Hyundai Ioniq: Manifold Absolute Pressure Sensor (MAPS) / Description and operation

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Manifold Absolute Pressure Sensor (MAPS) / Description and operation

Description

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.

Manifold Absolute Pressure Sensor (MAPS)

Specifications

Specification Pressure [kPa (kgf/cm², psi)] Output Voltage (V) 20...

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1. TCM Connector and Terminal Function2. TCM Terminal FunctionConnector [A] Pin Description Pin Description 1Clutch Actuator (Clutch Motor 1 (ODD)_Phase V)17-2Clutch actuator (Clutch Motor 2 (EVEN) Phase V)18Clutch Actuator (Clutch Motor 1 (ODD)_HALL 1)3Select Actuator (Select Solenoid 2 (EVEN)_Ground)19Clutch Actuator (Clutch Motor 1 (ODD)_Sensor Supply)4Select Actuator (Select Solenoid 1 (ODD) Push)20Select Actuator (Select Solenoid 1 (ODD)_Sensor Sensor Supply)5Clutch Actuator (Clutch Motor 1 (ODD)_Phase U)21Select Actuator (Select Solenoid 2 (EVEN)_Sensor Sensor Supply)6Clutch Actuator (Clutch Motor 2 (EVEN)_Phase U)22Select Actuator (Select Solenoid 2 (EVEN)_Sensor Ouput)7Select Actuator (Select Solenoid 1 (ODD)_Ground)23Clutch Actuator (Clutch Motor 2 (EVEN)_HALL 2)8Select Actuator (Select Solenoid 2 (EVEN)_ Pull)24Clutch Actuator (Clutch Motor 2 (EVEN)_HALL 3)9Clutch Actuator (Clutch Motor1 (ODD)_Phase W)25Clutch Actuator (Clutch Motor 2 (EVEN)_Ground)10Clutch Actuator (Clutch Motor 2 (EVEN)_Phase W)26Select Actuator (Select Solenoid 1 (ODD)_Sensor Output)11Select Actuator (Select Solenoid 1 (ODD) Pull)27-12Select Actuator (Select Solenoid 2 (EVEN) Push)28Clutch Actuator (Clutch Motor 2 (EVEN)_HALL 1)13Clutch Actuator (Clutch Motor 1 (ODD)_HALL 2)29Clutch Actuator (Clutch Motor 2 (EVEN)_Sensor Supply)14Clutch Actuator (Clutch Motor (ODD)_HALL 3)30Select Actuator (Select Solenoid 1 (ODD)_Sensor Ground)15Clutch Actuator (Clutch Motor 1 (ODD)_Ground)31Select Actuator (Select Solenoid 2 (EVEN)_Sensor Ground)16-32-Connector [B] Pin Description Pin Description 1-35-2-36-3ON / START Input37-4Paddle Shift (Up) Switch signal38-5Inhibitor Switch "P" Input signal39-6Inhibitor Switch "R" Input signal40-7Inhibitor Switch "D" Input signal41Shift Actuator (Shift Motor 2 (EVEN) _HALL 2)8Sports mode "Down" shift42Shift Actuator (Shift Motor 2 (EVEN) _HALL 3)9Clutch Speed Sensor (EVEN) Ground43Inhibitor Switch "M" Input signal10-44CAN1 Communication Port1 High11-45CAN1 Communication Port1 Low12-46-13Shift Actuator (Shift Motor 1 (ODD) _HALL 2)47-14Shift Actuator (Shift Motor 1 (ODD) _HALL 3)48Flex ray High (BP)15-49Input Speed Sensor Supply 1 (ODD)16-50Input Speed Signal 1 (ODD)17Battery Power Low VBD 51-18Paddle Shift Down signal52-19Shift Lever Select Switch53-20Inhibitor Switch "N" Input signal54Shift Actuator (Shift Motor 2 (EVEN) _Sensor Supply)21Sports mode "Up" shift55Shift Actuator (Shift Motor 2 (EVEN) _HALL 1)22-56Shift Actuator (Shift Motor 2 (EVEN) _Sensor Ground)23Input Speed Sensor Supply 2 (EVEN)57Power Ground 1 for High Current Modules245V spare Sensor Supply output58Power Ground 2 for High Current Modules25-59Shift Actuator (Shift Motor 2 (EVEN)_Phase W)26Shift Actuator (Shift Motor 1 (Odd)_Sensor Supply)60Shift Actuator (Shift Motor 1 (ODD)_Phase W)27Shift Actuator (Shift Motor 1 (ODD)_HALL 1)61 Power Ground 3 for High Current Modules28Select Actuator (Shift Motor 1 (ODD)_Sensor Ground)62-29-63Shift Actuator (Shift Motor 2 (EVEN)_Phase V)30CAN2 Communication Port2 High64Shift Actuator (Shift Motor 1 (ODD)_Phase V)31CAN2 Communication Port2 Low65Motor Sensor Supply Voltage 1 from Direct Battery32-66Motor Sensor Supply Voltage 2 from Direct Battery33-67Shift Actuator (Shift Motor 2 (EVEN)_Phase U)34Flex ray bus, BM68Shift Actuator (Shift Motor 1 (ODD)_Phase U)3...