Hyundai i-30: Parking Brake System / Electric Parking Brake (EPB)
Components and components location
1. Electric parking
brake comtrol module (ESP)
2. EPB switch
|
3. EPB actuator
|
1. ABS Control
Module (HECU)
2. Front Wheel Speed Sensor
3. Rear Wheel Speed Sensor
|
4. ABS Warning
lamp
5. EBD / Parking brake warning lamp
|
Description and operation
The EPB is an electronic parking brake.
The EPB is different from existing parking systems which operated with the brake
pedal or the lever type. The EPB system sends the signal to the ECU when a driver
operates the EPB switch. The ECU operates the EPB actuator composed with motor
gears. The braking power occurs when the motor pulls the cable connected to
the brake system.
The EPB module is one of the parts of EPB system. It monitors the signal of
the various sensors in the system, executes a self diagnosis, controls EPB system
with programmed logic.
Main Function
1. |
Static Braking Mode
It controls the operation and cancellation condition of the vehicle
when stopping
(1) |
The operation condition : Pull the EPB switch regardless of
ignition switch ON / OFF & the brake pedal pressed condition.
(Pull).
– |
The Vehicle speed <= 6kph
|
|
(2) |
The cancellation condition : Push the EPB switch at the ignition
switch on & the brake pedal pressed condition. (Push).
|
|
2. |
Dynamic Braking Function
DBF (Dynamic Braking Function) : The DBF is the braking function during
driving condition, it can operate the EPB system and cancel during vehicle
driving condition. This function will be used while foreign materials
get in between the brake pedal or the brake hydraulic line can not be
operated.
(1) |
The operation condition
It operated only when the vehicle speed is faster than 6kph
and the EPB switch is pushed.
|
(2) |
The cancellation condition : pulling of the EPB switch cancels
condition.
|
(3) |
Principle of Operation
– |
ESC system is normal condition : EPB requests applying
pressure of brake to ESC system.
|
– |
ESC system is abnormal condition : EPB operates the
parking brake for reduction of speed.
|
|
(4) |
Peculiarity
Anti-lock is operated when occurring wheel lock. Parking lamp
on the cluster is flickered in the case of emergency braking.
|
|
3. |
DAR (Drive Away Release)
For the driver’s convenience, the EPB automatically releases when the
driver shifts from P into R/N/D/S with the braked applied.
The EPB automatically releases with the accelerator pedal applied in
D/R/S and the below conditions satisfied.
(1) |
The driver’s side door must be closed and the seat belt must
be on.
|
(2) |
The hood must be closed in D
|
(3) |
The trunk must be closed in R
|
|
4. |
Bedding Mode
You must do "Bedding in process" for optimizing the initial operation
performance of EPB after replacing the parking brake shoe and rear brake
disc.
Bedding in Process
(1) |
Ignition on, start engine.
|
(2) |
Apply the foot brake 2 times within 10 seconds and hold applied
after the last application.
|
(3) |
Apply the EPB switch 4 times, followed by 3 release applications
within 10 seconds.
|
(4) |
The linings must be bedded-in by 6 repeated dynamic braking
procedures from 30-35 km/h to vehicle standstill. (If the vehicle
speed is over 50 km/h at the Bedding Mode, it is automatically
released.)
|
(5) |
After each braking cycle a cooling period for the linings is
necessary to prevent lining damage.
– |
The cooling can either be carried out via driving a
500 m distance after each braking cycle without any
apply of the EPB or via keeping the vehicle in standstill
for 1 minute after each braking.
|
|
|
5. |
Auto Hold
Auto hold helps keep vehicle in a stop condition by applying hydraulic
brake at a stop.
(1) |
Condition for operation
– |
The driver's side door / Hood should be closed.
|
– |
Fastening driver seat belt
|
– |
A gear shift is P-range
|
– |
Perfect stop condition with hitting the brake pedal.
|
|
(2) |
Auto hold function holds stop condition of the vehicle for maximum
10 minutes.
