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: Owner Maintenance Schedule
When you stop for fuel: Check the engine oil level. Check coolant level in the engine coolant reservoir. Check the windshield washer fluid level. Check for low or under-inflated tires. WARNING Be careful when checking your engine coolant level when the engine is hot. This may result ...

Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Warning Lamp Activation Warning Lamp Behavior after Ignition On As soon as the operating voltage is applied to the SRSCM ignition input, the SRSCM activates the warning lamp for a LED lamp check. The lamp shall turn on for 6 seconds during the initialization phase and be turned off afterw ...