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) Service Manual: Troubleshooting
Troubleshooting SymptomPossible causeRemedyHard steeringImproper front wheel alignmentExcessive turning resistance of lower arm ball jointLow tire pressureNo power assistCorrectReplaceAdjustRepair and replacePoor return of steering wheel to centerImproper front wheel alignmentCorrectPoor or rou ...

Hyundai Elantra AD (2016-2020) Owners Manual: Trunk
Opening the trunk ■ Outside (if equipped) 1. Make sure the shift lever is in P (Park). 2. Then do one of the following : Hold down the trunk unlock button located on your key fob or smart key for more than 1 second. Additionally, for vehicles equipped with smart key : - While all d ...