Hyundai Santa Fe: 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.

Repair procedures

Inspection Throttle Position Sensor (TPS) 1. Connect the diagnostic tool on the Data Link Connector (DLC). 2...

Manifold Absolute Pressure Sensor (MAPS). Specifications

Specification Pressure (kPa) Output Voltage (V) 20.0 0.79 46.7 1...

Other information:

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: LCD display message (button type)

Shifting conditions not met. Reduce speed, then shift The warning message appears on the LCD display, when engine RPM is too high, or when driving speed is too fast to shift the gear. We recommend you decrease the engine speed or slow down before shifting the gear...

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: Brake fluid

Checking the brake fluid level Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the reservoir cap and adding brake fluid, clean the area around the reservoir cap thoroughly to prevent brake fluid contamination...