Haima 7. Electrical System of Body. Service Manual

Audio system

T-39

Assembly method:

Insert all connectors behind the audio host and
the A/C controller;

Before the audio and A/C controller assemblies
are fit into the dashboard, it is recommended to
check  first  whether  all  parts  are  operating
normally  (audio,  Radio,  A/C  compressor
operation, air volume and mode);

Install the audio host and tighten the screws;

Insert  the  adapter  cable  plug  behind  the  audio
panel,  and  place  the  panel,  aiming  the  panel
snap at the slot on the dashboard, tap clockwise
the snap on the panel from the left upper angel;

Install the A/C controller and tighten the
screws;

Install the panel of A/C controller, and tap
clockwise the snap on the panel from the left
upper angel.

Removal/installation of 4D loudspeaker

1. Remove the negative cable of battery;

2. Remove 4D inner trim panel;

3. Remove the screws;

4. Disconnect the connectors of 4D loudspeaker

and remove them.

The installation procedure is in reverse order
with that of the removal.

Check of 4D loudspeaker

1． Remove 4D loudspeaker;

2． Check, with an ohmmeter, the resistance

between the terminals of loudspeaker. Replace
the front door loudspeaker if it fails to meet the
technique requirements.

Removal/installation of antenna

1. Disconnect the negative cable connection of

battery;

2. Remove the front side trim panel at the driver

side;

Disconnect the antenna socket on roof;

Removal/installation of the signal line of
front antenna

1. Remove the negative cable of battery;

2. Remove the audio unit;

3. Remove the front side trim panel at the

occupant side;

4. Disconnect the connection between antenna on

roof and the signal line of front antenna;

5. Remove as per the following order. The

installation procedure is in reverse order with
that of removal.

4D loudspeaker

Screws

Joint

Element side connector

(viewed from the terminal

side)

Testing conditions

Resistance

Terminal

Under any conditions

Antenna feeder

Roof antenna plug

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HI-FI System

T-40

Clamp

Signal line of front antenna

Check of the signal line of front antenna

Remove the audio unit;

Remove the side panel of instrument panel at
driver side;

Disconnect the connection between the signal
lines of front/rear antennae;

Confirm by use of an ohmmeter that there is no
continuity between the signal line terminals A
and B of front antenna;

Confirm by  use  of  an  ohmmeter the  continuity
between  the  signal  line  terminals  of  front
antenna;  replace  the  dashboard  harness  if  it
fails to meet the technique requirements

Removal/installation of signal line of rear
antenna

1. Remove the negative cable of battery;

2. Remove the audio unit;

3. Remove the inner trim panel on the

occupant-sided column A;

4. Remove the roof lining;

5. Disconnect the connection between the signal

lines of front/rear antennae;

6. Remove in the order indicated in the Table;

7. The installation procedure is in reverse order

with that of the removal.

Screws

Clamp

Signal line of rear antenna

Steps

Terminal

: Continuity

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Audio system

T-43

arts relevant to the safety airbag

The fault indicator, located in the combination instrument and in red color, is
designated to indicate the state of SRS airbag system.

PFAB passenger side front row airbag module, located below the dashboard and in
front of the front passenger, is designated to pop up the airbag for the front
passenger protection in case of collision.

DFAB driver side front airbag module, located in middle of the steering wheel, is
designated to pop up the airbag for the front driver protection in case of collision.

CLOCK SPRING, located below the steering wheel, is designated to connect the
buttons of DFAB, horn and steering wheel etc., with the main harness.

ECU controller of safety airbag, located on the central aisle below the dashboard, is
designated to control airbag system ignition and test the state of overall system.

Fault check of safety airbag

After  the  ignition  switch  set  from  OFF  to  ON  (this
operation  step  hereafter  referred  to  turn  on  the
power  supply  switch),  the  fault  indicator  of  safety
airbag  will  go  off  and  not  lighten  up  anymore  after
lit  for  6s.  This  means  that  the  airbag  system  is  in
normal state and no maintenance of airbag system is
required under such condition.

If the status indicator of safety airbag is not lit, or
keeps lit constantly and flashed etc, after the power
supply is turned on, it means there is a failure in the
airbag system and the maintenance of airbag system
is necessary.

