2006 GREAT WALL HOVER ESP

electric clutch detector
37. Detect the electric clutch assembly .
a. Measure the clearance between the shift fork and shift fork
sleeve.
Range of clearance : 0.2-0.4mm
It should replace the electric clutch assembly and shift fork
sleeve when the clearance is not in the range.
b. Connect the electric clutch assembly to the electric clutch
detector and power the electric clutch detector with220V
power supply to test the electric clutch (Before the test,
adjustthe test controller status to make the motor starting time
is 3s ,the time form found the actuator is not in position to
restartingis 2.5s and the time of controller to redrive the
electric clutch is2s) The motor starts for 3s when the gear
switch is shifted form 2WD to 4WD, the lamp flashes at the
same time, the clutch is in 4WD status, the indicator lamp is
light always. If does not reach the 4WD status in the first
time, then the controller restarts it for 2s after 2.5s delay, the
lamp flashes at the same time; if it is still not in position, then
the indicator lamp flashes twice continuously, the indicator
lamp is extinguished for 1s, the motor is stopped. That means
the electric clutch is unqualified and should be replaced by the
qualified product. The motor starts for 3s normally when the
clutch is shifted form 4WD to 2WD, the lamp flashes at the
same time, when the clutch is in 2WD status, the indicator
lamp is extinguished always. If does not reach the 2WD status
in the first time, then the controller restarts it for 2s after 2.5s
delay, the lamp flashes at the same time; if it is still not in
2WD status, then the indicator lamp flashes twice
continuously, the indicator lamp is extinguished for 1s, the
motor is stopped.
That means the electric clutch is unqualified and should be
replaced by the qualified product.
38. Cover the shift fork sleeve on the major
semiaxle spline.
39. Install the separator housing on the front axle
tube flange and use the bolt to tighten it to the
specified torque
(The bolt should be precoated
with the screw lock agent and the amount should be
just can cover the complete screw)
specified torque : 90-110Nm
Caution: Before installation, remove the foreign material on
two matching surfaces of separator housing and front axle
tube flange; and precoat the 1596 silicon rubber plane sealant
on the front axle tube flange. Caution: Prevent the sealant
from entering into the screw hole.
40. Press in the plastic vent tube on the electric
clutch housing and front axle tube.
41. Install two location pins in the location pin hole
of electric clutch housing respectively.
42. Coat the connecting surface of electric clutch
housing and electric clutch with 1596 silicon rubber
sealant uniformly; level it by plate.
Caution: The connecting surface should be cleaned
and must not have the oil and other foreign
matters. The sealant must not enter into the elec-
tric clutch housing and screw hole.

limitationlimitationCheck and repair of rear axle components
1. Check the rear axle and flange for wear, damage
and run-out.
Max. Run-out of axle: 2mm
Max. Run-out of flange: 0.2mm
It should replace the rear axle if the rear axle or flange is worn or
damaged, or the measured run-out is beyond the specified value.
2. Check the external oil seal
a. Check for the wear or damage; especially for the lip of oil seal.
b. Replace it if necessary.
3. Check the bearing and oil seal holder
Check for wear and damage, replace it if necessary.
4. Remove the bearing and oil seal holder
a. Move the brake and oil seal pressing block to the limit position
along flange direction; move the external oil seal to the limit
position of oil seal.
b. Place the hook of the special tools in sequence, the position is
shown as figure; make the hook holds the bearing tightly; then
use the bolt to connect the hook to the hammer fixedly; at last,
place it on the pad with halfaxle spline end facing ground.
c. Hold the hammer to beat downwardly with force for several
times to remove the bearing and oil seal holder.
Caution: Do not damage the oil seal .
5. Install the new external oil seal
a. Clean the semiaxle.
b. Coat the lip of external oil seal with proper HP-R grease.
Caution: When install the oil seal, the lip of oil seal must not
contact the semishaft to avoid scratching the oil seal .
6. Replace the bearing and oil seal holder
a. Heat the oil seal pressing block in 22# engine oil to 100.
Caution: The end of oil seal pressing block with larger chamfer
faces the halfaxle spline. Install it immediately after taken out.
b. Use the hydraulic press to install the new bearing and new oil
seal pressing block by press.
7. Install the circlip
Use the circlip pliers to install the new circlip in the slot of semiaxle.