ESC valve keeps stop condition because of intercept the oil
passage with pressure occurred from brake pedal.
|
(3) |
An accumulated time of auto hold operation : Max. 30min
|
(4) |
Automatic release function
Auto hold mode is released when driver starts to accelerate
the vehicle by depressing pedal when in D/ S/ R gear range.
|
(5) |
Automatically convert auto hold to EPB
Auto hold will convert EPB operation automatically if any one
satisfy conditions below.
[Normal conversion case]
– |
In the case of driver door open & Driver seat belt release
at the same time
|
– |
In the case of opening the hood while the shift lever
is D.
|
– |
In the case of over 10 minutes of auto hold operation
time
|
– |
Stop at a slope of twenty five degrees
|
[Abnormal conversion case]
– |
When sensing detailed motion of the vehicle.
|
– |
When sensing the fault of ESC hydraulic system.
|
|
|
Warning Lamp
1. |
EPB warning lamp
EPB warning lamp indicates the EPB cut and malfunction.
EPB warning lamp comes ON below cases.
(1) |
EPB warning lamp comes on for 3 seconds after the ignition switch
is ON. If EPB system is working properly, EPB warning lamp goes
OFF
|
(2) |
If EPB system is not working properly, EPB warning lamp comes
ON
|
(3) |
Under diagnosis mode, EPB warning lamp comes ON
|
|
2. |
AUTO HOLD lamp / AUTO HOLD function lamp
(1) |
AUTO HOLD switch ON
A. |
Brake system operates automatically when vehicle speed
is “0”, in the case of parking or waiting at a red light,
during braking (AUTO HOLD function lamp : Green)
|
B. |
Brake system is released automatically when step on
the accelerator pedal. (AITO HOLD lamp : White)
|
|
(2) |
AUTO HOLD switch OFF : AUTO HOLD function does not operate.
|
|
Schematic diagrams
Pin No
|
Function
|
Pin No
|
Function
|
6
|
EPB switch (SW1)
|
2
|
EPB actuator RH (+)
|
7
|
EPB switch (SW2)
|
3
|
EPB actuator RH (-)
|
8
|
EPB switch (SW3)
|
12
|
EPB actuator LH (-)
|
9
|
EPB switch (SW4)
|
13
|
EPB actuator LH (+)
|
Repair procedures
[EPB Switch]
1. |
Turn ignition switch off and disconnect the battery (-) cable from the
battery.
|
2. |
Remove the floor console upper cover.
(Refer to Body - "Floor Console")
|
3. |
Disconnect the connentor (A).
|
4. |
Install in the reverse order of removal.
|
[EPB Actuator]
1. |
Turn ignition switch off and disconnect the battery (-) cable from the
battery.
|
2. |
Remove the rear wheel and tire.
|
3. |
Remove the rear caliper.
(Refer to Brake System - "Rear Disc Brake")
|
1. |
Check the continuity between the switch terminals as the EPB switch
is engaged.
|
2. |
Check the connector termianal between the switch terminals as the EPB
switch is engaged.
PinNo
|
Function
|
Pin No
|
Function
|
1
|
IGN1
|
9
|
ILL +
|
2
|
NC
|
10
|
NC
|
3
|
EPB Switch 1
|
11
|
EPB Switch 2
|
4
|
EPB Switch 3
|
12
|
EPB Switch 4
|
5
|
NC
|
13
|
NC
|
6
|
Auto hold
|
14
|
NC
|
7
|
NC
|
15
|
NC
|
8
|
NC
|
16
|
ILL -
|
|
Repair procedures
Removal
1.
Disconnect the negative (-) battery cable.
2.
Release the parking brake...
Other information:
Repair procedures
Removal and installation
1.
Remove the drive belt.
(Refer to Timing System - "Drive Belt")
2.
Remove the idler (A).
Tightening torque :
44...
Description
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dims to protect the driver’s eyes when it senses light reflecting from the car
behind. The sensor in the mirror detects the brightness and if the headlight
from the car behind is reflected on the mirror, the chemical layer inside the
mirror reacts to glare and adjusts the reflectivity from 10 to 70%...
Categories
Seat belt warning
Driver’s seat belt warning
■ Instrument cluster
As a reminder to the driver, the seat
belt warning light will illuminate for
approximately 6 seconds each time
you turn the ignition switch ON
regardless of belt fastening.
read more