Fault judgement of safety airbag

Read  out  fault  log  of  airbag  system  by  use  of  a
diagnostic  apparatus.  For  use  of  the  diagnostic
apparatus,  please  refer  to  the  Use  Instructions  of
diagnostic apparatus.

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Safety airbag system

T-44

Faults table of safety airbag system

B1301

ECU internal fault,

B1302

Power supply voltage too high

B1303

Power supply voltage too low

B1304

Driver-sided airbag resistance high

B1305

Driver-sided airbag resistance low

B1306

Driver-sided airbag short-circuited with the grounding

B1307

Driver-sided airbag short-circuited with the power supply

B1308

High airbag resistance of front seat occupant

B1309

Low airbag resistance of front seat occupant

B1310

Airbag of front seat occupant short-circuited with the grounding

B1311

Airbag of front seat occupant short-circuited with the power supply

B1312

High pre-tensioner resistance of driver safety belt

B1313

Low pre-tensioner resistance of driver safety belt

B1314

Pre-tensioner of driver safety belt short-circuited with the grounding

B1315

Pre-tensioner of driver safety belt short-circuited with the power supply

B1316

High pre-tensioner resistance of the safety belt of front seat occupant

B1317

Low pre-tensioner resistance of the safety belt of front seat occupant

B1318

Safety belt pre-tensioner of front seat occupant short-circuited with the grounding

B1319

Safety belt pre-tensioner of front seat occupant short-circuited with the power supply

B1320

Fault indicator short-circuited with the grounding or not connected.

B1321

Fault indicator short-circuited with the power supply

B1322

Wrong setting

B1324

Occupant airbag switch short-circuited with the grounding

B1325

Abnormal resistance of occupant airbag switch.

B1326

Occupant airbag switch short-circuited with the power supply or open-circuited

B1327

Off-indicator of occupant airbag short-circuited with the grounding or the circuit
disconnected

B1328

Off-indicator of occupant airbag short-circuited with the power supply

Others

Other faults

Maintenance procedure of safety airbag

Fault indicator not lit after the power supply
turned on

1) Whether the fault log can be read out through

the diagnostic apparatus.

Yes: To the step (3)

No: To the step (2)

Check  whether  the  restraint  indicator  of
occupant  airbag  displays  ON  in  condition  that
the  occupant  airbag  indicator  switch  is  in  the
On  position,  and  lit  after  the  power  supply
turned on and gone off in 4s.

Yes: Check the diagnostic interface and
relevant harness.

No: Replace the safety airbag controller.

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Safety airbag system

T-45

3) Handle as per the following fault log.

Fault indicator constant on

1) Whether the fault log can be read out through

the diagnostic apparatus.

Yes: To the step (2)

No: To the step (3)

2) When the fault reason read out, take disposal as

per the method in the following fault log:

3) Check whether the safety airbag fuse, relevant

power supply harness are normal or not.

4) Check whether the controller connector of

safety airbag is normal.

Fault indicator flashing

Read out through the airbag fault diagnostic
apparatus, the fault log and dispose as per the
method in the following fault log.

There is an ECU internal fault in the fault log.

Replace the controller of safety airbag

Power supply too low or high in fault log Test
the power supply system of vehicle

There are driver airbag malfunctions in the
fault log (resistance low/high, short-circuited
with the grounding, or with the power supply).

1) Low resistance

(1) Pull out the driver airbag module to test

whether the fault disappeared.

Yes: Replace the driver airbag module

No: To the step (2)

(2) Pull out, below the clock spring, the harness

connector wrapped in middle with the yellow,
to test whether the fault disappeared.

Yes: Replace the clock spring

No: To the step (3)

(3) Replace the controller of safety airbag, to test

whether the fault disappeared.

(4) Check whether there are any short-circuits

occurred between the harnesses; pay attention
to the short-circuit ring in the connector in
connection with the controller.

2) High resistance

(1) Check whether the connectors between the

driver airbag module and clock spring, between
the clock spring and harness and between the
harness and controller of safety airbag
controller are plugged in place.

(2) Check whether the resistance between the

upper/lower cables of clock springs is less than
2 ohms.

Yes: To the step (2)

No: Replace the clock spring.

(3) Replace the driver airbag module to test

whether the fault disappeared.

(4) Replace safety airbag controller to test whether

the fault disappeared.