Brake-14
Assembly of brake pump
1. Preparation work
All components should be washed, dried by wind and without foreign
material before the assembly. During the assembly, cost the guide pin
and location pin with proper vacuum silicon based grease; coat the
working surface of piston and square gasket with proper rubber
lubricant.
2. Install the piston gasket in the tong body.
a. Screw the bleed screw into the bleed hole;
tightening torque 7
10Nm.
b. Install the square gasket in the sealing groove of two cylinders of
pump respectively after coat its working surface with proper
rubber lubricant.
3. Install the piston with dustproof cover in the tong
a. Cover the dustproof cover on the piston.
b. Lengthen the dustproof cover to expose the bottom of piston
from the dustproof cover clip ring; use the tool (for example: steel
wire about
2mm ) to assist insert the clip ring into the cylinder
hole clip ring groove.
Caution: The used tools must not be sharp to prevent the damage
of dustproof cover.
c. Press the piston to the bottom of cylinder hole by hand.
4. Pre Install the guide pin and location pin on the tong bracket.
a. Install the guide pin dustproof cover on the guide pin and location
pin respectively.
b. Screw the guide pin and location pin in the tong bracket
respectively.
Caution: Do not damage the guide pin dustproof cover.

Brake-22
2. Install the piston gasket in the tong body.
a. Screw the bleed screw into the bleed hole;
b. Install the square gasket in the sealing groove of two cylinders of
pump respectively after coat its working surface with proper
rubber lubricant.
Tightening torque 7
10Nm.
3. Connect the brake pipeline
Connect the brake oil pipe to the tong.
Tightening force: 50
5Nm
4. Fill up the brake system with the brake fluid and drain the air
in the brake system.
5. Check for leakage of brake fluid.
Rear parking brake
pull-out piece
spring draw bar
hand brake
stay wire
front brake shoe
lower tension spring
clearance-adjusting bolt
clearance-adjusting gear
clearance-adjusting
bolt head
pull-out piece
spring seat
pulling arm pin
rear brake shoe
brake shoe pulling arm
saddle type washer
push pedal
push pedal
release spring
stopper
upper release spring
rear brake disc
Used component which can not be used any more.
Removal of rear brake
Remarks: When the brake torque of the hand brake cannot meet
the brake requirement, the thickness of the brake shoe gasket
shall be tested. If it is less than the minimum value of brake show
gasket, the brake shoe shall be replaced.
minimum thickness: 1.0mm

Safety airbag-6
brown whitered
diagnosis plug
black
Failure judgment
1. Failure record (failure code storage)
When ECU determines the error through the cyclic diagnosis and test, SRS-ECU should saves the corresponding code, first
judgment time, final judgment time and number of occurrence in EEPROM.
RS-ECU can stores 6 failures at most, under voltage failure and two collision records (front and side).
Failure code approved by SRS-ECU
Serial No. Failure description Debugging
1 Ignition loop 1 (driver ’s front airbag), resistance is too high or open-circuit. Can
2 Ignition loop 1 (driver ’s side front airbag), resistance is too low or short-circuit Can
3 Ignition loop 1 (driver ’s side front airbag), grounding Can
4 Ignition loop 1 (driver’s side front airbag), connected to power supply Can
5 Ignition loop 2 (passenger side front airbag), resistance is too high or open-circuit. Can
6 Ignition loop 2 (passenger side front airbag), resistance is too low or short-circuit Can
7 Ignition loop 2 (passenger side front airbag), connect ed t o power supply Can
8 Ignition loop 2 (passenger side front airbag), connect ed t o power supply Can
9 Power voltage is high Can
10 Power voltage is low Can
11 Alarm light failure, connect ed to power supply or lamp is short-circuit Can
12 Alarm lamp is failure- grounding or filament is open-circuit. Can
13 Shortage/failure of algorithm parameter Cannot (replace the
SRS-ECU)
14 The front collision is recorded Cannot (replace the
SRS-ECU)
15 Communication failure Can
16 Internal failure (refer to following table) Cannot (replace the
SRS-ECU)

Safety airbag-9
Project 3 functional working (neither possible explosion failure or historical failure).
Table 4.9 indicator lamp’s activities after ignition
2.Failure indication
The alarm lamp will indicate it in case any failure arises. If the external failure is a historical one, the indication will be called off. If
the number of history-accumulated failures is or more than 5, the alarm lamp will keep illuminating albeit no failure emerges. The
case of low power will be excluded.
A displayed or historical failure can but only be reconfigured by the service personnel. An internal failure or impact record can not
be reconfigured, in these cases, SRS-ECU must be replaced.
3.Micro controller-independent alarm lamp illumination
The micro-controller in clear failure status can not work therefore can not control the alarm lamp. In this case, the alarm lamp
will be directly lighted via suitable circuit despite of the micro-controller. As following,
The battery for SRS-ECU fails, the alarm lamp will be continuously lighted through the lamp drive function.
b. No internal working voltage, the alarm lamp keeps illuminating
c. Reconfiguration caused by watchdog’s trigging failure, the alarm lamp flashes.
d. No work of micro-controller, the alarm lamp keeps illuminating
e. Incomplete plugging-in of SRS-ECU connector, the alarm lamp keeps illuminating via shoring bar Next explain the diagnostic
procedure by taking some examples
If the alarm lamp is found keeping illuminating, please test it according to the following procedure even it extinguishes finally.
First test the failure region with the scanner followed by the test in the failure region with the corresponding approaches and
steps.
a If an internal failure or the explosion of safety airbag is scanned, replace the SRS-ECU
b.Troubleshooting Project 2. The number of history- accumulated failures is or more than one and less than 5. (The case of low power is excluded)

