Hyundai Santa Fe (TM): 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 diagnostic tool on the Data Link Connector (DLC).
2.
Specification
Pressure (kPa)
Output Voltage (V)
20.0
0.79
46.7
1.
Other information:
Description
The heater unit includes mode control actuator and temperature control actuator.
The temperature control actuator is located at the heater unit. It regulates
the temperature by the procedure as follows.
Signal from control unit adjusts the position of the temperature door by operating
the temperature switch
Removal
•
When removing with a flat-tip screwdriver or remover, wrap protective
tape around the tools to prevent damage to components.