steering GREAT WALL HOVER 2006 Service Workshop Manual

Safety airbag-18
Impact-vehicle diagnosis
Test SRS-ECU diagnostic signals
1. Connect the (X-431 diagnostic test’s) diagnostic joint
2. Read the diagnostic results with X-431 diagnostic tester
Repairing procedure
1.When safety airbag is released.
The following parts should be replaced with new ones
a. Passengers’ side safety airbag module
b. SRS-ECU
c. Driver’s side safety airbag module
2 Check the following parts; replace them with new ones providing something wrong with them.
a. Clock spring
b. Steering-wheel, steering column, bottom steering shaft module
3.Driver’s side safety airbag module’s installation status towards the steering wheel.
a. Check whether abnormal knocking is with the steering wheel, its activity is in good condition and its clearance is normal.
b. Check whether the wiring harness joint is broken and its terminal is deformed.
Caution: Due to the impact, the diagnostic instrument cannot communicate with SRS-ECU when accumulator is lack of
power, in this case, check and maintain the instrument panel wiring harness or utilize the extension power supply.

Safety airbag-19
1. Check whether depression, crack or deformation is with the SRS-ECU bracket.
2. Check whether the joint is broken and terminal is deformed
3. Check SRS-ECU bracket’s installation status
a. Check whether depression, crack or deformation is with the shroud
b. Check whether the joint is broken, terminal is deformed and wiring harness is meshed.
c. Check whether depression, crack or deformation is with the gas generator shield.
d. Make sure the direction of the arrow is straightforward
4. Check the installation status of safety airbag module.
Driver’s side safety airbag module (the following Figure)
generator
bracketconnect the hornconnect the driver’s side
module
Clock spring (right Figure)
1. Check whether the joint and protecting tube are broken and the terminal is deformed.
2. Check whether the shield is deformed.
Steering wheel, steering column and bottom steering shaft module
1. Check the installation status of driver’s side safety airbag module
2. Check whether abnormal knocking is with the steering wheel and its clearance is normal
Passengers’ side safety airbag module (the following Figure)
1. Check the installation status of passengers’ side safety airbag module
2. Check whether the shield is deformed

Safety airbag-20
Wiring harness joint (instrument cluster wiring harness)
Check whether the wiring harness is well installed, the joint is broken and the terminal is deformed.
Warning
The attentions for use and maintenance for SRS safety airbag are displayed in the Figure. Operate according to the sign and, the
destructed and dirty sign must be replaced with a new one steering
wheel in Figure6-1
Driver’s side safety airbag module in Figure 6.2
Clock spring in Figure 6.3
SRS-ECU in Figure 6.4
Sun visor in Figure 6.5
Passengers’ side safety airbag module in Figure 6.6
Passenger side airbag (PAB)

Safety airbag-23
Driver’s and passengers’ side safety airbag module (DAB, PAB), clock spring
Caution
1. Continue the operation 60 seconds after the removal of accumulator negative. Wrap the negative with insulating
tape for insulation.
2. Safety airbag module and clock spring must not be separated nor repaired, replace the failed ones with new ones.
3. Please pay high attention when using the safety airbag module and clock spring, do not let them fall on the ground
nor fall into water or oil. Moreover, replace the depressed, crack or deformed ones with new ones.
4. After the safety airbag module is released, keep the released side up, store it somewhere flat and do not lay anything
on it.
5. The safety airbag module must not be stored in a place with the temperature above 93
.
6. The released safety airbag module must be replaced with a new one, at the same time test the clock spring, replace
it with a new one if something unusual with it.
7. Use gloves and protection glasses during operating the released safety airbag.
8. The unreleased safety airbag must be abandoned after its release.
Caution
During the removal, the wring harness connector clip must be removed before the removal of other wring harness
connector clips in order to avoid the possible improper release caused by static interferences, which is reversal to the
case of installation.
1. Removal and installation
Driver’s side safety airbag module, passengers’ side safety airbag module, clock spring.
2. Operations before removal.
a. Take out the ignition switch key after the steering wheel and front wheel in straightforward direction.
b. Remove the connections of accumulator negative
3. Driver’s side safety airbag module removal procedure
a. Screw off the bolts of two sides, as showed in Figure 8-1
b. Shut off the wiring harness connector clip
c. Remove the safety airbag module assembly
d. Remove the steering wheel
4. Passengers’ side safety airbag module removal procedure
a. Remove all the trim covers and glove boxes of instrument panel separate the PAB module’s airbag wiring harness connector
clip from the safety airbag’s PAB side one.
b. Remove M6 bolts and separate PAB module from instrument panel armed beam.
c. Remove the instrument panel itself.
d. Remove the M5bolts of two sides of four PAB modules.
5. Clock spring removal procedure
a. Remove DAB module (shut off the connecting connector clip)
b. Carefully remove the steer
c. Open the combined switch upper shield, find and shut off the bottom wring harness connector clip
d. Remove the clock spring from the steer
6. Driver’s side safety airbag module (DAB) and its installation procedure

