Chery S11 / Chery QQ. Manual — part 32
Chery QQ Service 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
Chery QQ Service Manual Chassis System
Abnormal
Replace HECU
Normal
Abnormal Replace fuse or harness
Normal
Replace ECU
No
2、Wheel speed sensor:00283,00285,00290,00287
Remove motor harness
plug and connect battery
to motor plug to see if
motor works
Check fuse and ABS ECU
connector
Connect motor harness
Turn on ignition switch
Clear DTC
Diagnose HECU with instrument
Possible cause
2、DTC 00283,00285,00290,00287
Means no signal put out at 20km/h
Hint: No sensor, sensor coil and harness
short, too big or too small for clearance
between sensor and tooth ring or bad tooth
ring
No sensor
Sensor coil and harness short
Too big or too small for
clearance between sensor and
tooth ring
Bad tooth ring
ABS ECU fault
Faulty appears again?
Yes
Refer to intermittence malfunction
42
Chery QQ Service Manual Chassis System
Reinstallation
Yes
Abnormal
Normal
3、Wheel speed sensor
Possible cause
3、DTC 00283,00285,00290,00287
Means signal is over specification at 20km/h
Hint: Short sensor coil, tooth ring damage
or too big clearance.
Bad touch or short between coil
and harness
Too big or small for clearance
between sensor and tooth ring
Bad tooth
ABS ECU fault
Reinstallation
Abnormal
Normal
Replace ABS ECU
Normal
Normal
Normal
Sensor install
normal?
Abnormal
Check each tooth ring
Check clearance
Check each sensor
Check harness between
sensor and ABS ECU
Install sensor
normal?
Check out put voltage
on ABS pin 25
Check each tooth
ring
Check each tooth ring
Check clearance
NO
Replace
Replace
Fix or replace
Abnormal
Fix or replace
Abnormal
Abnormal
Abnormal
Abnormal
Check out put voltage on
ABS pin 25
Replace
Normal
Abnormal
Replace
Normal
Abnormal
Normal
Normal
Abnormal
Replace ABS
Check harness between
sensor and ABS ECU
43
Chery QQ Service Manual Chassis System
4、Wheel speed sensor
Possible fault
4、DTC 00283,00285,00290,00287
Means open or short sensor
Hint:Bad contact of sensor or short harness
or circuit fault on ABS ECU
Open sensor coil
Short sensor coil
Short between sensor and harness or
source
ABS ECU signal fault
Check each sensor
Normal
Abnormal
Abnormal
Yes
Check harness between
ECU and sensor
Normal
Remove ABS ECU
connector and mea-
sure
resistance
between terminals
of ABS ECU
Specifications :
1.0~1.3kΩ
Shake harness or
connector
MK20I/E
Front left:1-2
Front right:19-20
Rear left:5-6
Rear right:22-23
Check connector of
sensor
Fault
appears
again?
Refer
to
service hint
Normal
Fix connecter
Replace ABS ECU
5、ABS coding err
Possible cause
5、DTC 01044
Means the software and hardware problem
·Bad connect of ABS harness
·ABS ECU coding fault
44
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст