Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: 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.

Specifications
Specification
Pressure
[kPa (kgf/cm², psi)]
Output Voltage (V)
[Vref = 5.0V]
10 (0.10, 1.45)
0.5
40 (0.40, 5.80)
0.91
80 (0.81, 11.60)
1.47
120 (1.22, 17.40)
2.02
160 (1.63, 23.20)
2.57
200 (2.03, 29.00)
3.12
220 (2.24, 31.90)
3.4
240 (2.44, 34.80)
3.67
280 (2.85, 40.61)
4.22
300 (3.05 43.51)
4.5

Schematic diagrams
Circuit Diagram

Harness Connector

Repair procedures
Inspection
1.
Connect a diagnostic tool on Data Link Connector (DLC).
2.
Check MAPS output voltage at idle and IG ON.
Condition
Output Voltage (V)
IG ON
3.9 - 4.1
Idle
0.8 - 1.6

Removal
1.
Turn ignition switch OFF and disconnect the battery negative (-) terminal.
2.
Disconnect the manifold absolute pressure sensor connector (A).
3.
Remove the manifold absolute pressure sensor (B) after loosening the bolt.
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Installation
   
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
   
Insert the sensor in the installation hole and be careful not to damage when installation.
1.
Install in the reverse order of removal.

    ETC (Electronic Throttle control) System

    Description and operation DescriptionThe Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS)...

    Intake Air Temperature Sensor (IATS)

    Description and operation DescriptionIntake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure Sensor and detects the intake air temperature...

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Description and operation


    DescriptionThe Dual Clutch Transmission (DCT) control system measures required data to identify the state of the control target and computes the appropriate compensation value if adjustment is necessary. The actuator is controlled according to the computed compensation value to obtain desired output...

    Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Electrochromic mirror (ECM) with HomeLink® system


    Your vehicle may be equipped with a Gentex Automatic-Dimming Mirror with an Integrated HomeLink® Wireless Control System. During nighttime driving, this feature will automatically detect and help reduce rearview mirror glare. The HomeLink® Universal Transceiver allows you to activate your garage door(s), electric gate, home lighting, etc...

    Categories

    Steering wheel audio control

    The steering wheel audio control switches are installed for your convenience.

    NOTICE

    Do not operate audio remote control buttons simultaneously.

    VOLUME (VOL + / VOL -) (1)

    Move the VOLUME toggle switch up to increase volume. Move the VOLUME toggle switch down to decrease volume.

    read more

    Copyright © 2025 www.helantra7.com