Chery A15. Manual - part 87

ABS SYSTEM CHECK

Terminal

Check Item

Ignition

Position

MK20I/E

Standard Value

 Unit

Battery voltage (motor)

OFF

25-8

10.1-14.5

V

Battery voltage (solenoid

valve)

9-24

V

Supply insulating property

8-4

0.00-0.5

V

Earth insulating property

8-24

V

Supply voltage

ON

8-4

10.0-14.5

V

OFF

Warning lamp

extinguishes

Visual

inspection

ON

ECU not

connected

Warning lamp

lights

Visual

inspection

OFF

Warning lamp

extinguishes

Visual

inspection

ABS warning lamp

ON

Connect the

ECU

The warning lamp

lights and then

extinguishes after

lasting for 1.7 s

Visual

inspection

Braking lamp switch

functional pedal not stepped

down

ON

8-18

0.0-0.5

V

Braking lamp switch

functional pedal stepped

down

ON

8-18

10.0-14.5

V

Resistance value of FL

wheel speed sensor

OFF

1-2

1.0-1.3

Resistance value of FR

wheel speed sensor

OFF

19-20

1.0-1.3

Resistance value of RL

wheel speed sensor

OFF

5-6

1.0-1.3

Resistance value of RR

wheel speed sensor

OFF

22-23

1.0-1.3

FL wheel sensor output

voltage

OFF

1-2

3.4-14.8

mV/HZ

FR wheel sensor output

voltage

OFF

19-20

3.4-14.8

mV/HZ

RR wheel sensor output

voltage

OFF

5-6

>12.2

mV/HZ

RR wheel sensor output

voltage

OFF

22-23

>12.2

mV/HZ

Sensor output voltage ratio

Maximum peak volt

         2

Minimum peak volt

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APPENDIX I:

ABS Q&A

1. What‘s ABS?

ABS, the abbreviation of Anti-lock Brake System, means the function of Anti-lock Brake
System (ABS), which is available to ensure that the vehicle traveling on different roads can
get the optimal brake distance, and, at the same time, has the better brake stability and
steering capacity.

2. Why the ABS is required?

The lock of front wheel will make the vehicle lose the steering capacity when braking, and
the lock of rear wheel will cause the disalignment or slide. Through preventing the wheel
from being locked, the ABS helps you to keep the operation control on the vehicle when
braking. In this case, you can change the direction and wind off the obstacle.

3. How to recognize whether your vehicle is quipped with ABS?

Two methods are recommended: the first one is to observe the instrument panel or switch
board when the vehicle starts and determine whether there is a ABS warning lamp which
lights at a short time. The second one is simpler, i.e., you consult your provider directly.

4. How the ABS works?

Based on the signals from the wheel speed sensor, the electronic controller in the ABS will
adjust the pressure on all wheel brakes via the solenoid valve in accordance with the
specified control logic, which looks like an experienced driver applies the repeat braking,
but the computer reacts more quickly than brain, and thus its effect is better.

5. How to determine whether the ABS is working?

You will feel the chattering of brake pedal when the ABS is working, and, at the same time,
you will also hear the sound from the hydraulic controller working. Here, keep in your mind
that you shall not be afraid of them, and shall step on the brake pedal reliably. Is the brake
distance of vehicle with ABS shorter than that of vehicle without ABS? In the great
majority of cases, the answer is YES, especially on the snow or wet road. But remember not
to forget to turn the steering wheel and wind off the obstacle at the critical moment.

6. How to do after ABS fails to operate?

The ABS warning lamp will light continuously once the ABS failure. In this case, the ABS
fails to operate, but the regular brake system is good. You just conduct the braking
operation in accordance with the regular method.

7. When the ABS warning lamp lights?

The ABS warning lamp will extinguish after it lights for 1.7 s after the vehicle starts. Since
then, the ABS warning lamp lights only when the ABS fails to operate. So, do not forget to
immediately get to the Service Station once the ABS warning lamp lights. It is
recommended that you don’t repair the ABS as your pleasure.

  “FOUR DOS” and “FOUR DONTS” for the use of ABS

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“FOUR DOS” and “FOUR DONTS” for the use of ABS

“FOUR DOS”

Do step on the brake pedal using your foot at all times, which can ensure sufficient and
continuous braking force to make the ABS effectively play its role.

