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Chery S11 / Chery QQ. Manual - part 191

Chery QQ Maintenance Manual Chassis System

Abnormal

Replace sensor
of sensor

Check Out put voltager

Normal Normal

Check senso

Replace ABS ECU

Check harness

8、Non- DTC troubleshooting table

（1）Key on, engine of, ABS warning light off

Possible cause

Means ABS light off, open light circuit, lamp
burn out or light control unit damage

·Fuse burn out
·ABS lamp burn out
·Open source circuit
·ABS light control
unit damage

Check ABS light fuse Abnormal

Replace

Normal

Check fuse block Fix

Normal

Disconnect ABS ECU Conn Yes

Turn on switch：ON NO Check lamp Replace
Light is up?
No

Yes Check ground Abnormal

Chech ABS light or Repalce harness
harness ground Normal
Short or ground

Yes Check connector Abnormal Fix connector

Replace harness of ABS light

Normal No Refer to service

Fault again? points

Yes

Replace controller

Chery QQ Maintenance Manual Chassis System

（2）Engine start, light is on

Possible cause

Means ABS light controller damage or open

·Light controller damage

·ABS light controller open

·ABS ECU fault

Attention: This malfunction only appears on normal source voltage and without

DTC.

Yes

器之间的电线是否开路 Replace harness

NO Abnormal

Check if open between
ECU and light

Check controller Replace

Normal

Replace ABS ECU

（3）ABS abnormal

Possible cause

Means the fault is connect with the driver

or road

·Sensor bad installation

·Bad harness

·Sensor damage

·Tooth ring damage

·Dirt on sensor

·Bearing damage

·ABS HCU damage

·ABS ECU damage

Chery QQ Maintenance Manual Chassis System

Install correctly

Yes

Install sensor right?

Abnormal Abnormal

Replace

Normal Normal
Abnormal

Replace

Abnormal Normal

Abnormal

Replace ABS HCU

Fix or replace

Normal

Fix socket

Normal

Abnormal

Fix harness or

connecter

Replace ABS ECU

Check out voltage

Check HECU with tester

Check sensors

Check each tooth ring

Check bearing

Check plug of ABS ECU
and connector

Fault again?

Normal

Measure resistance of ABS

harness

Specifications：1.0-1.3kΩ
Shake harness and connector
MK20I/E
Front left:1-2
Front right:19-20
Rear left:5-6
Rear right:22-23

Abnormal

Refer to ser-
vice points

Chery QQ Maintenance Manual Chassis System

4、Too long for pedal travel

Possible cause

Check any leakage in system

·Fluid leak
·Valve leak
·Air in system
·Disc damage
·Bad manual brake

Abnormal

Screw connector

Abnormal

Normal

Abnormal

Replace disc

Normal

Abnormal

Replace manual brake

Normal

Abnormal

Reexhaust

Normal

Abnormal

Replace HECU

5、Must step on pedal hard

Possible cause

Check booster or pedal travel with conventional

way

·Bad booster

·Bad valve

Check exhaust

Check valve leakage

Check valve

Check booster and pedal

travel

Check manual brake

Check disc

Check any leakage

Replace HECU

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