KIA Niro: Mass Air Flow Sensor (MAFS)
Description
MAFS uses a sensing element made of a hot-film to measure the mass of intake
air entering the engine
and to send the signal to the 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.
Circuit Diagram
Harness Connector
Mass Air Flow Sensor (MAFS) Repair procedures
Inspection
- Visually check the MAFS for the following:
- Correct mounting direction
- Any contamination, corrosion or damage on connector
- Clogged or wet air cleaner
- Deformation or blocked MAFS cylinder by foreign material
- Check for any leakage on intake system and intercooler system.
Removal
- Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
- Disconnect the mass air flow sensor connector (A) and the installation clamp (B).
- Remove the mass air flow sensor (C).
Mass air flow sensor mounting bolt : 3.9 - 5.8 N*m (0.4 - 0.6 kgf*m, 2.8 - 4.3 lb*ft) Mass air flow sensor clamp mounting screw : 2.9 - 4.9 N*m (0.3 - 0.5 kgf*m, 2.2 - 3.6 lb*ft)
Installation
Warning
- Install the component to the specified torque.
- Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
Warning
Be careful not to damage the sensing element and the honey cell.
- Install in the reverse order of removal.
READ NEXT:
Intake Air Temperature Sensor (IATS)
Specification
Description
Mounted inside the Manifold Absolute Pressure Sensor, Intake Air Temperature
Sensor (IATS) detects
the intake air temperature.
To precisely calculate the amount of air, correction of the air temperature is
requ
Engine Coolant Temperature Sensor (ECTS)
Specification
Description
Located in the engine coolant passage of the cylinder head, Engine Coolant
Temperature Sensor
(ECTS) detects the engine coolant temperature. The ECTS uses a thermistor with
resistance in
proportion to the tempera
Crankshaft Position Sensor (CKPS)
Specification
Crankshaft Position Sensor (CKPS) Description and operation
Description
Crankshaft Position Sensor (CKPS) is one of the most important sensors of the
engine control system
that detects the crankshaft position. Lack of CKPS sig
SEE MORE:
Limitations of Remote Smart
Parking Assist
In the following circumstances, Remote
Smart Parking Assist performance to
park or exit the vehicle may be limited,
there may be a risk of collision, or
Remote Smart Parking Assist may turn
off. Park or exit the vehicle manually if
necessary.
Engine clutch actuator fluid
Checking the engine clutch actuator fluid level
(Kia NIRO Hybrid)
In normal driving conditions, the actuator
fluid level does not go down rapidly.
However, oil consumption rate may rise
as vehicle mileage increases, and leakage
in actuato
Categories
- Home
- KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual
- Kia Niro - First generation - (2017-2022) - Service and Repair Manual