Hyundai Accent (HC): Engine Electrical System / Cruise Control System
Contents:
Description and Operation
- Cruise Control
The cruise control system is engaged by the cruise "ON/OFF" main switch
located on the right-hand side of steering wheel column. The system has
the capability to cruise, coast, accelerate and resume speed.It also
has a safety interrupt, engaged upon depressing brake or shifting select
lever.The ECM is the control module for this system. The main
components of cruise control system are mode control switches,
transmission range switch, brake switch, vehicle speed sensor, ECM and
ETS motor that connect throttle body. The ECM has a low speed limit that
prevents system engagement below a minimum speed of 40km/h (25mph).The
operation of the controller is controlled by mode control switches
located on steering wheel.Transmission range switch and brake switch are
provided to disengage the cruise control system. The switches are on
brake pedal bracket and transmission. When the brake pedal is depressed
or select lever shifted, the cruise control system is electrically
disengaged and the throttle is returned to the idle position.Cruise Main Switch (ON/OFF)
The cruise control system is engaged by pressing the cruise "ON/OFF"
main switch. Pressing the cruise "ON/OFF" main switch again releases
throttle, clears cruise memory speed, and puts vehicle in a non-cruise
mode.Set / Coast Switch (SET/–)
The "SET/–" switch located on right-hand side of steering wheel column,
has two functions.The set function - Push the "SET/–" switch and release
it at the desired speed. The SET indicator light in the instrument
cluster will illuminate. Release the accelerator pedal. The desired
speed will automatically be maintained.The coast function - Push the
"SET/–" switch and hold it when the cruise control is on. The vehicle
will gradually slow down. Release the switch at the desired speed. The
desired speed will be maintained.Push the "SET/–" switch and release it
quickly. The cruising speed will decrease by 2.0km/h (1.2mph).Resume / Accel Switch (RES/+)
The "RES/+" switch located on right-hand side of steering wheel column,
has two functions.The resume function - If any method other than the
cruise "ON/OFF” main switch was used to cancel cruising speed
temporarily and the system is still activated, the most recent set speed
will automatically resume when the "RES/+" switch is pushed. It will
not resume, however, if the vehicle speed has dropped below
approximately 40km/h (25mph).The accel function - Push the "RES/+"
switch and hold it when the cruise control is on. The vehicle will
gradually accelerate. Release the switch at the desired speed. The
desired speed will be maintained.Push the "RES/+" switch and release it
quickly. The cruising speed will increase by 2.0km/h (1.2mph).Cancel Switch (CANCEL)
The cruise control system is temporarily disengaged by pushing the
"CANCEL" switch.Cruise speed canceled by this switch can be recovered by
pushing the "RES/+" switch.
Schematic Diagrams
- System Block Diagram
Component Parts and Function Outline
| Component part | Function |
| Vehicle-speed sensor, ESP/ABS Control Module | Converts vehicle speed to pulse. |
| ECM | Receives signals from sensor and control switches. |
| Cruise control indicator | Illuminate when CRUISE main switch is ON (Built into cluster) |
| Cruise Control switches | CRUISE switch | Switch for automatic speed control power supply. |
| RES+ switch | Controls automatic speed control functions by Resume/Accel switch (Set/Coast switch) |
| SET- switch |
| Cancel switches | Cancel switch | Sends cancel signals to ECM. |
| Brake-pedal switch |
| Transaxle range switch (A/T) |
| ETC motor | Regulates the throttle valve to the set opening by ECM. |
* ETC Motor : Electronic Throttle Control Motor
Cruise Control Switch
- Components
1. Remote control switch (LH)
2. Remote control switch (RH)
- Circuit Diagram
- Removal
1.Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.Remove the steering wheel assembly.
3.Remove the screws from the steering back cover (A).
4. Remove the steering remote control connector (A).
5.Remove the steering remote control (A) after loosening the screws.
- Installation
1. Install in the reverse order of removal.
- Inspection
1.Install the steering wheel remote controll and cover after connecting the connector.
2. Install the steering wheel and driver airbag module.
3.Connect the negative (-) battery terminal.
4.Measure the resistance between terminals on the control switch when each function switch is ON (and switch is depressed).
| Switch | Connector terminal | Resistance
(± 5%) |
| CANCEL | 2 - 5 | 390 Ω |
| SET (-) | 2 - 5 | 610 Ω |
| RES (+) | 2 - 5 | 910 Ω |
| CRUISE | 2 - 5 | 1.38 kΩ |
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: ETC (Electronic Throttle control) System
- Description
The Electronic Throttle Control (ETC) System consists of a throttle
body with an integrated control motor and throttle position sensor
(TPS). Instead of the traditional throttle cable, an Accelerator
Position Sensor (APS) is used to receive driver input. The ECM uses the
APS signal to calculate the target throttle angle; the position of the
throttle is then adjusted via ECM control of the ETC motor.
Hyundai Accent (HC) (2017 - 2022) Service Manual: Injector
- Description
A DPI (Dual Point Injection) system means a system with two injectors
in one cylinder (intake port) and has a total of eight injectors.The
injector is an electronically controlled fuel injector, a solenoid valve
that supplies precisely calculated fuel to the engine in spray form for
the optimal combustion. This helps satisfy various engine operating
conditions.
