Hyundai Elantra: Engine Control System / Manifold Absolute Pressure Sensor (MAPS) Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / Manifold Absolute Pressure Sensor (MAPS) Description and Operation

Description

Manifold Absolute Pressure Sensor (MAPS) is a speed-density type sensor and is installed on the surge tank. It senses absolute pressure of the surge tank and transfers the analog signal proportional to the pressure to the ECM. By using this signal, the ECM calculates the intake air quantity and engine speed.

The MAPS consists of a piezo-electric element and a hybrid IC amplifying the element output signal. The element is silicon diaphragm type and adapts pressure sensitive variable resistor effect of semi-conductor. Because 100% vacuum and the manifold pressure apply to both sides of the sensor respectively, this sensor can output analog signal by using the silicon variation proportional to pressure change.

ETC (Electronic Throttle Control) System Repair procedures

Inspection Throttle Position Sensor (TPS) 1. Connect the GDS on the Data Link Connector (DLC). 2. Start the engine and measure the output voltage of TPS 1 and 2 at C.T. and W.O.T. Thrott ...

Manifold Absolute Pressure Sensor (MAPS) Specifications

Specification Pressure [kPa (kgf/cm?, psi)]Output Voltage (V)20.0 (0.20, 2.9)0.7946.7 (0.47, 6.77)1.84101.3 (1.03, 14.7)4.0 ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Storing Positions into Memory
1. Check that the shift lever is in P (Park) while the ignition switch is in the ON position. 2. Adjust the driver’s seat position, side view mirror position and instrument panel illumination intensity to positions comfortable for the driver. 3. Press the SET button. The system will beep onc ...

Hyundai Elantra AD (2016-2020) Service Manual: Intake Actuator Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the intake actuator connector. 3. Verify that the intake actuator operates to the fresh position when connecting 12V to terminal 3 and grounding terminal 4. Verify that the intake actuator operates to the recirculation position w ...