(5) Test break-circuit occurred in the harness.

3) Short-circuited with the grounding or with the

power supply

(1) Replace clock spring to test whether the fault

disappeared.

(2) Replace driver airbag module to test whether

the fault disappeared.

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Test whether there is any short-circuit in the

harness.

(5) Occupant airbag faults in the fault log

(Low/high resistance, short-circuited with the
grounding or with the power supply)

Low resistance

(1) Pull out the driver airbag module to test

whether the fault disappeared.

Yes: Replace driver airbag module

No: To the step (2)

(2) Pull out, below the clock spring, the harness

connector wrapped in middle with the yellow,
to test whether the fault disappeared

Yes: Replace clock spring

No: To the step (3)

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Check whether there are any short-circuits

occurred between the harnesses. Pay attention
to the short-circuit ring in the plug in
connection with the controller.

2) High resistance

(1) Check whether the connectors between the

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Safety airbag system

T-46

driver airbag module and clock spring, between
the clock spring and harness and between the
harness and controller of safety airbag
controller are plugged in place.

Check whether the resistance between the
upper/lower cables of clock spring is less than
2 ohms.

Yes: To the step (2)

No: Replace clock spring.

Replace driver airbag module to test whether
the fault disappeared.

Replace safety airbag controller to test whether
the fault disappeared.

Test the break-circuit occurred in the harness.

3) Short-circuited with the grounding or with the

power supply

(1) Replace clock spring to test whether the fault

disappeared.

(2) Replace driver airbag module to test whether

the fault disappeared.

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Test whether there is any short-circuit in the

harness.

Occupant airbag faults in the fault log
(Low/high resistance, short-circuited with the
grounding or with the power supply)

1) Low resistance

(1) Pull out the driver airbag module to test

whether the fault disappeared.

Yes: Replace driver airbag module

No: To the step (2)

(2) Pull out, below the clock spring, the harness

connector wrapped in middle with the yellow,
to test whether the fault disappeared

Yes: Replace clock spring

No: To the step (3)

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Check whether there are any short-circuits

occurred between the harnesses. Pay attention
to the short-circuit ring in the plug in
connection with the controller.

2) High resistance

(1) Check whether the connectors between the

driver airbag module and clock spring, between
the clock spring and harness and between the
harness and controller of safety airbag
controller are plugged in place.

(2) Check whether the resistance between the

upper/lower cables of clock springs is less than
2 ohms.

Yes: To the step (2)

No: Replace clock spring.

(3) Replace driver airbag module to test whether

the fault disappeared.

(4) Replace safety airbag controller to test whether

the fault disappeared.

(5) Test the break-circuit occurred in the harness.

Short-circuited with the grounding or with the
power supply

(1) Replace clock spring to test whether the fault

disappeared.

(2) Replace driver airbag module to test whether

the fault disappeared.

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Test whether there is any short-circuit in the

harness.

Occupant airbag faults in the fault log
(Low/high resistance, short-circuited with the
grounding or with the power supply)

Low resistance

(1) Pull out the driver airbag module to test

whether the fault disappeared.

Yes: Replace driver airbag module

No: To the step (2)

(2) Pull out, below the clock spring, the harness

connector wrapped in middle with the yellow,
to test whether the fault disappeared.

Yes: Replace clock spring

No: To the step (3)

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Check whether there are any short-circuits

occurred between the harnesses. Pay attention
to the short-circuit ring in the plug in
connection with the controller.

2) High resistance

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Safety airbag system

T-47

(1) Check whether the plugs between the driver

airbag  module  and  clock  spring,  between  the
clock  spring  and  harness  and  between  the
harness  and  controller  of  safety  airbag
controller are plugged in place.

(2) Check whether the resistance between the

upper/lower cables of clock springs is less than
2 ohms.

Yes: To the step (2)

No: Replace clock spring.

(3) Replace driver airbag module to test whether

the fault disappeared.

(4) Replace safety airbag controller to test whether

the fault disappeared.

(5) Test the break-circuit occurred in the harness

3) Short-circuited with the grounding or with the

power supply.

(1) Replace driver airbag module to test whether

the fault disappeared.

(2) Replace safety airbag controller to test whether

the fault disappeared.

