Kia Forte: Description
System Overview
The System offers the following features:
| - |
Human machine interface through a 1-stage button, for terminal
switching and engine start.
|
| - |
Control of external relays for ACC / IGN1 / IGN2 terminal switching
and STARTER, without use of mechanical ignition switch.
|
| - |
Steering column locking with an ESCL device; Monitoring of the
vehicle status to insure safe activation of the ESCL.
|
| - |
Indication of vehicle status through LCD or explicit messages
on display.
|
| - |
Immobilizer function by LF transponder communication between fob
and start/stop button.
|
| - |
Redundant architecture for high system dependability .
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| - |
Interface with Low Speed CAN vehicle communication network.
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| - |
Interface with LIN vehicle communication network depending on
platform .
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The RKE and SMART KEY functions are not considered part of this Button
Engine Start system and are specified in separated system.
System Main Function
| - |
Steering column locking/unlocking with ESCL.
|
| - |
Switching of ACC / IGN1 / IGN2 terminals.
|
| - |
Control of the STARTER relay BAT line (high side) based on communication
with EMS ECU.
|
| - |
Management of the Immobilizer function.
|
| - |
Management of BES warning function.
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Button Engine Start System
The Button Start System allows the driver to operate the vehicle by simply
pressing a button (called as SSB) instead of using a standard mechanical key.
If the driver press the SSB while prerequisites on brakes, fob authentication
and transmission status are satisfied, the BES System will proceed with the
locking/unlocking of the steering column, the control of the terminal, and the
cranking of the engine.
The driver can release the SSB as soon as this sequence initiated. After
positive response from immobilizer interrogation, the system will activate the
starter motor and communicate with the EMS to check the engine running status
for starter release.
The driver will be able to stop the engine by a short push on the SSB
if the vehicle is already in standstill. Emergency engine stop will be possible
by a long press of the SSB or 3 consecutive presses in case the vehicle is in
ENGINE RUNNING.
If the conditions for engine cranking are not satisfied while a push on
the SSB is detected and a valid fob authenticated, the system will unlock the
steering column and switch the terminals to IGN. Another push on the SSB will
be necessary to start the engine.
In case of a vehicle equipped with SMART KEY system, fob authentication
will not require any action from the driver. For limp home start or in case
of vehicle without SMART KEY, the driver will have to push the start / stop
button.
| • |
Control Ignition and engine ON/OFF by Sending signal to IPM.
|
| • |
Display status by LED Lamp ON/OFF. (Amber or Blue)
|
Indicator ON/OFF Condition At Ignition Key Off Condition
| No. |
Character lamp |
Conditions |
| 1 |
Indicator Lamp ON |
Door open, Tail lamp ON, ACC, IG ON |
| 2 |
Indicator Lamp 30sec ON → Lamp OFF |
Door close, Tail lamp OFF, IG OFF |
| 3 |
Indicator Lamp OFF |
Remote LOCK, Passive LOCK |
| 4 |
Rheostat at tail lamp ON (Illumination lamp) |
|
Indicator ON/OFF Condition According To Ignition Key's Position
| No. |
Ignition conditions |
Start Button LED status |
| 1 |
IG OFF |
LED OFF |
| 2 |
IG ACC |
Amber color LED ON |
| 3 |
IG ON (Engine OFF) |
Blue color LED ON |
| 4 |
Cranking |
Maintain LED status before cranking |
| 5 |
Engine running |
LED OFF |
Wireless Communication
Electromagnetic waves are used to exchange information between the vehicle
and the FOB. Two types of RKE Key can supplement the BES system:
| - |
Non-smart key RKE
|
| - |
SMART KEY FOB
|
Currently the BES system comprises with SMART KEY FOB always.
The transmitter, receiver and antennas required for the communication
between the fob and the vehicle will differ depending on functionalities and
regional areas.
The RKE and SMART KEY functions are in separated documents. Refer to Smart
key system for more detailed information about SMART KEY function.
