Hyundai Tucson: Engine Control System / Manifold Absolute Pressure Sensor (MAPS) Description and Operation
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.

Inspection
Throttle Position Sensor (TPS)
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Start the engine and measure the output voltage of TPS 1 and 2 at C.T. and W.O.T.
Specific ...
Specification
Pressure[kPa (kgf/cmx, psi)]Output Voltage (V)20.0 (0.20, 2.9)0.7946.7 (0.47, 6.77)1.84101.3 (1.03, 14.7)4.0
...
Other information:
Hyundai Tucson (LM) 2010-2015 Service Manual: 4WD ECU Repair procedures
Replacement
1.
Prior to replacing the 4WD ECU, check the 4WD ECU's clutch learing with the GDS tool.
(Refer to 4WD Control System - "Adjustment")
2.
Disconnect the battery negative cable from the battery
3.
Disconnect the 4WD ECU connector (A).
4.
Loosen the nust (A) and then remo ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Checking the parking brake
Foot type
Check whether the stroke is within specification when the parking brake pedal
is depressed with 44 lb (20 kg, 196 N) of force. Also, the parking brake alone should
securely hold the vehicle on a fairly steep grade. If the stroke is more or less
than specified, have the parking b ...