(3) Test whether there is any short-circuit in the

harness.

Any  pre-tensioner  faults  of  safety  belt  in  the
fault  log  (Low/high  resistance,  short-circuited
with the grounding or with the power supply)

1) Low resistance

(1) Pull out the airbag module at the driver side to

test whether the fault disappeared.

Yes: Replace driver airbag module

No: To the step (2)

(2) Pull out, below the clock spring, the harness

connector wrapped in middle with the yellow,
to test whether the fault disappeared.

Yes: Replace clock spring

No: To the step (3)

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Check whether there are any short-circuits

occurred between the harnesses. Pay attention
to the short-circuit ring in the plug in
connection with the controller.

2) High resistance

(1) Check whether the plugs between the driver

airbag module and clock spring, between the

clock  spring  and  harness  and  between  the
harness  and  controller  of  safety  airbag
controller are plugged in place..

(2) Check whether the resistance between the

upper/lower cables of clock springs is less 2
ohms..

Yes: To the step (2)

No: Replace clock spring.

(3) Replace driver airbag module to test whether

the fault disappeared.

(4) Replace safety airbag controller to test whether

the fault disappeared.

Test the break-circuit occurred in the harness.

3) Short-circuited with the grounding or with the

power supply.

Replace the airbag module at the driver side to
test whether the fault disappeared.

Replace safety airbag controller to test whether
the fault disappeared.

Test whether there is any short-circuit in the
harness.

10. Any failures relevant to the fault indicator in

the fault log (short-circuited with the grounding
or not connected, short-circuited with the
power supply)

1) Short-circuited with the grounding or not

connected

(1) Check whether the connectors of the

combination instrument and harness and those
of safety airbag controller and harness are
normally connected.

(2) Replace combination instrument to test

whether the fault disappeared.

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Test the break-circuit of the circuits relevant to

the fault indicator in the harness.

2) Short-circuited with the power supply

(1) Replace combination instrument to test

whether the fault disappeared.

(2) Replace safety airbag controller to test whether

the fault disappeared.

(3) Test the short-circuit of the circuits relevant to

the fault indicator in the harness.

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Safety airbag system

T-48

11. There is “Setting Errors” fault in the fault log.

Please check if the ECU type is correct.

12. In the fault log, there are faults relevant to the

occupant  side  airbag  switch  (short-circuited
with  the  grounding,  abnormal  resistance,
short-circuited  with  the  power  supply  or
self-open-circuited)

1) Short-circuited with the grounding

(1) Replace safety airbag controller to test whether

the fault disappeared.

(2) Test if there is any short-circuit of the circuits

relevant to the occupant side airbag switch in
the harness or not.

2) Abnormal resistance

(1) Remove the occupant side airbag switch to

check whether the resistance is 100 or 400
ohms.

Yes: To the step (2)

No: Replace the occupant side airbag switch

(2) Replace safety airbag controller to test whether

the fault disappeared.

(3) Test whether there is any abnormal connection

of circuits relevant to the occupant side airbag
in the harness or not.

3) Short-circuited with the power supply or self

open-circuited

(1) Test whether the connectors between the

occupant side airbag switch and harness,
between the harness and safety airbag
controller are in normal connection or not.

(2) Remove the occupant side airbag switch to test

whether the resistance is 100 or 400 ohms.

Yes: To the step (3)

No: Replace the occupant side airbag switch

(3) Replace safety airbag controller to test whether

the fault disappeared.

(4) Test the open-circuit in the circuits relevant to

the occupant airbag switch in the harness.

13. Any faults relevant to the Off-indicator light of

occupant airbag in the fault log (short-circuited
with the grounding or circuit disconnected,
short-circuited with the power supply)

1) Short-circuited with the grounding or circuit

disconnected

(1) Replace combination instrument to test

whether the fault disappeared.

(2) Replace safety airbag controller to test whether

the fault disappeared.

(3) Test the break-circuit relevant to the indicator

light of occupant side airbag or the vehicle
grounding in the harness.

2) Short-circuited with the power supply

(1) Replace combination instrument to test

whether the fault disappeared.

(2) Replace safety airbag controller to test whether

the fault disappeared.

(3) Test any grounded power supply of the circuits

relevant to the Off-indicator light of occupant
airbag in the harness.

