2008 GEELY MK wheel

Whether sensor is installed
correctlyYes
Install it correctlyCheck sensor output volt-
age at ABS ECU 25 chip
socketAbnormal
ReplaceCheck each wheel
speed sensorReplace ABS ECUNormal
ReplaceReplace or
repairCheck wheel bearing
clearanceCheck wiring harness
between sensor and
ABS ECUNormal
NormalMK-60 ABS system -ABS System Check5-105Fault code is 00283, 00285, 00290, 00287 3
[Description]When speed >20km/h, if sensor signal exceeds tolerance
range, this fault code will appear.
[Prompt ] It is propably because intermittent poor contact or short
circuit of sensor coil or wiring harness, gear ring is dam
aged or air gap between sensor and gear ring is too large, so
sensor signal is too weak.Possible cause

Intermittent poor contact or
short circuit of sensor coil or
wiring harness

Air gap between Sensor and
gear ring is too large or too small

Gear ring teeth is damaged

Bearing clearance is too large

ABS ECU fails
Abnormal
Abnormal
Abnormal Check the pulse ring

MK-60 ABS system -ABS System Check5-106Fault code is 00283, 00285, 00290, 00287 4
[Description]When identifiable open circuit, short circuit etc faults exist on
sensor, this fault code will appear.
[Prompt ] It might because poor contact of sensor, short circuit of coil or
wiring harness or faulty sensor signal processing circuit in ABS
ECUPossible cause

Sensor socket connector
or coil is disconnected

Sensor coil appear is
shorted

Sensor plug or wiring har-
ness is shorted with earth or
power supply

ABS ECU sensor signal
processing circuit failsCheck sensor of each wheel
Replace ABS ECURemove ABS ECU plug, check
whether resistance value between
the following terminals conforms
to standard value or not?
Standard value : 1.0-1.3K ohm¸
Left front : 45-46
Right front :33-34
Left rear : 36-37
Left rear: 42-43Check corresponding sensor
plugWhether fault recursCheck wiring harness between ECU and sensorRefer to key point for re-
pair of occasional fault Repair socket connector
Normal
No
YesAbnormal
AbnormalNormal Normal

MK-60 ABS system -ABS System Check5-108Fault code is 01130 7
[Description]When ABS suffers from high frequency interference of electro
magnetic wave or microprocessor thinks that input speed signal
is unauthentic, this fault code will appearPossible cause

High frequency interfer-
ence of electromagnetic
wave

Sensor is damaged or sen-
sor wiring harness is dam-
aged

ABS ECU is damagedCheck sensor output voltageReplace wheel
speed
Replace ABS ECUNoCheck sensorAbnormalCheck wiring harness
between ECU and
sensor Normal

Whether sensor is installed correctlyInstall it correctly Yes Check sensor output voltageAbnormal
NormalCheck each sensorAbnormal
ReplaceNormal
Check gear ring of each sensorAbnormalNormalReplace
Check wheel bearing clearanceAbnormalNormalReplace or
repair
Check ABS ECU socket and
middle socket connectorAbnormalNormalReplace
socket
connector
Does fault recurNo
YesRefer to key point
for repair of oc-
casional faultRemove ABS ECU plug, check whether resis-
tance value between the following binding
posts conforms to standard value or not?
Standard value: 1.0-1.3K ohm¸
Shake sensor wiring harness and socket con-
nector while measuring
Left front: 44-45 Right front: 33-34
Left rear: 36-37 Right rear:42-43Repair wiring
harness or socket
connector NormalAbnormalReplace ABS ECUUse fault diagnosis instrument to
conduct diagnosis of hydraulic
control unitAbnormalReplace ABS HCUMK-60 ABS system -ABS System Check5-111ABS works abnormally 3
[Description] This issue is closely related to driver condition and
road surface condition, so it is not easy to conduct
fault diagnosis. However, if there is no fault code
memory, the following inspection may be conducted.Possible cause

