ECU GREAT WALL FLORID 2008 Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 227Airbags
Removal Method for Individual Components
SRS airbag system electronic control component (SRS-ECU)
1. Areas of Importance
(a) After taking off the battery's negative (-) terminal, wait for 60 s before operating. Wrap the removed
negative (-) terminal in tape to insulate it.
(b) The SRS-ECU can not be dismantled or repaired. If there is any malfunction, please replace it with a new
one.
(c) Do not let the SRS-ECU vibrate or collide with anything. If sunken or depressed, cracked, deformed, etc.,
please replace with a new SRS-ECU.
(d) Every time the airbag is deployed, please replace with a new SRS-ECU.
(e) Do not knock the SRS-ECU while removing or performing maintenance on the SRS-ECU's surrounding
components.
2. Operation before removal
(a) Set the ignition switch to the LOCK position.
(b) After taking off the battery's negative (-) terminal, put them in a proper place or wrap them in\
tape.
3. Removal sequence
(a) Remove the auxiliary facia console.
(b) Reomve the connectors connected with the airbag ECU.
(c) Remove the SRS-ECU.
4. Installation sequence
(a) SRS-ECU.
(b) Install the connectors connected with the airbag ECU.
(c) Dashboard base.
(d) Connect the battery's negative (-) terminal.
5. Installation points
(a) Install the SRS-ECU
Caution: If SRS-ECU isn't installed correctly, the SRS airbag will not operate properly.
(b) Inspection after installation
• Set the ignition switch to the ON position.
• SRS warning lamp stays on for 6-7 s.
• If the lamp does not turn off, malfunction inspection and troubleshooting should be performed.
6. Inspection
(a) Whether the SRS-ECU cover has sunken or depressed, cracked, deformed, etc.
(b) Whether the connectors are damaged or deformed.
Caution: Please replace with a new SRS-ECU, if there is any sunkeness or depression, cracking, de-
formity, etc.
Except for the areas described above, to perform SRS-ECU inspections, please refer to the related troubleshooting
contents.

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Driver Side Airbag Module (DAB), Front Passenger Side Air-
bag Module (PAB), Clock Spring, and Steering Wheel
Areas of Importance
1. Take off the battery's negative (-) terminal, and wait for 60 s before operating. Wrap the removed
negative (-) terminal in tape to insulate it.
2. The airbag module and clock spring must not be dismantled or repaired. If there is any malfunction,
replace the part.
3. Pay attention to the usage of the airbag module and clock spring. Do not drop it or immerge it in water
or oil. Furthermore, if there is any sinking or depression, cracking, deformity, etc., please replace it
with a new part.
4. Make sure the extended surface is faced upwards when the airbag module is to be deployed. Put it on
a flat surface and do not place anything on top of it.
5. Do not put the airbag module in a place where the temperature is over 93\
oC.
6. After the airbag module is deployed, replace it with a new one. At the same time, inspect the clock
spring (contact resistance between corresponding terminals should not be more than 0.8 Ω). If there
is anything abnormal, replace it with a new one.
7. Use gloves and protective glasses while operating on a deployed airbag.
8. While scraping an undeployed airbag, make sure to discard it after it ha\
s been deployed first.
9. During removal, to avoid experiencing static electricity interference leading to faulty execution, make
sure to remove the other wire harness connectors after the DAB and PAB module wire harness
connectors have been removed. Installation is done in reverse order.
Driver side front airbag, steering wheel, and clock spring removal
1. Operation before removal
(a) When the steering wheel and front tires are pointing straight ahead, take out the ignition swit\
ch.
(b) Disconnect the battery's negative (-) terminal.
2. Driver side airbag module removal sequence
(a) Loosen the screws on both sides.
(b) Lightly pick up the airbag module.
(c) Disconnect the wire harness plug-in which is plugged into the airbag module.
(d) Remove the driver side airbag module.
(e) Remove steering wheel mounting bolt on the steering column.
(f) Remove the steering wheel.
3. Clock spring removal sequence (after steering wheel removal is complete\
d)
(a) Lightly remove the steering wheel (please refer to the areas of importance).
(b) Open the combination switch's upper and lower protective cover, find and disconnect the wire harness connector
at lower end.
(c) Remove the clock spring.
Driver side front airbag, steering wheel, and clock spring installation
1. Clock spring installation sequence
(a) Inspection before installation.
This operation requires the inspection of the front tires to make sure they are first pointed straight ahead. If they
are not, be sure to place them in the right position first.
• Install the clock spring onto the steering column.
• Firmly wedge the clock spring to the steering column.
• Install the dashboard wire harness under the clock spring.
• Install the combination switch hood.
(b) Inspection after installation.
2. Steering wheel installation sequence (after clock spring installation i\
s completed)
(a) Pull out the clock spring's position pin.
(b) Install the steering wheel, making sure to insert the wire above the clock spring through the hole on the
steering wheel body.
(c) Tighten the steering wheel mounting nuts.