14. Other faults

Replace the safety airbag controller and get in
contact with the automobile manufacturer or
airbag producer.

Vehicle disposal procedure of airbag effect

In maintenance of a vehicle, on which a collision
has occurred, and the airbag has taken effect, please
follow these steps as below:

1. Record the VIH number, VIN, time of accident,

accident location, occupant contact, accident
circumstances etc.

If possible, take photos as record of the safety
airbag, vehicle collision, underbody and scene
of accident.

Feed back the record to the automobile
manufacturer or safety airbag producer.

The maintenance can be carried out only after
approved by the owner

1) The following parts have to be replaced:

Driver airbag module

Occupant airbag module

Driver safety belt

Occupant safety belt at the front seat

Safety airbag controller

Clock spring

2) Parts possibly necessary for replacement

Harness

Dashboard

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Safety airbag system

T-49

The  replaced  module  shall  be  handled  as  per
“VIII.  Disposal  Procedure  of  Obsolete  Safety
Airbag Module”

Disassembly/assembly of each part of
safety airbag

Warning::

After Disconnected the electrode wire of battery, the
harness connector of safety airbag controller (ECU)
can be removed at least in 15mins, for other parts, it
shall wait at least for 2mins, otherwise it will result
in wrong detonation of safety airbag.

Warning:

The removed safety airbag module has to be
destroyed prior to discard.

Please refer to the “Disposal Procedure of Obsoleted
Safety Airbag Module” for the method of disposal.

Removal/installation of

safety

airbag

module at the driver side

Remove the negative cable of battery;

Dismantle  the  main  safety  airbag  module.
Remove  two  bolts  M6  fixing  the  main  safety
airbag  module  behind  the  steering  wheel.  The
tightening  torque  for  reassembly  of  screw  is  8
N.m.

Take out the main safety airbag module from
the steering wheel. Pull out the double-hole
harness connector behind the airbag module.

Warning:

The airbag  module shall be  kept  facing upward. No
objects  are  allowed  to  be  placed  on  the  airbag
module,  and  where,  the  airbag  module  shall  be
placed  away  from  high  temperature,  heat  radiation
and  vibration. Never try to open or repair the airbag
module.  Do  not  measure  by  use  of  a  multimeter  or
let the current flow into the airbag module.

Reassemble all parts in reverse order.

Disassembly/assembly of clock spring

Screws

Clock spring

See the Essentials to Installation of Clock
Spring

Connector

Remove the negative cable of battery;

Dismantle the main safety airbag module.
Please refer to the “Disassembly and Assembly
of Driver Airbag Module.

Pull out all connectors connecting the clock
spring in the steering wheel.

Dismantle the fixing nuts of steering wheel.
Tightening torque for fixing nuts of steering
wheel during reassembly: 25 N.m

Align  the  steering  wheel  with  the  center  and
keep it at  the locked position and then  take out
steering wheel.

Dismantle all fixing screws of upper/lower
covers on the steering column and take out the
lower cover.

Pull out all connectors connecting the lower
end of clock spring.

Remove three screws fixing the clock spring.

Take out the clock spring from the steering
wheel.

Warning: Prior to the installation, be sure that
the clock spring is located at the center.

10. Central alignment with the clock spring

1) The lock pin can be removed only after the

clock spring has been installed.

2) The clock spring without the location pin can

be installed only after aligned with the center;

(1) Turn clockwise to the extreme position (until it

cannot be turned any further)

(2) Turn counterclockwise about 2.75 circles until

aimed at the arrow on the clock spring.

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Safety airbag system

T-50

11. Reassemble the rest of parts in the reverse

order.

Essentials to installation of clock spring

Attention

If failure to adjust the clock spring, the wire of clock
spring will be broken due to excessive tension when
turning the steering wheel. It should be adjusted
after the clock spring has been installed.

Adjustment of clock spring

Note: The adjustment process has been also
described on the warning label of clock spring.

Keep the front wheels straight forward by
turning the steering wheel.

Attention: If too tightly wrapped, the clock spring
will be damaged. Do not forcibly turn the clock
spring.

Turn clockwise the clock spring until it
stopped.

3. Turn counterclockwise the clock spring for 2

and 3/4 circles.

Align the mark on the clock spring with that of
the outer ring.

