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

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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.

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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

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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

11.7.3.1

 

Door

Status Display

.

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.

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Instrument / Driver Information System

Body Electric