Downloaded from www.Manualslib.com manuals search engine 229Airbags
3. Driver side airbag module installation sequence (after steering wheel i\
nstallation is completed)
(a) Install the horn's wire harness.
(b) Install the airbag module executing equipment's (gas generator) wire harness.
(c) Place the airbag module onto the steering wheel's proper installation position (avoid heavy knocking while
placing).
(d) Tighten the airbag module mounting bolt.
(e) Connect the battery's negative (-) terminal.
(f) Inspection after installation.
Auxiliary airbag removal and installation
1. Auxiliary airbag removal
(a) Remove the glove box.
(b) Pull out the dashboard wire harness and the auxiliary airbag wire harness connectors.
(c) Remove the airbag mounting bolt.
(d) Remove the upper dashboard.
(e) Remove the auxiliary airbag's two mounting nuts.
(f) Press the buckle and remove the auxiliary airbag.
2. Installation sequence for the auxiliary airbag is reverse to the removal\
sequence.
Caution: Please do not place anything on the auxiliary airbag, as to avoid accidents while deploying
the airbag.
Operation essentials
1. Driver side airbag and steering wheel removal
Caution: The following operations should only be performed after the battery's negative (-) terminal
has been disconnected, and after the ignition switch key has been pulled\
out for 60 s.
(a) Remove the mounting screws from the two holes under the steering wheel bottom cap, and lightly pick up
the driver side airbag module.
(b) Pull out the deployed airbag module's wire harness and the horn line, and remove the airbag module\
.
Attention: Diagnose the airbag module's circuit with an electrical measuring instruments but do not
dismantle it. Face the bottom of the removed passenger side airbag upwards and store it in a clean
and dry place.
(c) Remove the steering wheel mounting bolt on the steering column.
Caution: Due to the over-tight occlusion of the spline and column, the steering wheel and steering
column may be hard to separate, in which case make sure not to use force to remove the steering
wheel. The correct method is to tighten the screw into the column just a bit, and then pull up the
steering wheel (because the steering wheel bottom is connected to the clock spring, if force is used to
remove it, it may damage it).
2. Clock spring removal
(a) After steering wheel removal is completed, remove the combination switch hood.
(b) Pull out the dashboard wire harness connectors under the clock spring.
(c) Take off the clock spring.
Caution: Store the removed clock spring in a clean and dry place.
3. Installation notes
(a) Inspection before installation, inspection of driver side airbag module.
(b) Inspect the new airbag or clock spring before installing them.
4. Driver side airbag module inspection
Inspect each of the following items. If any faults are found, replace with a new corresponding airbag module
part. Discard the old components after they have been deployed in the pr\
oper order.
(a) Whether the cover sunken or depressed, cracked, or deformed.
(b) Whether the wire harness has broken connectors and deformed terminals.
(c) Whether the gas generator's housing is sunken or depressed, cracked, or deformed.
(d) Airbag module installation status.
Caution: The specified measuring instrument cannot measure the airbag module (tube rupture) circuit
resistance. Test the resistance with a testing instrument. There is an electric current in the tube rup-
ture which may lead to accidental deployment due to static electricity a\
nd cause serious accidents.
5. Clock spring inspection
Inspect each of the following items. If any fault is found, replace with\
a new clock spring.

Downloaded from www.Manualslib.com manuals search engine 231Airbags
Driver side airbag module
Wi r e h a r n e s s u s e d for deployment
Old tire with no hub
Wire harness used for deployment
Wire harness used for deployment
Wire harness used for deploymentShort circuit area
Longer than 6 m
4. Deploy the wire harness after removing the No. 2
connector of the clock spring.
Prepare two wire harnesses longer than 6 m for deployment,
and connect one of their ends together (to short circuit).
Caution: When deploying the airbag, make sure to
maintain a distance of at least 6 m away from objects
or people, and perform the deployment on a flat sur-
face. While deploying the airbag module outdoors,
avoid strong winds, and ignite it against the wind.
8. Place three old tires with no hub on the tires which are
used to fix in place the driver side airbag module (shown
on the left).
9. Cut off the connection of the driver side airbag module's
wire harness which is used for deployment at a place as
far away from the vehicle as possible and connect it to
the two terminals removed from the vehicle battery, caus-
ing it to deploy (shown on the left).
Caution: Deploy it only after ensuring that there are no
people around the airbag module. After the deployment
of driver side airbag module, the gas generator will be ex-
tremely hot. Continue to use it only after 30 min cooling.
10. Discard the deployed driver side airbag module accord-
ing to the discarding essentials.
5. Insert the airbag deployment wire harness into the
airbag execution device.
6. Install the unused bolts on the driver side airbag
module's inner side bolts, and bound the wheel rim with
a thick metal wire, so as to set the wheel rim in place.
7. Connect the wire harness used for deployment which is
connected with the driver side airbag module with the
lower part of the old tire which is used for installing the
wheel rim. Upwardly fix the driver side airbag module
with the metal wire which is connected to the bolt
(shown on the left).

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Airbag’s Diagnostic Methods Without a Diagnostic Scanner
Airbag indicator lamp warning
Check the airbag ECU connectors for looseness, check for warnings after correct installation.
Inspect whether the clock spring is conducting
Go to a professional maintenance station to perform inspection
Disconnect the front passenger side seat belt pretensioner wires and replace it with a 2 Ω resistor to see whether airbag warning lamp is still on.
Disconnect the driver side seat belt pretensioner wires and replace it with a 2 Ω resistor to see whether airbag warning lamp is still on.
Disconnect the front passenger side airbag line and replace it with a 2 Ω resistor to see whether airbag warning lamp is still on.
D i s c o n n e c t t h e d r i v e r s i d e a i r b a g l i n e a n d replace it with a 2 Ω resistor to see whether airbag warning lamp is still on.
Check whether the alarm continues after replacing the clock spring
No
No
No
No
NoNo
Yes
Yes