Removal/installation of the safety airbag
module at the occupant side

Warning:

The harness connectors of safety airbag computer
(ECU) can be removed at least in 15mins after the
electrode wire of battery has been disconnected.

For  the  other  parts,  it  shall  wait  at  least  for  2min,
otherwise,  it  will  result  in  wrong  detonation  of
safety airbag.

The replaced safety airbag module shall be handled
as per “VIII. Disposal Procedure of Obsolete Safety
Airbag Module”.

Remove the negative cable of battery

Remove the sundries bin on the occupant side
dashboard.

3. Pull out a yellow double-hole harness

connector behind the auxiliary safety airbag
module.

4. Remove two nuts (M6) fixing the auxiliary

safety airbag module. The tightening torque for
reassembling the nuts: 8 N.m.

Align with the mark

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Safety airbag system

T-51

Take out auxiliary safety airbag module from
the vehicle.

Warning:

The airbag  module shall be  kept  facing upward. No
objects  are  allowed  to  be  placed  on  the  airbag
module,  and  where,  the  airbag  module  shall  be
placed  away  from  the  high  temperature,  heat
radiation  and  vibration.  Never  try  to  open  or  repair
the  airbag  module.  Do  not  measure  by  use  of  a
multimeter  or  let  the  current  flow  into  the  airbag
module.

Reassembly all parts in reverse order.

Disassembly/assembly of safety airbag
computer (ECU)

Warning:

The  harness  connectors  of  safety  airbag  computer
(ECU)  can  be  removed  at  least  in  15mins  after  the
electrode wire of battery has been disconnected. For
the  other  parts,  it  shall  wait  at  least  for  2min,
otherwise,  it  will  result  in  wrong  detonation  of
safety airbag.

When removing the safety airbag computer,
attention shall be paid not to let it fall down or crash,
otherwise it will result in failure of computer.

Remove the negative cable of battery;

Remove the baffle on the central aisle
underneath the dashboard.

Remove the harness connector of the SRS
module.

Remove 3 screws fixing the SRS module.

The tightening torque for reassembling the
screw: 8 N.m.

Reassemble all parts in reverse order..

Warning for maintenance

Disassembly of part

Disassembly  and  reassembly  of  the  safety  airbag
system parts  may result in the system failure, and in
case  of  an  accident  it  may  cause  serious  personnel
injury or even death. Thus, do not try to disassemble
any parts of safety airbag system

Repair of harness

The  improper  maintenance  and  operation  made  on
the harness of safety airbag system may accidentally
release  the  safety  airbag  or  the  pretensioning  safety
belt,  which  will  cause  serious  personnel  injury.  If
any  faults  found  in  the  system  harness,  replace
harness instead of repair.

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Safety airbag system

T-52

Check of safety airbag module

The  safety  airbag  module  checked  with  an
ohmmeter may cause the safety airbag to release and
result  in  serious  personnel  injury.  Hence,  do  not
check  the  safety  airbag  module  by  use  of  an
ohmmeter.  The  faults  of  safety  airbag  system  shall
be detected with the On Board Diagnostics (OBD).

Operation of safety airbag module

When  handling  the  safety  airbag  module  not  yet
released  under  working  state,  it  may  accidentally
release and  result in serious personnel injury.  When
carrying  the  safety  airbag  module  not  yet  released
under working state, keep the front face outward, so
as  to  prevent  the  accidental  release  of  airbag  and
reduce the possibility of injury.

It  is  very  dangerous  to  make  the  safety  airbag
module  not  yet  released  face  down  under  working
state. The release of safety airbag module may result
in  serious  personnel  injury.  The  front  face  shall  be
set  upward,  which  will  reduce  the  action  scope  of
module in case of accidental release of airbag.

Operation of lateral safety airbag module

When  the  lateral  safety  airbag  module  released  due
to  a  collision,  the  internal  padding  frame  of  seat
backrest etc, may be damaged. If the seat backrest is
repeatedly used and  the lateral safety airbag module
is unable to normally release, a severe accident  may
have  occurred,  thus,  when  the  lateral  safety  airbag
module  releases,  the  lateral  safety  airbag  module
and  the  padding  frame  of  seat  backrest  shall  be
replaced  by  new  ones.  After  the  maintenance,
confirm that  the  seat  is  correctly installed and  fixed
by use of proper harness.