Safety airbag-10
1. Extinguishments of safety airbag system alarm lamp
Troubleshooting
Extinguishments or normal-light of alarm lamp
NO . Troubleshooting item Description
1 T he warning la mp of safety a irbag
system is not displayed. Safety airbag system warns circuit failure
2 T he warning la mp of safety a irbag
system is light normally. Safety airbag system warns circuit failure or external
failure.

1 Extinguishments of safety airbag system alarm lamp
Test status Safety airbag system warns circuit failure.
Possible causes No voltage (fuse shutoff)
Combined instrument failure
Failure of wiring harness between instrument cluster and ECU unit

Diagnostic procedure
When first carry out failure test, joggle the wiring harness and plug to test whether there is periodical bad contact in the circuit, if
it so, please confirm whether the plug, terminal and wiring harness well connected and in good condition. If it is not any of previous
cases, operate according to the following steps.
Procedure Te s t Operation
Ye s Place the ignition switch in LOCK
position followed by next step
1 Test other wiring harness and instrument cluster
indicator lamp
·place the ignition switch in ON position
·light other alarm and indicator lamps No Test the instrument cluster power-supply
system and grounding s ystem (fuse), then
go to step 5.
Yes Next step
2 Bulb test
Warning:
Incorrect handling with the safety airbag system
units will cause the safety airbag’s improper
release and pretension of safety belt, which will
lead to serene accidents. Please read safety airbag
service warning before handling the safety airbag
units.
·Place the ignition switch in LOCK position。
·shut off accumulator negative line and keep the
status for at least 60 seconds.
·Remove the combined instrument.
Test the connection between the two
corresponding stitches of safety airbag alarm lamp No





Rep la ce th e b ulb of a larm la mp.

Safety airbag-12
Begin the test with diagnostic communication with special diagnostic device (X-431 diagnostic tester) and ECU
to find out the failure causes, do the next test providing communication is not successful.
Procedure Te s t Operation
Yes Next procedure
1 Test the battery
Test the battery voltage
Is the voltage higher 9V? No Insufficient battery supply.
Test the charging/discharging
system, then go to step 5.
Yes Next step
2 Test the wiring harness connection between ECU and
combined instrument.
Place the ignition switch in LO C K position。
Shut off the battery negative.
O pen the central channel guard plate.
Shut off the instrument combined connector clip
Connect the negative of battery
Place the ignition switch in ON position.
Check whether the instrument connector clip terminal
voltage is 12V(power supply and instrument line) No Check the circuit and continue the
operation according to step 5.
Yes Next step
3 Place the ignition switch in LO C K position。
Check the connection of corresponding terminals between
instrument connector clip and diagnostic interface
(diagnose the two ends of K-line) No Repair or replace the wiring
harness and continue according to
step 5
Yes Next step
3 Make sure the shutoff of accumulator negative line and
keep the status for at least 1 minute.
Shut off ECU connector clip
Shut off the instrument cluster plug.
Connect the ECU plug terminal 5,7,9 and instrument
cluster plug? No Replace the wiring harness and
step 5
Yes Replace ECU
4 Remove EC U to check the condition of term inal and
whether the shorting bar is broken.
No Reconnect EC U connector clip
and next step.
Yes Troubleshooting followed by the
explanations to customers upon
the repair ing pro ced ur e.
5
Make sure that the failure will never reoccur after
repairing.
Place the ignition switch in LO C K position。
Shut off accumulator negative line and keep the status for
at least 1 m in ute.
Connect all ECU plugs
Connect the driver’s side safety airbag combined
instrum ent p lug
Connect the passengers’ side safety airbag combined
instrum ent p lug
Connect the driver and passengers’ side pretension safety
belts plugs.
(Vehicles with pretension safety-b elts)
Connect clock spring plug
Connect the accumulator negative line
Place the ignition switch in ON position
Does the safety airbag alarm lamp work functionally? No Retest the failure symptoms;
repeat from step 1 if the failure
reoccurs.