Geely EC718, EC718RV, EC715, EC715RV. Manual part — 441
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 441
FE11-2015b
When the engine is turned off, the primary LCD shows trip
meter by default, and the model can not be switched. When the
ignition is turned on again, the primary LCD display is in the
previous mode.
Body Electric
Instrument / Driver Information System
11-277
11.7.3 System Working Principle
11.7.3.1 System Working Principle
Wake up and Sleep
When the engine is turned off, if the sleeping conditions are
met (engine shut down, no warning lamp alarm, no buzzer
alarm, main control Sleep CAN message four conditions are
simultaneously satisfied), instrument panel will enter a power
saving sleep mode, all the instrument functions and CAN bus
communication stops running. If the wake-up conditions are
met (CAN network communication, ignition switch signal,
reverse lamp switch one of the signals), the entire CAN bus will
return to normal operating mode.
Lighting
General Lighting Rules:
–
Instrument panel has white translucent lighting, LCD has
white backlight.
–
Lighting level is adjusted by an external PWM input signal,
after engine shut down lights brightness can still be
adjusted.
Lighting logic:
Ignition
Signal
Parking
Signal
Light
LCD Lighting
Instrument
Panel Lighting
Off
VCC
On, Brightness
Adjustable
On, Brightness
Adjustable
Off
GND
On, Brightness Is
Not Adjustable
Off
On
VCC
On, Brightness
Adjustable
On, Brightness
Is Not
Adjustable
On
GND
On, Brightness Is
Not Adjustable
Off
Note
When the instrument cluster enters into the sleep mode,
backlight will be off. If the parking lights are turned on,
instrument cluster will be awakened, LCD and
instrument cluster lighting will be enabled. In this case,
when the CAN network is in the sleep mode, the meter
only shows trip meter, odometer, ODO icon, fuel icons,
the water temperature icons, mode can not be switched,
non CAN based messages on the LED and sound alarm;
When the CAN network is awake, the instrument cluster
will start all defined functions.
Warning Lamps Control
–
Two warning lamps in the instrument cluster are powered
by battery, they are:
•
Headlamp High Beam Indicator
•
Daytime Running Light (If equipped)
Note
Other warning lamps in the instrument cluster are
powered by the ignition power supply.
–
The following warning lamps are directly controlled by the
hardware:
•
Headlamp High Beam Indicator
•
Daytime Running Light (If equipped)
•
Battery Charging Indicator
•
Tire Pressure Warning Lamp
•
Brake Malfunction / Low Brake Fluid Warning Lamp
•
Park Brake Indicator
•
Tire Pressure Management System Indicator
•
Engine Oil Pressure Warning Lamp
Note
The rest warning lamps are controlled by signals
from the CAN bus.
Buzzer
Buzzer Function
In the following five cases, the buzzer will sound, prompt the
driver the corresponding warning message. Buzzer tones
frequency parameter is stored in EEPROM.
11-278
Instrument / Driver Information System
Body Electric
Function
Trigger
conditions
Frequency
Time and
Interval
Keys are
not pulled
warning
When the ignition is
off, the key is not
pulled out, the
driver door open.
651.0 Hz
Buzzer
sound 2
min, until
the driver
door is
closed or
the key
being pulled
out. 500 ms
off, 500 ms
open.
Function
Trigger
conditions
Frequency
Time and
Interval
Seat Belt
Not
Tightened
Warning
1. When the
ignition is
turned on, the
drive seat belt is
not tightened,
buzzer will
sound for 4 s.
2. After the ignition
is turned on, if
the drive seat
belt is not
tightened, when
the vehicle
speed reaches
25 km/h. The
acoustic signal
is activated for
30 s.
3. If the seat belt is
fastened within
30 s, the visual
signal and the
acoustic signal
will be off.
4. If the speed is
less than 25 km/
h, acoustic
signals will be
activated until
the seat belt is
fastened or 30 s
elapsed.
5. The next time
the speed
exceeds 25 km/
h, whether or
not the driver
seat belt is
fastened, the
acoustic signals
will not be
activated.
578.7 Hz
Buzzer
sounds 4 s,
500 ms off,
500 ms on.
Body Electric
Instrument / Driver Information System
11-279
Function
Trigger
conditions
Frequency
Time and
Interval
Door Not
Open
Warning
when the speed is
greater than 10 km/
h, if a door opens.
Refer
to
.
868.0 Hz
Buzzer
sounds, 500
ms off, 500
ms on.
Reverse
Radar
Warning
when the vehicle is
reversing.
578.7 Hz
Buzzer on
and off is
determined
by the
reverse
radar input
signal. If the
signal is
low, the
buzzer
sound.
Otherwise
the buzzer
will be off.
Light Not
Turned
Off
Warning
If the following
four conditions
are met:
1. Ignition Off
2. Driver Door
Open
3. Key Pulled Out
4. Park lamp or
low beam lamps
are not turned
off
651.0Hz
Buzzer will
sound 2
min, 500 ms
off, 500 ms
on. If any
one of four
conditions is
no longer
valid, the
buzzer will
be off.
Self-Test
When the ignition switch is turned on, there are seven LED
warning lamps under the control of the software. These alarm
lamps are:
–
Engine Overheating Warning Lamp
–
Fuel Level Too Low Warning Lamp
–
ABS Failure Warning Lamp
–
Engine Emissions Failure Warning Lamp
–
Engine System Failure Warning Lamp
–
Airbag Fault Warning Lamp
–
EBD Fault Warning Lamp
When the engine speed is greater than 300 rpm, self-test is
interrupted.
Gages
After the engine is shut down, all gages return to zero.
Speedometer
There are two kinds speed signals used to calculate the speed.
One is obtained from the EMS module CAN message signal,
the other is the vehicle speed sensor frequency signal. When
the ignition system is turned on, the instrument cluster system
determines calculate the speed with which speed signal.
Priority is as following: CAN bus through the acquisition from
the EMS speed signal is greater than the speed sensor.
Specific speed signal switching in the following strategies:
–
If the ICU can not receive messages in continuous five
cycles, or EMS received CAN speed message is not valid,
the system switched to using the frequency sent from the
speed sensor signal to calculate speed within 50 ms.
–
If the CAN speed message is back to normal, and maintains
continuous five cycles, the system switches back to using
the CAN speed signal to calculate speed within 50 ms.
Engine Tachometer
Engine speed data is from the CAN bus, sent by EMS.
Instrument micro-controller accepts the signal, calculates the
engine speed, and then drives a stepper motor to point to the
appropriate location (rpm/min).
The behavioral characteristics of the engine tachometer is as
following:
–
When the engine is turned off, if the battery has been
connected, the engine tachometer pointer is back to the "0"
position.
–
If the battery is disconnected, the engine tachometer
pointer does not return to the "0" position; When the battery
is connected again, the engine tachometer pointer is back
to the "0" location
–
If the engine speed signal from the CAN is invalid or missing
for 5 s, the engine tachometer pointer will return to "0"
position.
11-280
Instrument / Driver Information System
Body Electric
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