– Input of signal from the wheel speed sensors attached to each wheel.
– Control of braking force.
– Failsafe function.
– Self diagnosis function.
– Interface with the external diagnosis tester.
– Brake tube length from Master cylinder port to HECU inlet port should be max. 1m
– The position should not be close to the engine block and not lower than the wheel.
– OvervoltageWhen overvoltage is detected(above 16.8 V), the ECU switches off the valve relay and shuts down the system.When voltage is returned to operating range, the system goes back to the normal condition after the initialization phase.
– UndervoltageIn the event of undervoltage(below 9.3 V), ABS control shall be inhibited and the warning lamp shall be turned on.When voltage is returned to operating range, the warning lamp is switched off and ECU returns to normal operating mode.
1.ABS Warning LampThe active ABS warning lamp indicates the selftest and failure status of the ABS. The ABS warning lamp shall be on :
– During the initialization phase after IGN ON. (continuously 3 seconds).
– In the event of inhibition of ABS functions by failure.
– During diagnostic mode.
– When the ECU Connector is separated from ECU.
2.EBD/Parking brake Warning LampThe active EBD warning lamp indicates the selftest and failure status of the EBD. However, in case the Parking Brake Switch is turned on, the EBD warning lamp is always turned on regardless of EBD functions.The EBD warning lamp shall be on:
– 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.
1.Normal Braking without ABS
Inlet valve (IV) | Outlet valve (OV) | Return pump | |
Operation | 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
2.Decrease Mode
Inlet valve (IV) | Outlet valve (OV) | Return pump | |
Operation | Close | 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
3.Hold Mode
Inlet valve (IV) | Outlet valve (OV) | Return pump | |
Operation | Close | Close | 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
4.Increase Mode
Inlet valve (IV) | Outlet valve (OV) | Return pump | |
Operation | Open | Close | 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
Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Service data ItemSpecification Transmission typeSmartstream IVT Engine typeGasoline 1.6 MPI Clutch typeTorque converter Torque converter sizeØ 210mm(8.2677in.) Oil pump typeChain drive vane pump Planetary gearDouble pinion planetary gear Gear ratioForward2.68 - 0.385 Reverse2.822 - 1.822 Final gear ratio4.892 Component elementsOil pump1 unit Oil filterMain filter : 1 unit pressure filter : 1 unit Clutch1 unit Brake1 unit Planetary gear1 unit Drive pulley1 unit Driven Pulley1 unit Chain belt1 unit Solenoid valveDirect Control VFS : 1 units Indirect Control VFS : 4 units *IVT : Intelligent Variable Transmission *IVTF : Intelligent Variable Transmission Fluid*VFS : Variable Force SolenoidPosition Switch ItemSpecification Power supply (V)4.Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Specifications ItemsBulb TypeBulb Wattage (W) FrontHead lampGeneral (Low/High)H455 / 60 Option (Low/High) Bi-function9005 HL+60 Turn signal lamp PY21W21 Position lamp W5W5 Fog lamp H835 Static bending light (SBL) H755 Type B (Daytime Running Lamp - DRL) LEDLED RearRear combination lmap(General)Turn signal lampPY21W21 Stop / Tail lampP21/ 5W21/ 5 Tail lamp W5W5 Back up lampW16W16 Rear combination lmap(Option)Inside Tail/stop lampLEDLED Out side Tail/stop lampLEDLED Turn signal l