Hyundai Palisade: Engine Control System / Manifold Absolute Pressure Sensor (MAPS)
Description and operation
Manifold Absolute Pressure Sensor (MAPS) is a speed-density type sensor 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 made of silicon diaphragm, which has the
pressure sensitive variable resistor effect of semi-conductor.
Because one side of the silicon diaphragm is 100% vacuum and the other is affected
by the manifold pressure, this sensor can output analog signal by using the
silicon variation proportional to pressure change.
![Hyundai Palisade. Description and operation](images/manifold_absolute_pressure_sensor_maps_-516/390/hyundai_palisade__description_and_operation_925.gif)
Specifications
Pressure (kPa)
|
Output Voltage (V)
[Vref = 5V]
|
20.0
|
0.79
|
46.66
|
1.84
|
101.32
|
4.0
|
![Hyundai Palisade. Specifications](images/manifold_absolute_pressure_sensor_maps_-516/390/hyundai_palisade__specifications_926.gif)
Schematic diagrams
![Hyundai Palisade. Schematic diagrams](images/manifold_absolute_pressure_sensor_maps_-516/390/hyundai_palisade__schematic_diagrams_927.gif)
Harness Connector
![Hyundai Palisade. Schematic diagrams](images/manifold_absolute_pressure_sensor_maps_-516/390/hyundai_palisade__schematic_diagrams_928.gif)
Repair procedures
1. |
Connect the diagnostic tool on the Data Link Connector (DLC).
|
2. |
Measure the output voltage of the MAPS during idle with IG ON.
Pressure (kPa)
|
Output Voltage (V)
[Vref = 5V]
|
20.0
|
0.79
|
46.66
|
1.84
|
101.32
|
4.0
|
|
1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
|
2. |
Disconnect the vacumm hose (A).
|
3. |
Disconnect the manifold absolute pressure sensor connector (B).
|
4. |
Remove the sensor after loosening the mounting bolt.
Manifold Absolute Pressure Sensor (MAPS) mounting bolt :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
|
![Hyundai Palisade. Repair procedures](images/manifold_absolute_pressure_sensor_maps_-516/390/hyundai_palisade__repair_procedures_929.gif)
|
• |
Install the component to the specified torque.
|
• |
Note that internal damage may occur if the component is dropped.
In this case, inspect the component before installation.
|
|
• |
Insert the sensor in the installation hole and be careful not
to damage it during installation.
|
|
1. |
Install in the reverse order of removal.
|
Description and operation
Description
Mounted inside the Manifold Absolute Pressure Sensor, Intake Air Temperature
Sensor (IATS) detects the intake air temperature...
Description and operation
Description
Located in the engine coolant passage of the cylinder head, Engine Coolant Temperature
Sensor (ECTS) detects the engine coolant temperature...
Other information:
Exterior Care
Exterior general caution
It is very important to follow the label
directions when using any chemical
cleaner or polish. Read all warning
and caution statements that appear
on the label.
Protecting your vehicle's finish
Washing
To help protect your vehicle’s finish
from rust and deterioration, wash it
thoroughly and frequently at least
once a month with lukewarm or cold
water...
Specification
Item
Specification
Power source
3V
Operating temperature
-20°C to +60°C (-4°F to- +140°F)
RF Modulation
FSK
LF Modulation
ASK
RF frequency
433...
Categories
![Hyundai Palisade. Air bag inflation conditions](images/books/1/hyundai_palisade_air_bag_inflation_conditions_113.png)
Front air bags
Front air bags and the driver's knee
air bag are designed to inflate in a
frontal collision depending on the the
severity of impact of the front collision.
![Hyundai Palisade. Air bag inflation conditions](images/books/1/hyundai_palisade_air_bag_inflation_conditions_114.png)
![Hyundai Palisade. Air bag inflation conditions](images/books/1/hyundai_palisade_air_bag_inflation_conditions_115.png)
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