Safety airbag-24
Figure 81
The removal of steering wheel (Figure 8.2)
Figure 82
7. Passengers’ side safety airbag module (PAB) and its installation procedure.
a. Test before installation
Carefully take PAB module, justify both of them and plug four trim cover M5bolt into the mounting holes of the module’s
both sides
Well install together the module with trim cover bracket and instrument panel mounting bracket with four M5 bolts.
After the installation of the entire instrument assembly to the vehicle, tightly fix the PAB module to the vehicle transverse
beam with 2 matted M6 bolts at the glove box site.
Well mutually plug the PAB module airbag wiring harness connector clip and safety airbag wiring harness PAB side
connector clip it is the end of PAB module installation.
b. Connection of accumulator terminal
c. Post-installation test
8. Clock spring installation procedure
a. Test before installation
Cross the line of upper clock spring through the hole in steer.
connect and fix the clock spring and steer
install the combined switch upper cover
install the steering wheel
steering wheel and safety module assembly
b. Connect accumulator’s terminal
c. Post-installation test

Safety airbag-25
Figure 8.3
d. Remove the steering wheel by removing the mounting screw from the mid-position. (Shut off the horn connector)
Caution
It is difficult to separate the steer from steering column due to the over meshing between spline and steering column,
in this case, do not forcibly remove the steer but screw off the bolt on the steering column and lift up the steer instead
(the forced removal will damage the clock spring since the connection between the steer and the spring)
Caution
Diagnose the safety airbag module circuit with electric diagnostic instrument without separating it.
Let the removed driver’s side safety airbag module bottom-side up and store it at a clean and dry place.
Store the clock spring in a clean and dry place.
9. Installation operation instructions
a. The test before installation
The new safety airbag or clock spring must be tested before installation.
Caution
The safety airbag module must be abandoned after its release according to the procedure
Connect the accumulator negative
Connect the K-431 diagnostic instrument with the diagnostic interface (16 plug)
Caution
Place the ignition switch in OFF place when connect or shut off the diagnostic instrument.
Place the ignition switch in ON position
Read the diagnostic circuit, check whether the safety airbag module is in normal condition except the failure regions.
Place the ignition switch in OFF position
Remove accumulator negative and wrap it with the tape for insulation.
Caution
Continue the operation 60 seconds after the removal of accumulator negative
Install the clock spring to the steer after its involution
Clock spring’s central involution, clockwise screw the clock spring to the end, then turn it for 3 circles anticlockwise and make
the involution with the marked sites

