Hyundai Veloster: 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.

ETC (Electronic Throttle Control) System. Repair procedures

Inspection Throttle Position Sensor (TPS) 1. Connect the GDS on the Data Link Connector (DLC). 2. Start the engine and measure the output ...

Manifold Absolute Pressure Sensor (MAPS). Specifications

Specification Pressure [kPa (kgf/cm², psi)] Output Voltage (V) 20.0 (0.20, 2.9) 0.79 46.7 (0.47, 6.77) 1.84 ...

See also:

Specifications
Specifications Item Specification Power source DC 14.4V (-) ground Frequency range FM : 87.5 ~ 107.9 MHz / 200 kHz ...

Troubleshooting
Troubleshooting Problem Symptoms Table Use the table below to help you find the cause of theproblem. The numbers indicate the priority of the likecause of the problem. Check each p ...

Description and Operation
Description The immobilizer system will disable the vehicle unless the proper ignition key is used, in addition to the currently available anti-theft systems such as car alarms, the immobili ...