1.STEP 1The ESP analyzes the intention of the driver.
2.STEP 2It analyzes the movement of the ESP vehicle.
3.STEP 3The HECU calculates the required strategy, then actuates the appropriate valves and sents torque control requests via CAN to maintain vehicle stability.
1.ESP Non-operation-Normal braking.
Inlet valve (IV) | Outlet valve (OV) | Traction Control Valve (TCV) | High pressure switch valve (HSV) | Return pump | |
Normal braking | Open | Close | Open | Close | OFF |
• IV : Inlet Valve
• OV : Outlet Valve
• RL : Rear left wheel
• FR : Front right wheel
• FL : Front left wheel
• RR : Rear right wheel
• RP : Return pump
• TCV : Traction Control Valve
• HSV : High pressure Switch Valve
2.ESP Increase Mode
Inlet valve (IV) | Outlet valve (OV) | Traction Control Valve (TCV) | High pressure switch valve (HSV) | Return pump | |
Normal braking | Open | Close | Close (Partial) | Open | ON (Motor speed control) |
• IV : Inlet Valve
• OV : Outlet Valve
• RL : Rear left wheel
• FR : Front right wheel
• FL : Front left wheel
• RR : Rear right wheel
• RP : Return pump
• TCV : Traction Control Valve
• HSV : High pressure Switch Valve
3.ESP Hold Mode (FR is only controlled.)
Inlet valve (IV) | Outlet valve (OV) | Traction Control Valve (TCV) | High pressure switch valve (HSV) | Return pump | |
Normal braking | Close | Close | Close (Partial) | Open | OFF |
• IV : Inlet Valve
• OV : Outlet Valve
• RL : Rear left wheel
• FR : Front right wheel
• FL : Front left wheel
• RR : Rear right wheel
• RP : Return pump
• TCV : Traction Control Valve
• HSV : High pressure Switch Valve
4.ESP Decrease Mode (FR is only controlled)
Inlet valve (IV) | Outlet valve (OV) | Traction Control Valve (TCV) | High pressure switch valve (HSV) | Return pump | |
Normal braking | Close | Open | Close (Partial) | Open | ON (Motor speed low control) |
• IV : Inlet Valve
• OV : Outlet Valve
• RL : Rear left wheel
• FR : Front right wheel
• FL : Front left wheel
• RR : Rear right wheel
• RP : Return pump
• TCV : Traction Control Valve
• HSV : High pressure Switch Valve
– During the initialization phase after IGN ON. (continuously 3 seconds).
– In the event of inhibition of ESP functions by failure.
– During diagnostic mode.
– When the ECU Connector is separated from ECU.
– During the initialization phase after IGN ON. (continuously 3 seconds).
– When the Parking Brake Switch is ON or brake fluid level is low.
– When the EBD function is out of order .
– During diagnostic mode.
– When the ECU Connector is separated from ECU.
– During the initialization phase after IGN ON. (continuously 3 seconds).
– In the event of inhibition of ESP functions by failure.
– During dignostic mode.
– When the ESP control is operating. (Blinking - 2Hz)
– During the initialization phase after IGN ON. (continuously 3 seconds).
– When driver turn off the ESP function by on/off switch.
Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Specification Air Conditioner itemSpecification CompressorType6VSe12 Oil type & CapacityFD46XG (IDEMITSU) 110 ± 10cc (3.72 ± 0.34oz.) Displacement126 cc / rev Pulley type6PK - TYPE Expansion valveTypeBlock type RefrigerantTypeR - 1234yf Capacity480 ± 25 g (16.9 ± 0.88 oz.) Blower Unit ItemSpecification Fresh and recirculationOperating methodActuator BlowerTypeSirocco pan Speed stepAuto + 8 speed (Automatic), 7 speed (Manual) Speed controlPWM (Automatic, Manual) Air filterTypeParticle filter Heater and Evaporator Unit ItemSpecification HeaterTypeFin & Tube type TypeTube - Fin 1Way Mode operating methodCable, Actuator Temperature operating methodCable, Actuator EvaporatorTemperature control typeEvaporator temperature sensor Blower singularA/C Output OFF TemperatureA/C Output ON Temperature Manual control1 - 3 speed1.Hyundai Accent (HC) (2017 - 2022) Service Manual: Repair procedures
- Removal 1.Remove the air cleaner assembly.(Refer to Engine Mechanical System - "Air cleaner") 2.Remove the battery and battery tray.(Refer to Body Electrical System - "Battery") 3.Drain the coolant.(Refer to Engine Mechanical System - "Coolant") 4.Disconnect the position switch connector (A). 5.Disconnect the driven pully speed sensor connector (B).