Hyundai Azera: Manifold Absolute Pressure Sensor (MAPS) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Manifold Absolute Pressure Sensor (MAPS) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / 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.
Intake Air Temperature Sensor (IATS) Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the IATS connector.
3.
Measure resistance between the IATS terminals 3 and 4.
4.
Check that the resistance is within the speci ...
Manifold Absolute Pressure Sensor (MAPS) Specifications
Specification
Pressure [kPa (kgf/cm?, psi)]Output Voltage (V)20.0 (0.20, 2.90)0.7946.66 (0.47, 6.77)1.84101.32 (1.03, 14.7)4.0
...
See also:
Wheel Repair procedures
Lug nut tightening sequence
Tighten the hub nuts as follows.
Tightening torque:
88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)
When using an impact gun, final tigh ...
Smart Cruise Control Unit Repair procedures
Removal
1.
Remove the bumper.
(Refer to Body - "Front Bumper Cover")
2.
Loosen the bolts and nuts and then remove the smart cruise control unit assembly (A) from the vehicle.
3.
Disconn ...
Repair procedures
Inspection
Check it by the procedure below to see if the function of the ECM is normal.
1.
Turn the ignition key to the "ON" position.
2.
Cover the front sensor to stop functioning.
3.
Sh ...
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