Hyundai Accent: 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.

Adjustment

ETC module learning procedure When installing new ETC module or re-installing it, ETC module learning procedure must be performed. 1. Hold the ignition k ...

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:

Inspection
1. Turn ignition switch OFF. 2. Disconnect the oil temperature sensor connector. 3. Measure resistance between ...

Changing tires
1. Park on a level surface and apply the parking brake firmly. 2. Shift the shift lever into R (Reverse) with manual transaxle or P (Park) with automatic transaxle. 3. Activate the hazard warnin ...

Tire pressure monitoring system (TPMS)
(1) Low tire pressure telltale / TPMS malfunction indicator Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by ...