Geely Emgrand X7. Manual part — 582

11.7.3 System work principle

11.7.3.1 System operating principle

Lightening:

Lighting color:

Function Day Night

Pointer

Red(632nm, Lighted)

Red(632nm, Lighted)

Plate dial/number white

Color/white

White/white

Back through lighting

White

White

Alarm light

Green, red, blue, yellow

LCD-negative polarity, white

on black.

White

Lighting logic:

Ignition signal

Position lamp signal

LCD, pointer and dial plate

illumination.

Close: Close Close

Open: Close Open

Close: Open Close

Open: Open

Open (backlight darken 1

level)

Warning lamp control

The following warning lamp is directly controlled by the hardware:

High-beam and lower-beam lamp indicator

– Charging

warning

lamp

– Tire-pressure

warning lamp

– Parking

brake

indicator

–

Indicator lamp of tire pressure management system fault

–

Oil pressure warning lamp

Buzzer

Buzzer function

In the following five cases, the buzzer will beep to remind the driver of corresponding warning
information. The tone frequency parameter of the buzzer is stored in EEPROM.

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Function Triggering

conditions

Alarm against

Unremoved Ignition

Key

When the ignition switch is under the state of ACC or OFF, the key is not
pulled out of, and the left front door is opened,

Unsecured warning of

safety belt

Driver's safety belt pill reminder signal must include visual signal and
audible signal.

If the driver does not wear the safety belt, the ignition switch is in
position "ON", the above two signals are activated at the same time,
wherein the audible signal lasts for 4 s and the visible signal persists in
activating state until the safety belt is worn.

If the driver does not wear a safety belt, the audible signal is activated for
30s consecutively when the forward running speed of the vehicle exceeds
25 Km/h; if the safety belt is worn within 30s, the visible signal is closed;
and if the safety belt is not worn after 30s, the audible signal is
automatically closed.

After activated, the audible signal is still activated if the speed is lower
than 25 Km/h until the safety belt is worn or within consecutive 30 s.

When the next speed exceeds 25Km/h, the audible signal is not be
activated secondarily regardless of whether the driver wears the safety
belt.

When the ignition switch is in the position "ON", a visual signal will be
under activation state continually until the safety belt of the driver is
worn.

Co-driver safety belt

unsecured

The signal of the front row of passenger safety belt reminding device is
in the form of visual signal and audible signal; meanwhile, the front row
of passenger shall have the detection function of the active condition of
the seat; if the front row of passenger seat is not ridden by the passenger,
the front row of passenger seat monitor sensor does not send out the use
signal at this time, and the safety belt reminding device is in close state
automatically.

If the passenger sits on the front row of passenger seat, the ignition
switch is in the position "ON"; if the passenger does not wear the safety
belt, the audible signal lasts for 10s; if the safety belt is worn within 10s,
the audible signal is closed; and the audible signal is automatically closed
after 10s.

Alarm against

travelling with door

unlocked.

Any one of four doors and two cover is not closed and the speed is higher
than 10Km/h, the buzzer beeps three times to remind the driver.

Overspeed Alarm

When the combination instrument speedometer is higher than 120Km/h
(allowable error of -1 Km/h), the buzzer beeps; and when the vehicle
speed is lower than 115Km/h (allowable error of +1 Km/h), the buzzer
stops beeping.

Parking motor

warning

The combination instrument prompts according to the distance from the
obstacle to the bumper and position information provided by the parking

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radar head unit.

The distance between the obstacle and the
vehicle

Sound frequency

800mm-1400mm

2Hz

300mm-800 mm

4Hz

0mm-300mm

Longly sounding

Light does not close

the warning.

When the ignition switch is under the state of ACC or OFF, the position
lamp turns on, and the left front door is opened,

Buzzer priority

When the alarm functions of the multiple buzzers exists at the same time, the high-priority alarm
will be activated preferentially; and if a higher-priority alarm function is generated when the
lower-priority alarm function is performed, the lower-priority alarm function will be activated
again after the higher-priority alarm function is completed. The buzzer warning function priority is
as follows:

Alarm against travelling with door unlocked＞alarm against unfastened seat belts (main and
auxiliary)>prompt of unremoved ignition key>prompt of forgeteting to turn off the clearance
lamp.

Seat belt alarm

At any time after ignition, the corresponding alarm lamp turns off unless the safety belt of the
driver or the co-pilot is worn. Self-check

After the ignition switch is switched on, 2 LED warning lamps turns on under the software control
to ensure the normal operation of the LED. These warning lamps are as follows:

–

Coolant high temperature alarm lamp:

LED turns on for 3 minutes for self-check after the ignition switch is switched on.

–

Low fuel warning lamp:

LED turns on for 3 seconds for self-check after the ignition switch is switched on.

When the engine speed is higher than 300rpm, self-inspection will be broken.

Scale

After flameout, the pointers of all scales return to the zero position of the dial plate.

Speedometer

Speedometer

Special stepping motor

Deflection angle:

240/degree

Input signal to speedometer.

The vehicle speed signal comes from the

vehicle speed sensor.

Corresponding output pulses per revolution of

4

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sensor

The highest level output

Min.high battery Vcc-0.5V

The lowest level output

Max. low level 0.5V

Duty ratio

50±12%

Max.drive current

25mA

The speedometer acquires the speed signal via the signal sent by the vehicle speed sensor.

Engine speed indicator

Revolution meter input signal: the revolution speed signal is from a square-wave pulse signal
given by the ECM.

The corresponding value of the revolution speed and the frequency:

Revolution speed r/min

Frequency Hz

1000 33.3

2000 66.7

3000 100

4000 133.3

5000 166.7

6000 200

7000 233.3

Fuel gauge

Fuel gauge input signal: it is from thick-film resistor sensor. One end is connected with the sensor
ground.

The fuel level sensor resistance parameters are recommended as follows:

Capacity: Capacity Resistance

Full 60L

40±4Ω

3/4 45L

96.5±5Ω

1/2 30L

150±5Ω

1/4 15L

205±6Ω

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