Safety airbag-26
Do the troubleshooting if the alarm lamp re-illuminates after its extinguishments following the 6-second-flashing (or it keeps
illuminating from the very beginning)
10. Test
a. Driver’s side airbag module test (Figure8-3)
Check the following items and replace the corresponding safety airbag module part with anything abnormal with a new one.
Abandon the safety airbag’s old parts after its release according to the instructed procedure.
Caution
Do not jam the clock spring wiring harness during the steering wheel and safety airbag module assembly installation.
After the installation, rotate the steering wheel to left and right positions as enough as possible to confirm whether something
abnormal is with it.
d. Post-installation test.
lightly rotate the steering wheel to the left and right to confirm whether something abnormal and noises will arise.(Driver’s side
safety airbag module, clock spring)
Place the ignition switch in ON place.
SRS alarm lamp flashes in 6 seconds and then extinguishes.
Caution
If without the clock spring central involution, the steering wheel will not be able to rotate at midway, or the clock spring
circuit will be damaged so that jeopardize SRS safety airbag’s normal activities.
The spacer must be removed after replacing a clock spring with a new one, otherwise it will damage the clock spring.
c. Steering wheel and safety airbag module assembly installation.
Install the steering wheel and safety airbag module assembly after clock spring’s central involution.
safety airbag system failure alarm lamp
Caution
The safety airbag module (squib) circuit resistance can even not be tested by the designated tester.
When testing the resistance with an experimental instrument, sometimes the improper release will be caused by the
static interference because of the current in explosion pipe and cause some major damaging accidents.
Whether depression, crack or deformation is with the shroud.
Whether the joint is broken and the terminal is deformed.
Whether depression, crack or deformation is with the gas generator shield.
Safety airbag module. Installation status.
Caution
Replace the safety airbag with depression, crack or deformation with a new one. Its old parts must be abandoned after
its release.

Safety airbag-15
Y esPr
esen t f
ailu re codes
R e plac e S R S saf ety airb ag system unit
S e e h e removal/ins talla tion ofS R
S
sa f ety airb ag system unit
Hi stor y a ccum ulated failu re code
s
T h e e nd offailur e d iagn osis4 Pl
ac e t he i gnition switch i nL O C K position
R e l eas e a ccum ulator negative wire and w ait f or 1 m inut
e
pl us
R e mo vethe l eft t rim c over
Sh ut off S R S safety airb ag system unit tran slat io
n
co nn ecto r cl ips
I n stal l b ack t he
accu mulato r n egativ e w ire, plac e t he
ig nition switch inON position
I s the p oten tial of S R S s afety a irba g s ystem u nit c
onne ctor
cl ip s s titc h 5 , 6( g roun ding ) a bove 9V
? No
R eplac e w irin g h arne ss
Drive side failure
Failure code
$9021
$9022
$9024
$9025
Driver’s side safety airbag failure (high or low resistance, shorting grounding, etc.)
Test
condition
Warning
If not correctly handled, the safety airbag module as well as pretension safety belt may possibly be trigged, released
and tensioned, thus make serene damage to people. Therefore, please carefully read the repairing warning before
trouble handling. Please take references in safety airbag system repairing warning
Driver’s side safety airbag
The resistance between the SRS safety airbag system connector clips connectors not within the designated scope
SRS safety airbag system driver’s side airbag relative wiring harness shorting or shutoff
Possible
causes
Driver’s side safety airbag module failure
Clock spring internal failure
Failure of circuit connector clips between clock spring and SRS safety airbag system electronic-control unit
Shutoff or shorting of wiring harness between clock spring and SRS safety airbag system electronic-control unit.
Misconnection of SRS safety airbag system driver’s side airbag generator connector clip
Procedure Test Operation
Normal Next step
1
Check the clock spring
Warning
If not correctly handled, the safety airbag module may possibly be
trigged and released thus make serene damage to people. Therefore,
please carefully read the repairing warning before trouble handling.
Please take references in safety airbag system repairing warning.
Are the relative parts of clock spring normal? (The relation between
stitches, unnecessary shutoff or shorting?) if the present clock spring can
be replaced by a better one.
Abnormal
Replace the clock spring
Take references in the
removal/installation for
safety airbag system and
clock spring
Can
Replace the driver’s side
safety airbag module
Take references in the
removal/installation for
driver’s side safety airbag
in safety airbag system
2
Confirm the failure in driver’s side safety airbag module or other parts.
Replace the DAB module with a better one
Install back accumulator negative wire
Place the ignition switch in ON position
Is the failure code still in display or can be debugged?
No Next step
Normal Next step
3
Check clock spring wiring harness connector clip
Place the ignition switch in LOCK position
Release accumulator negative wire and wait for 1 minute plus
Remove steering pillar shell
Release the clock spring connector clip, is it in normal condition? Abnormal Replace the wiring
harness

