Hyundai Ioniq (AE): Hybrid Motor Cooling System / Electric Water Pump(EWP). Description and operation
| Description |
| • | Function : It circulates the coolant for the hybrid system (HPCU, drive motor, and HSG). |
| • | Operating Principles: When the coolant temperature exceeds the limit set in the MCU in the hybrid system, the motor control unit (MCU) sends a command to the electric water pump (EWP) through the CAN communication to operate the EWP. EWP then sends its operation status to MCU through the CAN communication.
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Specifications Cooling system CoolantSpecified coolant LLC - 10 Quantity Approx. 3.2L (0.85 US gal, 3.38 US qt, 2.82 lmp qt.)
Component location1. HPCU (Hybrid Power Control Unit)(LDC+MCU+HCU+Reservoir)2. Hybrid drive motor3. Hybrid starter generator (HSG)4. Electrical radiator5.
Other information:
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: A/C Pressure Transducer. Description and operation
DescriptionThe A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed. Engine ECU stops the operation of the compressor when the temperature of refrigerant line is very high or very
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Photo Sensor. Repair procedures
Inspection1.Turn the ignition switch ON.2.Connect the GDS.3.Emit intensive light toward the photo sensor using a lamp, and check the output voltage change.4.The voltage will rise with higher intensive light and reduce with lower intensive light.1. Auto light signal2.
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