Hyundai Ioniq (AE): Fuel Delivery System / Fuel Pump Control Module (FPCM). Description and operation
| Description |
| Operation |
| 1. | The ECM provides target fuel pressure information to the FPCM via CAN network. |
| 2. | The FPS provides the FPCM with actual pressure information of the low pressure fuel line between the low and high pressure fuel pumps, and the FPCM forwards the information to the ECM.Also, the FPCM diagnoses faults in the FPCM, fuel pump motor and FPS and then provides the diagnosis information to the ECM. |
| 3. | The FPCM compares the actual fuel pressure information measured by the FPS with the target fuel pressure information provided by the ECM and controls the voltage that is provided to the low pressure fuel pump motor.The FPCM keeps regulating fuel flow rate by controlling the low pressure fuel pump, depending on engine speed (rpm) and vehicle loads. |
Removal 1.Turn the ignition seitch OFF and disconnect the battery negative (-) cable. 2.Disconnect the accelerator position snesor connector (A).3.Remove the installation nut (A), and then remove the accelerator pedal module.
Circuit DiagramFuel Pressure Control Module (FPCM) Terminal And Input/Output signalFPCM Terminal Function Pin No Discription Connected to 1Fuel sender groundFuel Pump2Fuel pressure sensor (FPS) signal inputFuel Pressure Sensor (FPS)3Fuel pressure sensor (FPS) ground (-)Fuel Pressure Sensor (FPS)4GroundChassis Ground5CAN [Low]ECM6Fuel sender signalFuel Pump7--8Fuel pressure sensor (FPS) Power supply (+5V)Fuel Pressure Sensor (FPS)9CAN [High]ECM10Battery power (B+)Fuel Pump Relay
Other information:
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Ambient Temperature Sensor. Repair procedures
Inspection1.Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.1. Ambient Sensor (+)2. Sensor groundSpecification Ambient temperature [°C (°F)] Resistance between terminal 1 and 2 (
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Front Radar Unit. Description and operation
DescriptionThe smart cruise control unit is installed on the front right side of the chassis. A radar sensor is embedded in the front section of the unit. This sensor detects vehicles and objects in front of the vehicle. The radar sensor can detect up to 64 objects ahead of a vehicle.
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