Sensor is not installed properly

Sensor wiring harness has problem

Sensor is damaged

Gear ring is damaged

Sensor is attached with foreign
matter

Wheel bearing is damaged

ABS HCU (hydraulic pressure unit)
is damaged

ABS ECU (electric control unit) is
damaged

Inspection item
V
V
V
V
V
Visual inspection
Visual inspection
Visual inspection
Visual inspection
V
V
ohm
k ohm
MV/Hz
MV/Hz
MV/Hz
MV/Hz Storage battery voltage (motor)
Storage battery voltage
(Solenoid valve)
Power supply insulating property
Earth insulating property
Supply voltage
ABS warning lamp
Brake light switch function pedal
is not stepped down
Brake light switch function pedal
is stepped down
Diagnostic interface
Left front wheel speed sensor
resistance value
Right front wheel speed sensor
resistance value
Left rear wheel speed sensor
resistance value
Right rear wheel speed sensor
resistance value
Left front wheel sensor output
voltage value
Right front wheel sensor output
voltage value
Left rear wheel sensor output
voltage value
Right rear wheel sensor output
voltage value
Speed sensor output voltage ratio10.1 ~ 14.5
10.1 ~ 14.5
0.00 ~ 0.5
0.00 ~ 0.5
10.1 ~ 14.5
Warning lamp goes out
Warning lamp illuminates
Warning lamp goes out
Warning lamp illuminates
for about 1.7s,then goes out
0.0 ~ 0.5
10.0 ~ 14.5
0.0 ~ 0.5
1.2 ~ 1.3
1.2 ~ 1.3
1.0 ~ 1.3
1.0 ~ 1.3
3.4 ~ 14.8
3.4 ~ 14.8
>12.2
>12.2 1-47
32-16
4-16
16-47
4-16
ECU is not
connected
Connect ECU
16-41
16-41
Diagnosis joint
K and 7
45-46
33-34
37-36
42-43
45-46
33-34
37-36
42-43 OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Maximum peak to peak value voltage
Minimum peak to peak value voltage2III. ABS system inspectionMK-60 ABS system -ABS System Check5-114Ignition switchpositionBinding post Standard value
Unitk ohmk ohmk ohm

Inspection item
Note: when perform the following inspection, vacuum must be applied on vacuum booster.Tightness of left
front wheel nor-
mally open valve
and normally
closed valveON
ON (two valves are
energized simulta-
neously with pump)Step on pedal
Step on pedalWhen left front wheel
cannot rotate, pedal does
not sinkCheck normally
closed valve
Left front wheel may
rotate freely, pedal does
not sinkCheck normally
open valveTightness of right
front wheel nor-
mally open valve
and normally
closed valveON
ON (two valves are
energized simulta-
neously with pump)Step on pedal
Step on pedalWhen right front wheel
cannot rotate, pedal does
not sinkCheck normally
closed valve
Right front wheel may
rotate freely, pedal does
not sinkCheck normally
open valveTightness of left
rear wheel normally
open valve and nor-
mally closed valveON
ON (two valves are
energized simulta-
neously with pump)Step on pedal
Step on pedalWhen left rear wheel
cannot rotate, pedal does
not sinkCheck normally
closed valve
Left rear wheel may ro-
tate freely, pedal does
not sinkCheck normally
open valveTightness of right
rear wheel normally
open valve and nor-
mally closed valveON
ON (two valves are
energized simulta-
neously with pump)Step on pedal
Step on pedalWhen right rear wheel
cannot rotate, pedal does
not sinkCheck normally
closed valve
Right rear wheel may
rotate freely, pedal does
not sinkCheck normally
open valve
Note: fault diagnosis instrument function "03 hydraulic control unit diagnosis" is used for this inspection.MK-60 ABS system -ABS System Check5-115Key switch position Operation Standard value RemarksIV ABS work inspection1. Check wheel speed sensor output voltage
a. Check whether gap between wheel speed sensor and gear ring meets standard value or not
For standard value of front wheel, see installation drawing of front wheel sensor
For standard value of rear wheel, see installation drawing of rear wheel sensor
b. Jack up wheel, loosen manual brake
c. Remove ABS wiring harness, measure at wiring harness socket connector

