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.

Description and operation
Description
The Electronic Throttle Control (ETC) System consists of a throttle body with
an integrated control motor and throttle position sensor (TPS).
Specification
Pressure (kPa)
Output Voltage (V)
20.0
0.79
46.7
1.
Other information:
Removal
Interior 1 Antenna
Take care not to scratch the crash pad and related parts.
1.
Disconnect the negative (-) battery terminal.
Description and operation
Description
Back view camera will activate when the backup light is ON with the ignition
switch ON and the shift lever in the R position.
This system is a supplemental system that shows behind the vehicle through the
H/UNIT or the ECM (Reverse Display Room Mirror) mirror while backing-up.