Circuit under test Rated voltage Contact 1 -...
Checking the Idle Air Control (ISCA) Waveform Check With the engine running at idle, check the regulator signal: 1 - Closing control signal; 2 - Opening control signal. Regulator check Switch off the...