Chery S11 / Chery QQ. Manual - part 189

 

Chery    QQ    Maintenance Manual                                            Chassis System 

 
 

Section four    ABS controller 

 

 I、Fault diagnosis flow chart 

 

Start

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

No 

 
 

 Yes 

 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 

 

            Abnormal 

     

 

                                                Normal 

Tester linkage

Key switch to“ON”

Open

tester switch, ,select “QQseries”

Select “MK20-I/E type ABS system”

Select “Versatile OBD-16 diagnosis socket”

Whether able to communicating

Non- DTC

check

table repair 

Hap malfunction 

Lasting malfunction

Record DTC 

Clear DTC 

Repair accordintg to hap malfunction

diagnosis

Repair as Malfunction DTC check table   

Clear DTC 

Key switch  off，removal tester 

End 

On road check 

DTC 

 

 

 
 

38

   

                                                                                                                                                                                                       

 

Chery    QQ    Maintenance Manual                                            Chassis System 

 
 

II、Fault diagnosis Points of attention 

ABS applies electronic hydraulic control system. The phenomenon in table below 

is not malfunction during system normal operation. 

 

Symptom 

Explain 

System self diagnose sound 

Knocking sound appears when engine 
starts. It’s normal for system self 
diagnose sound 

ABS working sound 

 

 

1. Sound in ABS HECU motor. 
2. Pedal vibration sound 
3. Sound from suspension knock or 

tire touch with ground 

Attention: When ABS works normally, 
tire still has sound. 

Brake distance is long during ABS 

works 

 

The braking distance of ABS vehicle is 
longer than NON-ABS vehicle on snow or 
sand road. 

 

III、The operation and the function  

（1）  Connect tester and diagnosis socket when power is off, turn on ignition 
switch 
（2）  Turn on tester power supply and select“Wind Cloud Series” 
（3）  Select“MK20-I/E type ABS system” 
（4）  Select correct diagnosis socket 
（5）  Select tuitable function item 
 (For ABS circuit control please refer S11 electronics service manual) 

 

四、Service hints for intermittence malfunction 

The intermittence malfunction appears because the bad contact in circuit and 

input/output signal points. Check the intermittence malfunction according to DTC 
table. Sometimes the intermittence malfunction will disappear automatically. So 
it’s not easy to find the problem. 
Check the intermittence malfunction would appear again with following simulation. 
1. If the vibration is main cause: 
. Shake gently the connector left, right, up and down. 
. Shake gently the harness left, right, up and down. 
. Shake gently the sensor left, right, up and down. 

 

 
 

39

   

                                                                                                                                                                                                       

 

Chery    QQ    Maintenance Manual                                            Chassis System 

 

. Shake gently other parts such as bearing left, right, up and down. 
 
Attention: Replace new parts, especially the sensor, if harness is broken. 
2. If over heat or over cold is main cause: 
. Heat the parts with hair drier. 
. Spray cold fog to check any cold weld. 
3. If the contact resistance of source is too big: 
. Turn on all appliance switches including headlamp and rear defogger switch. 
Wait for another intermittence malfunction appears. 
 
 

五、MK 20 ABS system 

（1）、Check ABS warning light 
Check if ABS light is on as follows: 
1、Turn on ignition switch, the light will be on for 1.7s, then turn off. 
2、It will be fault if not as above mentioned. Please check DTC. 
3、If the light does not on at all, please refer non-DTC check table. 
（2）、Read signal 
Connect diagnosis instrument with the OBD-IIconnector near pedal. Turn on 
instrument and read signal from ABS ECU. 
1、For example, the version and part number of ABS ECU. 
S11-3550010 
2、Coding（Coding）：01901　　　　　 
（3）、Reading DTC 
Enter “ABS for MK20-I/E”, select DTC and push CONFIRM key. DTC will be displayed 
on the screen. 
（4）、Clear DTC 
1） Push CLEAR after reading DTC. 
2） The screen will display. 
 

 
 

3） Push YES. If the trouble is cleared, DTC will be cleared completely. 
 
（5）DTC display mode 

System problem display code 

The display code 

Non-DTC 

Never happened 

Non-DTC 

At present no 

problem 

Happened before 

Hap DTC 

Never happened 

Non-hap DTC 

Problem still 

exists 

 

Happened before 

Hap DTC and non-hap DTC 

Want clear DTC ? 

[Yes]：Delete（key on，engine off）

 
 

40

   

                                                                                                                                                                                                       

 

Chery    QQ    Maintenance Manual                                            Chassis System 

 
 
Troubleshooting table index 

（1）Troubleshooting table index 

DTC 

Symptom 

Diagnosis 

65535 

ECU 

Damage 

01276 

ABS Hydraulic pump 

Motor does not work 

00283 

Front left sensor  

00285 

Front right sensor 

00290 

Rear left sensor 

00287 

Rear right sensor 

Electric  or  mechanic 
faults 

01044 

ABS Code Fault 

 

00668 

Source terminal 30 

 

01130 

ABS abnormal 

Bad signal 

 
 

（2） Non-DTC malfunction table index 

Symptom 
Turn on ignition switch, ABS light not up 
Start engine but warning light not turn off 

Uneven brake torque on both sides 
Brake torque not enough 
Step on pedal, ABS works ( vehicle is stopping) 
Step on pedal, ABS works ( vehicle is running) 

ABS abnormal 

Pedal shocks badly when ABS works 

Too long for brake travel 
Need too much force to step on pedal 
No DTC put out ( cannot communicate with diagnosis instrument) 

 
 

七、Troubleshooting table 

1、ABS Hydraulic pump 

Possible cause 

1、DTC 01276 
It means ABS ECU find that motor cannot work 
normally at 20km/h 
Hint: Harness between motor and ECU is loose. 
Test with diagnosis instrument. 

Source open or ground 
Motor harness loose 
Motor damage  

 
Attention: Vehicle must be in idle state when proceeding electric motor drive 

test  
 
 

 
 

41