Hyundai Tucson: 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 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 semiconductor.
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.
Specification
Circuit Diagram
Harness Connector
Inspection
- Connect a diagnostic tool on Data Link Connector (DLC).
- Check MAPS output voltage at idle and IG ON.
Removal
- Turn ignition switch OFF and disconnect the battery negative (-) terminal.
- Disconnect the manifold absolute pressure sensor connector (A).
- 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
WARNING
- 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.
WARNING
Insert the sensor in the installation hole and be careful not to damage when installation.
- Install in the reverse order of removal.
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Intake Air Temperature Sensor (IATS)
Description
Intake Air Temperature Sensor (IATS) is included inside Manifold Absolute
Pressure Sensor and
detects the intake air temperature.
To calculate precise air quantity, correction of the air temperature is needed
because air density
Engine Coolant Temperature Sensor (ECTS)
Description
The Engine Coolant Temperature Sensor (ECTS) is located in the cylinder block
and cylinder head,
and measures the temperature of the engine coolant. The thermistor of the
cooling water temperature
and resistance has a negative temp
Crankshaft Position Sensor (CKPS)
Description
Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one
of the most important
sensors of the engine control system. If there is no CKPS signal input, fuel is
not supplied.That is,
vehicle can't run without
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Forward Collision-Avoidance Assist (FCA) (Sensor fusion)
Basic function
Forward Collision-Avoidance Assist is
designed to help detect and monitor the
vehicle ahead or help detect a pedestrian
or cyclist in the roadway and warn the
driver that a collision is imminent with
a warning message and an
Air ventilation seat
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the surface
of the seat cushions and seatbacks.
When the operation of the air ventilation
seat is not needed, keep the switches in
t
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
