2008 GEELY MK key

Step Action of operator Screen displayResult in normal conditionPump motor works
Wheel lockup
Wheel lockup
Wheels may rotate freely,
pedal rebounds, work noise
of pump motor may be heard
Wheels may rotate freely
Wheel lockup, pedal auto-
matically goes down slightlyHydraulic control unit diagnosis -- hydraulic pump testLeft front wheel -- step down brake pedal
Left front wheel -- normally open valve opens,
normally closed valve is closed, wheel lockup?
Left front wheel -- normally open valve is closed,
normally closed valve is closed, wheel lockup?
Left front wheel _ _ normally open valve is closed,
normally closed valve opens, wheels may rotate
freelyLeft front wheel _ _ normally open valve is closed,
normally closed valve is closed, wheels may rotate freelyLeft front wheel -- normally open valve opens,
normally closed valve is closed, wheel lockup?
Release brake pedal 01
02
03
04
05
06
07
08Step down brake
pedal and hold
* Perform testing of the above steps 2-8 for each wheel. Sequence is as follows: left front right front left
rear right back.
* If result of one of the above steps is different from the result in normal condition, it shows that corresponding
actuator fails to work normally, please check corresponding actuator.
* Here as long as "return " position appears on the screen, it may finish the testing via "ESC " key and returns
to function menu.VI. Troubleshooting quick index tableMK-60 ABS system - ABS Diagnosis5-100Diagnostic
codeFault description Diagnosis contentCheck
list No.Reference
page
65535
01276
00283
00285
00290
00287
01044
00668
01130Electronic control unit
ABS hydraulic pump
Left front wheel sensor
Right front wheel sensor
Left rear wheel sensor
Right rear wheel sensor
ABS coding error
Supply terminal 30
ABS works abnormallyDamaged
Motor cannot work
Electric and mechanical failure
Signal lacks of conformity5-103
5-104
5-106
5-106
5-107
5-107
5-108 1
2, 3, 4
5
6
7

Abnormal
Replace HCUAbnormal
Replace HCUYes
Replace ABS ECUSection 2 ABS System CheckI. Check list of fault with fault codeNote: If storage battery is discharged excessively, it might fail to drive motor, so when conduct motor drive test,
firstly confirm whether voltage of storage battery is normal, when conduct motor drive test, vehicle must be in idle
state.MK-60 ABS system -ABS System Check5-103Fault code is 01276 1
[Description ] When vehicle speed exceeds 20 km/h, ABS ECU monitors that
motor can not work normally, it will record this fault code
[Prompt ] When this fault appears, wiring harness connection between motor
and ECU may get loose. Use hydraulic pressure unit functional
testing of fault diagnosis instrument to drive motor for this test.Possible cause

Power supply is discon-
nected or earthed

Motor wiring harness gets
loose

Motor is damaged
Pull out motor wiring harness plug, connect
battery power source directly to motor plug, see
whether motor works or not?
Check safety wire and ABS ECU joint
Connect motor wiring harness
Turn ignition switch to ON position
Eliminate fault code
Use fault diagnosis instrument to conduct
hydraulic control unit diagnosis
Whether fault recurs
Refer to "key points of occasional fault
repair"

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 Check5-107Fault code is 01044 5
[Description]When ECU software code is inconsistent with hardware
bouncing pin connection, this fault code will appearPossible cause

Bouncing pin connection
error in ABS wiring harness

Abs ecu coding error
Fault code is 00668 6
[Description]When supply terminal 30 does not supply voltage or
voltage is too high, this fault code will appear.Possible cause

Abs system fuse is blown out

Storage battery voltage is too
low or too high

ABS wiring harness socket
connector is damaged

ABS ECU is damaged
Check ABS system 30 A safety wireReplace fuse
NormalAbnormal
Disconnect connection of ABS wiring harness and ECU,
turn ignition switch to ON position, measure voltage value
between the following terminals of ABS wiring harness
Terminal 1 and 47 9.5 _ 16.5V
Terminal 32 and 16 9.5 - 16.5V
Terminal 4 and 16 9.5 _16.5VReplace fuse Normal
Check ABS wiring harness socket connectorReplace fuse Abnormal
Retry. Abnormity reoccursYes
Check storage battery voltageNormal Abnormal
NoRefer to repair of
occasional fault
Key pointsUse fault diagnosis instrument to check whether ABS ECU software
code is correct
Correct value: 040907Recode
YesNoCheck whether ABS wiring harness bouncing pin joint is connected
Bouncing pin joint : ABS ECU Pin 38and Pin 14Repair wiring harness Abnormal

Check ABS warning lamp
safety wire in fuse boxCheck
ABS warning lamp safety wire
in fuse boxReplace AbnormalRemove ECU joint, when igni-
tion switch is in ON, does warn-
ing lamp illuminate ?NoNormalCheck whether ABS warn-
ing lamp is burnt outYes
ReplaceCheck whether warning
lamp power supply circuit
and ground loop in wiring
harness is disconnectedAbnormalRepair wiring
harnessCheck warning lamp power
supply circuit and ground
loop socket connector in
wiring harnessAbnormalRepair socket
connectorDoes fault reoccurNoRepair wiring harnessYe s NormalNormal NoRefer to key point
for repair of occa-
sional faultII. Check list of fault without malfunction codeMK-60 ABS system -ABS System Check5-109When ignition switch is in ON position (engine stall), ABS warning
lamp does not illuminate 1
[Description ] ABS warning lamp does not illuminate, warning lamp power
supply circuit might be disconnected, bulb is burnt out or
warning lamp driving module is damaged.Possible cause

Safety wire is burnt out

ABS warning lamp bulb
is burnt out

Power circuit is discon-
nected

ABS warning lamp driv-
ing module is damaged
YesCheck whether the wire in ABS
wiring harness connecting ABS
warning lamp driving module
and ECU is shorted to ground

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
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

V. Reinstallation of ABS assemblyNote: plug of hydraulic opening on ABS assembly may be removed only when brake hard tube is to be installed,
so as to avoid foreign body entering brake system
1. Mount ABS assembly to bracket and tighten it, moment is 20~24 N.m.
2. Remove the plug on hydraulic opening, mount brake hard tube, confirm that hard tube connection is correct.
3. Mount brake hard tube to master cylinder.
4. Tightening moment for assembly of brake hard tube is 12~16N.m (M10 x 1) and 15~18 N.m (M12 x 1).
5. Fill new brake fluid into tank until liquid level reaches MAX place, use specified method to exhaust.
6. Turn ignition switch to ON, ABS warning lamp must illuminate for 1. 7s, then go out.
7. Eliminate fault code memory, reread to see whether there is any fault code.
8. Finally, run the vehicle in actual situation to confirm function of ABS (you should feel rebound of pedal).VI. ECU codeNote: when replacing HECU or ECU, encode new ECU, otherwise ABS warning lamp blinks, system can not work
normally.
Use fault diagnosis instrument to encode ECU, the steps are as follows:IV. Replace electronic control unit1. Press lock catch on joint side to remove wiring harness.
2. Remove 4 screws as shown in the figure and discard them.
3. Remove hydraulic control unit HCU from electronic control unit
ECU.
4. Mount new electronic control unit ECU onto hydraulic control unit
HCU.
5. Use new screws to lock ECU on HCU, torsional moment:3-4N.m.
6. Insert motor wiring harness, note that lock catch must be in right
position.MK-60 ABS system -Removal and Installation5-118Connect fault diagnosis instrument and fault diagnosis interface
Select function 07, press OK key to confirm
Input code 04097 at code input place, press OK key to confirm
Select function 06, press OK key to confirm, exit diagnosis mode
End