TucsonDataManu

.com

Hyundai Tucson: Mass Air Flow Sensor (MAFS)

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Control - Fuel System / Mass Air Flow Sensor (MAFS)

Description

MAFS uses a hot-film type sensing element to measure the mass of intake air entering the engine, and send the signal to ECM.

A large amount of intake air represents acceleration or high load conditions while a small amount of intake air represents deceleration or idle.

The ECM uses this information to control the EGR solenoid valve and correct the fuel amount.

Specifications

Specifications

Circuit Diagram

Circuit Diagram

Harness Connector

Harness Connector

Inspection

Inspection

  1. Check the MAFS visually.
  • Mounting direction correct.
  • Any contamination, corrosion or damage on connector.
  • Air cleaner's clogging or wet.
  • MAFS cylinder's deforming or blocking by any foreign material.
  1. Check any leakage on intake system and intercooler system.

Removal

  1. Turn the ignition switch OFF and disconnect the battery (-) cable.
  2. Disconnect the mass air flow sensor connector (A) and the installation clamp (B).
  3. Remove the mass air flow sensor (C) after loosening mounting bolt.

Tightening Torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Installation

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.
  • Be careful not to damage or deformation the sensing element and front grid.
  • Insert the sensor in the installation hole and be careful not to damage when installation.
  1. Install in the reverse order of removal.

    READ NEXT:

     Boost Pressure Sensor (BPS)

    Description Boost pressure sensor (BPS) is installed on top of intercooler output pipe to measures the pressure of supercharged air in the turbocharger. Specification Circuit Diagram Harness Connector Inspection Connect th

     ETC (Electronic Throttle control) System

    Description The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS). Instead of the traditional throttle cable, an Accelerator Position Sensor (APS) is used to

     Manifold Absolute Pressure Sensor (MAPS)

    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 u

    SEE MORE:

     Tailgate back panel

    Component Location Tailgate back panel Replacement WARNING Put on gloves to prevent hand injuries. WARNING Take care not to scratch the tailgate and body surface. Remove the tailgate lower trim. (Refer to Tail Gate - "Tail G

     SRSCM - Installation

    Installation Install in the reverse of the removal. After installing the SRSCM, confirm proper system operation. WARNING SIf the Switch ON the ignition, the SRS indicator light should turn on for about six seconds and then off. Variant

    Information