Safety airbag-16
Yes Next step
4 Confirm the failure in clock spring or other parts
configure the special tools fuel and t emperature diagnostic instrument
at 2Ω position
Install back the accumulator negative wire
Place the ignition switch in ON place
Any failure code in display? No Replace clock spring
Take references in the removal
and installation for safety airbag
system and clock spring.
Nor mal Replace SRS safety airbag
system unit; take references in
removal/installation of SRS
safety airbag system unit.
5 Check the wiring harness between clock spring and SRS safety airbag
system electronic-control unit
Place the ignition switch in LOCK position
Release accumulator negative wire and wait for 1 minute plus
Remove PAB trim cover, glove box (passengers’ side safety airbag is
under the trim cover)
Release the passengers’ side safety airbag module connector clip
Release all SRS safety airbag system unit connector clips
Check whether the following troubles are with the harness between
connector clips terminals of SRS safety airbag system unit and clock
spring
Grounding
Power-supply shorting
Shutoff
Is the previous wiring harness normal? Abnormal Replace the wire harness
Nor mal Next step
6 Check the clock spring connector clip
Remove the steering pillar shell
Release the clock spring connector clip
Is the clock spring connector clip normal? Abnormal Replace the wiring harness or
connector clips

Nor mal Next step
7 Check clock spring
Remove clock spring
Take references in removal/installation of safet y airbag system as
well as clock spring
Check clock spring
Take references in the test for safety airbag system and clock spring.
Is the clock spring normal? Abnormal Replace clock spring
Take references in the
removal/installation of safety
airbag system and clock spring.
Nor mal Next step
8 Check the wiring harness between clock spring and SRS safety airbag
system electronic-control unit
Place the ignition switch in LOCK position
Release accumulator negative wire and wait for 1 minute plus
Remove PAB trim cover, glove box (passengers’ side safety airbag is
under the trim cover)
Release the passengers’ side safety airbag module connector clip
Release all SRS safety airbag system unit connector clips.
Check whether the following troubles are with the harness between
connector clips terminals of SRS safety airbag system unit and spring
clock.
Grounding
Power-supply shorting
Shutoff
Is the previous harness normal? Abnormal Replace clock spring
Take references in the
removal/installation of safety
airbag system, and clock spring

Safety airbag-18
Nor mal Present failure code
Replace SRS safety airbag system
unit
Take references in
removal/installation of SRS
safety airbag system unit in safety
airbag system.
History-accumulated failure
codes
The end of failure diagnosis
4 Check the wiring harness between passengers’ side safety airbag
module and SRS safet y airbag system electronic-control unit
Place the ignition switch in LOCK position
Release accumulator negative wire and then wait for about 1
minute plus
Remove steering pillar shell
Release clock spring connector clip
Release driver’s and passengers’ side safety airbag module
connector clips
Release all SRS safety airbag system unit connector clips
Check whether the following troubles are with the circuit of the
connector clips terminals between SRS safety airbag system
electronic-control unit and passengers’ side safety airbag
module
Grounding
Power-supply shorting
Shutoff
Is the previous circuit normal? Abnormal Replace the relative wiring
harness
Impact-vehicle diagnosis
Test SRS-ECU diagnostic signals
1. Connect the (X-431 diagnostic test’s) diagnostic joint
2. Read the diagnostic results with X-431 diagnostic tester
Repairing procedure
1.When safety airbag is released.
The following parts should be replaced with new ones
a. Passengers’ side safety airbag module
b. SRS-ECU
c. Driver’s side safety airbag module
2 Check the following parts; replace them with new ones providing something wrong with them.
a. Clock spring
b. Steering-wheel, steering column, bottom steering shaft module
3.Driver’s side safety airbag module’s installation status towards the steering wheel.
a. Check whether abnormal knocking is with the steering wheel, its activity is in good condition and its clearance is normal.
b. Check whether the wiring harness joint is broken and its terminal is deformed.
Caution: Due to the impact, the diagnostic instrument cannot communicate with SRS-ECU when accumulator is lack of
power, in this case, check and maintain the instrument panel wiring harness or utilize the extension power supply.