Section3 Removal and InstallationI. Precautions for removal and installation1. Firstly use diagnostic instrument to find out source of trouble, then repair.
2. Repair front prior use excluding mineral oil of detergent will surface clean Neatness ; repair when should note
before repair, use detergent without mineral oil to wipe off surface; pay attention to cleaning during repair, only
use rag without wool to wipe removed components.
3. Only use original factory spare parts, and new spare parts could only be unpacked just before installation.
4. Return liquid pump motor and hydraulic controller (HCU) is integrated structure, can not be separated.MK-60 ABS system -ABS System Check/ Removal and Installation5-116 d. Rotate the wheel at speed of about 1 / 2 turns per second, use multimeter or oscillograph to measure output
voltage
Terminal 45-46
Terminal 33-34
Terminal 37-36
Terminal 42-43
Output voltage

When use multimeter for measurement
See front wheel sensor drawing for front wheel.
See rear wheel sensor drawing for rear wheel

When use oscillograph for measurement
See relevant standard for front wheel.
See relevant standard for rear wheel.
e. If output voltage is not in above-mentioned range, the cause might be the following:

Air gap between sensor and pulse ring is too large.

Sensor fails.

Check sensor resistance value (1. 0 - 1. 3 k ohm).

Take four points on pulse ring to check air gap between pulse ring and wheel speed sensor (pulse ring
distortion).
2. Check hydraulic pressure unit HCU
a. Jack up vehicle to confirm that wheel may rotate freely.
b. Release manual brake.
c. After connecting fault diagnosis instrument, turn ignition switch to ON, here it is not necessary to start up
engine.
e. Check with reference to hydraulic control unit diagnosis.
Note: when connect or remove fault diagnosis instrument, ignition switch must be in OFF position

ABS HECU assy.III. Replace hydraulic control unit1. Press lock catch on joint side, remove wire harness of pump motor.
2. Remove 4 screws as as shown in the figure, the removed old screws
can not be reused.
3. Separate hydraulic control unit HCU from electronic control unit
ECU.
4. Mount new hydraulic control unit HCU onto electronic control unit
ECU.
5. Use new screw to fix ECU onto HCU, tightening moment: 3-4N.m.
6. Insert motor wiring harness, note that lock catch must be in right
position.MK-60 ABS system -
Removal and Installation5-117Schematic diagram for removal of ABS HECU brake oil pipe5. When system is opened, don't use compressed air or move the vehicle.
6. After removing ABS assembly, use appropriate plugs to plug up hydraulic delivery outlets as soon as possible.
Remove other parts that might hinder work.
7. Please use HZY4 brake fluid, do not use mineral oil.
8. Use brake fluid to soak sealing member and Oring, do not use engine oil or brake ointment.
9. After repair, check whether function of routine brake system and ABS brake is reliable and normal or not.
10. Check whether there is any leakage at all Hydraulic couplers.II. Removal of HECU1. Turn off ignition switch and disconnect storage battery minus earth wire.
2. Remove wiring harness plug from ABS HECU assembly.
3. Step down the pedal >60mm, use pedal bracket to fix it, so master cylinder center valve will be turned off, when
system is opened, brake fluid will not flow out from outlet.
4. Put a clean pad under hydraulic controller.
5. Firstly remove brake hard tube (A, B) on HCU connecting with master cylinder, make sign. Plug up the outlet
with a plug immediately.
6. Remove brake pipe (1 - 4) to wheels and make sign. Plug up the outlet with a plug immediately.
7. Remove the screw cap fixing HECU onto the bracket.
8. Remove the entire HECU from bracket.