Copyright by Hyundai Motor Company. All rights reserved. EPB

2 Introduction EPB EPB Switch EPB Control module & Actuator System layout Pulling force Signal input to control module EPB : Electronic Parking Brake

3 Introduction EPB Benefits of EPB EPBMechanical type Neither lever nor foot pedal is required. More space and higher degree of design for passenger compartment cabin. Automatic release upon starting with parking brake engaged. Lever or pedal is required. Design layout is restricted due to the lever or pedal. Not released but warning (some model only) upon starting with parking brake engaged.

4 Components EPB Control module & Actuator Emergency release cable Control cable (RH) EPB control module Control cable (LH) Gear box Force sensor Driving motor Connector socket Plastic gear EPB

5 Components EPB EPB switch EPB Switch SW_1SW_5SW_4SW_2 EPB control module EPB switch TerminalPushPull 2~43.91 K ± 3%1.3 K ± 3% 3~50.9 K ± 3%3.98 K ± 3%

6 Main functions EPB EPB CM Switch (Driver side) Wiring Static Braking Mode Dynamic Brake Function (DBF) Brake ON : EPB switch ON & Vehicle stop Brake OFF: EPB switch OFF & IG ON & Foot brake ON While driving, push EPB switch and Hold it without foot brake. Push (Brake ON) Pull (Brake OFF)

7 Main functions EPB Drive Away Release (DAR) Engine Off Apply Sensor cluster: Variant 1: Yaw rate + Lateral G + Longitudinal G (with EPB) Variant 2: Yaw rate + Lateral G (without EPB) EPB is released automatically as gas pedal is depressed. Gas pedal DAR function EPB is released considering to avoid retraction at uphill starting. EPB is engaged automatically whenever IG OFF.

8 Main functions EPB Automatic Vehicle Hold (AVH) AVH Switch (1)Engine running ? (2)Shift lever position ? (3)Vehicle is moving ? (4)AVH switch ? (5)What about trunk ? (6)And hood ? (7)Are you staying in the cabin ? (Door & Seat belt) Operating condition ESC HECM TCS solenoid valve (normal open) Hydraulic pressure is trapped by TCS valve during AVH operation. EPB Switch Go mode AUTO HOLD AUTO HOLD AVH activeAccel. pedal onAVH stand by

9 AVH EPB EPB Conditions AVH Timer : 5 min, 30 min AUTO HOLD 5 min. AUTO HOLD X min. … AUTO HOLD … AUTO HOLD Y min.Z min. 30 min. (1)Engine off OR (2)Trunk open OR (3)Hood open OR (4)Driver out of vehicle OR (5)Timer out (5min, 30min) OR (6)Vehicle stops at uphill (more than 23%) AUTO HOLD AUTO HOLD

10 Driver-In -Vehicle Driver-In -Vehicle Driver-Out- Of-Vehicle Driver-Out- Of-Vehicle Seat belt Release AND Door Open (Seat belt fasten AND Door close) OR (Door close AND Foot brake ON) EPB Driver In & Driver Out AUTO HOLD AVH OFF (No foot brake)

11 Main functions EPB Emergency Release & Latching Run Emergency release cable OVM Tool Box Emergency releasing tool Install the tool on the cable and pull until it sounds. Hole for emergency release (Inside trunk) Hook & claw

12 Main functions EPB Safety Clutch Bedding Mode Gear box & Safety clutch Improper cable installation may result in problem of the system. Whenever the parking brake shoe is replaced with new one, bedding is required. New shoe must be bedded

13 Interface EPB Private CAN Power train CAN Hardwire Brake Cable Brake Pipe AVH switch EPB switch Stop lamp relay AUTO HOLD AUTO HOLD AUTO HOLD EPB ESC EPB Stop lamp Sensor cluster Longitudinal G sensor Cluster Engine ECM ECSTCMSAS ( ! )( P ) BRAKE EHPS Brake pipe AFLS

14 ItemsLamp statusRemarks AVH stand by (AVH SW ON) White color AVH active Green color While DBF (by ESC) Frequency: 1Hz AVH failure AVH system failure While DBF (by EPB) In case of ESC failure EPB ClampEBD active or Insufficient brake fluid EPB failure EPB failure, Self-test in every IG ON (3sec) While communication with scanner After ERC released EPB lamp blinks and the text massage appears until the EPB switch is pressed. Blink AUTO HOLD AUTO HOLD AUTO HOLD Blink EPB Blink + TEXT Lamp control EPB

15 Type 1: AUTO HOLD CONDITION NOT MET. SEE OWNER'S MANUAL Type 2: AUTO RELEASE CONDITION NOT MET. SEE OWNER'S MANUAL. Type 3: AUTO HOLD FUNTION IS UNAVAILABLE. Type 4: EPB FUNTION IS UNAVAILABLE. APPLY BRAKE PEDAL. EPB Text messages

16 Joint BATTERY E EPB Joint Box Engine Room Junction Box Fuse EPB operates at all times regardless of ignition position. EPB Power supply IGN: 10A Power (Hot at all time): Two fuses 15A (EPB-1, EPB-2)

17 Diagnosis EPB