Do maintain the sufficient brake distance. At least 3 s braking duration away from the front
vehicle shall be ensured when the vehicle travels on a better road, and the braking duration
shall be longer if the vehicle travels on a bad road.

Do learn how to use the ABS to make you prepare for the brake pedal chattering when the
ABS works and have the adaptive ability. The parking lot and squire is the best site to learn
the emergency braking and the use of ABS.

Do read the driver’s manual carefully, and further understand all kinds of operation
description provided by the vehicle manufacturer which installs the ABS.

“FOUR DONTS”

Don’t drive the vehicle with ABS at your more pleasure than drive the vehicle without
ABS. It is also improper and insecure for the ABS vehicle short-radius turning and quick
driveway changing and other rapid steering wheel turning.

Don’t step on the brake pedal repeatedly. When driving the vehicle with ABS, the repeat
step on the brake pedal will make the ABS connect and disconnect, which causes the low
brake efficiency and larger brake distance. In fact, the ABS itself will automatically
increase/decrease the braking force at higher speed, and provide the efficient steering wheel
controlled capacity.

Don’t forget to turn the steering wheel. The ABS provide the driver with the steering wheel
controlled capacity, but it itself doesn’t automatically implement the vehicle steering
operation.

Don't be afraid of the normal hydraulic working voice and brake pedal chattering when the
ABS works, the sound and chattering of which are normal and can make the driver feel
hereto that the ABS is playing its role.

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BODY 

EXTERIOR ACCESSORIES… … … …… … … …… … … …… … … …… … … S-4 

REMOVAL, INSTALLATION & ADJUSTMENT OF ENGINE HOOD… … … …S-4 

REMOVAL & INSTALLATION OF HOOD LOCK… … … …… … … …… … …S-5 

REMOVAL & INSTALLATION OF FUEL FILLER CAP… … … …… … … …S-6 

REMOVAL & INSTALLATION OF EXTERIOR REARVIEW MIRROR… … …S-6 

REMOVAL & INSTALLATION OF RADIATOR GRILLE… … … …… … … …S-6 

REMOVAL & INSTALLATION OF TRUNK LID TRIM PANEL… … … …… … S-7 

REMOVAL & INSTALLATION OF ROOF TRIM MOULDING… … … …S-7 

REMOVAL & INSTALLATION OF FRONT WHEEL HOUSE INNER FENDER…S-8 

REMOVAL & INSTALLATION OF REAR WHEEL HOUSE INNER FENDER ….S-8 

REMOVAL & INSTALLATION OF FRONT BUMPER… … … …… … … …S-8 

REMOVAL & INSTALLATION OF REAR BUMPER… … … …… … … …S-10

 

INTERIOR ACCESSORIES（A11 INTERIOR TRIM）… … … …… … … …… … S-11

 

REMOVAL & INSTALLATION OF INSTRUMENT PANEL… … … …… … … S-11 

REMOVAL & INSTALLATION OF FRONT SEAT BELT… … … …… … … …S-14 

REMOVAL & INSTALLATION OF REAR SEAT BELT… … … …… … … …S-15 

REMOVAL & INSTALLATION OF FRONT SEAT… … … …… … … …S-16 

REMOVAL & INSTALLATON OF REAR SEAT… … … …… … … …… … … S-16 

REMOVAL & INSTALLATON OF INNER REARVIEW MIRROR… … … …… S-17 

REMOVAL & INSTALLATON OF SUN VISOR & ITS BRACKET… … … …S-17 

REMOVAL & INSTALLATON OF PASSENGER GRAB HANDLE… … … …S-17

 

INTERIOR ACCESSORIES（A15 INTERIOR TRIM）… … … …… … … …S-18 

DISASSEMBLY AND ASSEMBLY OF INSTRUMENT PANEL… … … …… … S-18 

DISASSEMBLY AND ASSEMBLY OF PACKAGE TRAY TRIM PANEL… … …S-21 

DISASSEMBLY AND ASSEMBLY OF REAR SPEAKER… … … …… … … …S-22 

DISASSEMBLY AND ASSEMBLY OF SHIFT LEVER… … … …… … … …S-22 

DISASSEMBLY AND ASSEMBLY OF GLOVE BOX… … … …… … … …S-22 

DISASSEMBLY AND ASSEMBLY OF AIRBAG. … … … …… … … …… … …S-23 

S-1