Smart Key
The SMK manages all function related to:
| • |
"Start Stop Button (SSB) monitoring",
|
| • |
"Immobilizer communication" (with Engine Management System unit
for immobilizer release),
|
| • |
"Authentication server" (Validity of Transponder and in case of
Smart Key option Passive Fob authentication ),
|
| • |
"System consistency monitoring",
|
| • |
"System diagnosis",
|
| • |
Control of display message / warning buzzer .
|
The unit behaves as Master role in the whole system.
In case of SMART KEY application, for example “Passive Access”, “Passive
Locking” and “Passive Authorization are integrated for ESCL/Terminal switching
Operations”.
It collects information about vehicle status from other modules (vehicle
speed, alarm status, driver door open...), read the inputs (e.g. SSB, Lock Button
and PARK position Switch), controls the outputs (e.g. exterior and interior
antennas), and communicates with others devices via the CAN network as well
as a single line interfaces.
The diagnosis and learning of the components of the BES System are also
handled by the SMK.
Transponder
Terminal And Starter Relays
Relays will be used to switch the terminals ACC / IGN1 / IGN2. Those normally-open
relays will be driven by the SMK unit and located either in the passenger or
engine compartment depending on the vehicle architecture.
Only one relay coil is connected to the terminal outputs of the SMK unit.
Those relays should integrate a resistor connected in parallel to the
coil in order to reduce the transients during commutation.
Start/Stop Button(SSB)
A single stage push button is used for the driver to operate the vehicle.
Pressing this button allows:
| • |
To activate the power modes ‘Off’, ’Accessory’, ‘Ignition’ and
'Start' by switching the corresponding terminals
|
| • |
To start the engine
|
| • |
To stop the engine
|
The contact will be insured by a micro-switch and a backlighting is provided
to highlight the marking of the button whenever necessary.
Two (2) LED colors are located in the center of the button to display
of the status of the system. Another illumination LED is also integrated into
the SSB for the lighting of the "Engine Start/Stop" characters.
BES System State Chart
System STATES in LEARNT MODE
In learnt mode, the BES System can be set in 6 different sates, depending
on the status of the terminals, ESCL and Engine status:
| System State |
Terminal Status |
ESCL Status |
Engine status |
| 1. OFF - Locked |
OFF |
Locked |
Stopped |
| 2. OFF - Unlocked |
OFF |
Unlocked |
Stopped |
| 3. ACC |
ACC |
Unlocked |
Stopped |
| 4. IGN |
IGN1, IGN2, ACC |
Unlocked |
Stopped |
| 5. Start |
IGN1, Start |
Unlocked |
Cranking |
| 6. IGN - Engine |
IGN1, IGN2, ACC |
Unlocked |
Running (means "self-running") |
Referring to the terminals, the system states described in the table above
are same as those one found in a system based on a mechanical ignition switch.
The one of distinction with Mechanical-Ignition-Switch based system is that
the BES system allows specific transition from [OFF] to [START] without going
through [ACC] and [IGN] states.
System STATES IN VIRGIN MODE
The BES System can be set in 5 different states (OFF LOCKED is not available
in virgin mode), depending on the status of the terminals, ESCL and Engine status:
| System State |
Terminal Status |
ESCL Status |
Engine status |
| 1. OFF - UNLOCKED |
OFF |
Unlocked |
Stopped |
| 2. ACC |
ACC |
Unlocked |
Stopped |
| 3. IGN |
IGN1, IGN2, ACC |
Unlocked |
Stopped |
| 4. Start |
IGN1, START with special pattern of activation
see Chap 6.2.1 for details |
Unlocked |
Cranking |
| 5. IGN - Engine |
IGN1, IGN2, ACC |
Unlocked |
Running (means "self-running") |
Referring to the terminals, the system states described in the table above
are same as those one found in a system based on a mechanical ignition switch.
The one of distinction with Mechanical-Ignition-Switch based system is that
the BES system allows specific transition from [OFF] to [START] without going
through [ACC] and [IGN] states.
Circuit Diagram
...
See also:
Intake Actuator Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box housing.
(Refer to Body -"Glove Box Housing")
...
Front Strut Assembly Inspection
1.
Check the strut bearing for wear and damage.
2.
Check the spring upper and lower seat for damage and deterioration.
3.
...
Specifications
Description
Specifications
Limit
General
Type
In-line, DOHC
Number of cylinders
4
...
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