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
No
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
46
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
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Chery QQ Maintenance Manual Chassis System
No
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
No
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
48
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
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
49
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