Hyundai Accent: Advanced Driver Assistance System (ADAS) / Parking Distance Warning (PDW)
Specifications
| Item | Specification | |
| Ultrasonic sensor | Voltage rating | DC 12 V |
| Detecting range | 30 cm - 120 cm | |
| Operation voltage | DC 9 - 16 V | |
| Operation current | MAX 350 mA | |
| Operation temperature | -30°C to +80°C | |
| Operation frequency | 48 ± 5 KHz | |
| Number of sensors | 4 (Left side, Left center, Right center, Right side) | |
Parking distance warning (PDW) control unit function is built in BCM (Body control unit).
Components and Components Location
1. Body control unit (BCM)
2. Parking distance warning sensor
Description and Operation
• PDW consists of 8 sensors (front : 4 units, rear : 4 units) that are used to detect obstacles and transmit the result in three separate warning levels, the first, second and third to IBU via LIN communication.
• IBU decides the alarm level by the transmitted communication message from the slave sensors, then operates the buzzer or transmits the data for display.
Initial mode
1.System initializing time
– PDW-R : 500ms after IGN1+ initial R Gear
2.PDW recognizes LID and sets the sensor ID up during initialization.
3.PDW activates each sensor and then executes the diagnosis after finishing initialization of BCM.
4.PDW starting buzzer is normally worked, when sensor does not send an error message and after finishing error diagnosis.
5.If any failure is received from the any sensors, PDW starting buzzer does not work but the failure alarm is operated for a moment.If you have display option, warning sign is also shown on it.
6.IBU memorizes the completed initializing status of sensor.
Normal mode
1.PDW-F : Lin communication starts and keeps the routine after IGN1 ON+D gear + below 10 km/h. PDW-R : Lin communication starts and keeps the routine after IGN1 ON+R gear
2.After initializing, the routine starts at once without PDW starting warning sound.
3.Alarms of obstacle consists of 3 level 1,2,3 step and 1,2 alarm sounds intermittently and 3 alarm sounds continuously. 1 level alarm doesn't exist in the front ultrasonic sensor.
4.In display, the data of each sensor is sent from IBU to display, for example cluster. CAN communication is used for transmission and maximum gateway time is 50ms.
5.The efficient vehicle speed of PDW operation is under 10Km/h.
6.Operation doesn't start or stops at gear N, P.
| Level | Distance range | Allowed range |
| 1 | Rear : 61 - 120 cm (24.02 - 47.2 in.) | ± 15 cm (5.90 in.) |
| 2 | 31 - 60 cm (12.20 - 23.62 in.) | ± 15 cm (5.90 in.) |
| 3 | 0 - 30 cm (0 - 11.81 in) | ± 10 cm (3.94 in.) |
*Measurement condition : PVC pipe - Diameter 75 mm (0.0394 in.), length 1 m (39.37 in.), at normal temperature
Parking Distance Warning (PDW) Sensor
1.Remove the bumper cover.(Refer to Body - "Front Bumper Cover")(Refer to Body - "Rear Bumper Cover")
2.Disconnect the connector (A) from the PDW sensor (B).
1.Install the PDW sensor.
2.Install the bumper cover.
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Schematic Diagrams
- Schematic Diagrams - Terminal Function Wire NoDesignationCurrent MaxMin 13Ground for recirculation pump39A10A 1Voltage supply for pump motor39A10A 25Voltage supply for solenoid valves15A2A 38Ground for solenoid valves andECU15A2A 22Signal wheel speed sensor (FL)16.8 mA5.9 mA 33Voltage supply for the active wheel speed sensor (RL)16.Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Specification EngineTransaxleJoint type Max. permissible angle OuterInnerOuterInner GAMMA 1.6AT / MTBJ#22TJi#2246.5°23° - Tightening torque Item N.mkgf.mlb-ft FrontHub nuts107.9 - 127.511.0 - 13.079.6 - 94.0 Driveshaft caulking nut274.6 - 294.228.0 - 30.0202.5 - 217.0 Strut assembly to knuckle98.1 - 117.710.0 - 12.072.3 - 86.8 Front caliper to knuckle78.
Contents
- Specifications
- Components and Components Location
- Description and Operation
- Parking Distance Warning (PDW) Sensor
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