Operation of SAS unit

In case, where the ignition switch is not turn off, the
disconnection of SAS unit connector  or the removal
of  SAS  unit  may  release  the  safety  airbag  module,
and  result  in  serious  personnel  injury.  Prior  to
disconnecting the SAS unit connector or remove the
SAS  unit,  turn  the  ignition  switch  to  the  LOCK
position,  and  then  remove  the  negative  cable  of
battery  and  wait  for  more  than  1min  to  exhaust  the
energy  of  SAS  unit  stored  in  the  standby  power
supply.

It  is  dangerous  to  connect  with  the  connector  of
SAS  unit  without  tightly  installed  the  SAS  unit  on
the vehicle. The impact sensor in the control module
may  send  the  electric  signal  to  the  safety  airbag
module, release  the safety  airbag  module  and cause
serious  personnel  injury,  thus  install  tightly  the
control  module  on  the  vehicle  prior  to  connecting
the connector. For the assembly of the vehicles with
the  single-point  sensor,  once  the  safety  airbag
module  released  due  to  accident  or  other  reasons,
the SAS unit must be replaced by a new one, even if
there were no surface damage on the used SAS unit.
The  used  SAS  unit  may  have  been  internally
damaged  and  lead  to  abnormal  operation  and  cause
serious  personnel  injury,  even  death.  The  used
single-point  SAS  unit  is  unable  to  carry  out  the
bench  test  or  self  test  on  the  operation  of  lateral
safety  airbag  sensor.  In  case,  where  the  ignition
switch  is  not  turned  off,  the  disconnection  of  the

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Safety airbag system

T-53

connector  of lateral  safety  airbag sensor  or removal
of  the  lateral  safety  airbag  sensor  may  enable  the
lateral  safety  airbag  sensor  to  work  and  induce  the
module  of  lateral  safety  airbag  to  release,  cause
serious  personnel  injury.  Prior  to  disconnecting  the
connector  of  lateral  safety  airbag  sensor  or  remove
the  lateral  safety  airbag  sensor,  turn  the  ignition
switch  to  the  LOCK  position,  and  then  remove  the
negative cable of battery, wait for more than 1min to
exhaust the energy of SAS unit stored in the standby
power supply.

If  the  lateral  safety  airbag  sensor  is  under  effect  of
vibration  or  the  sensor  disassembled,  the  lateral
safety  airbag  module  may suddenly perform release
and  cause  personnel  injury  or  unable  to  properly
work  and  cause  serious  accident,  thus  keep  the
lateral safety  airbag sensor from  vibration  or  do  not
disassemble  the  sensor.  As  the  lateral  sensor  is
inbuilt in the module of lateral safety airbag module,

After the lateral safety airbag module performed the
release,  problems may  be resulted in the  module. In
case of an internal fault, even if there were no visual
damage  or  deformation,  the  safety  airbag  module
may  be  unable  to  properly  work, and  cause  serious
personnel injury, if the lateral safety airbag sensor is
repeatedly used.

The lateral safety airbag sensor shall be replaced by
a new one. The lateral safety airbag sensor is unable
to make bench test and self-test on the pretensioning
safety belt.

The  test  of  safety  belt  pretensioner  by  use  of  an
ohmmeter may make the pretensioning of safety belt
released  and  result  in  serious  personnel  injury,
hence,  do  not  test  the  pretensioner  of  safety  belt
with

ohmmeter,

use

the

Board

Diagnostics(OBD) instead to detect the fault of
pretensioning safety belt.

Operation of components

The components are contaminated by  oil and grease
etc.  which,  in  case  of  an  accident,  may  cause  the
safety  airbag  module  and  pretensioning  safety  belt
not  to  release  and  unfold,  and  result  in  serious

personnel injury, do not let the components
contaminated by oil and grease etc.,

The  insertion  by  a  screwdriver  etc,  into  the
connector  of  safety  airbag  module  or  the
pretensioning safety belt may damage the connector
and cause the safety airbag module or pretensioning
safety  belt  to  abnormally  release,  and  result  in
serious  personnel  injury,  Therefore,  do  not  insert
foreign matters into the connector.

Repeated use of components

Even  if  the  safety  airbag  module  or  pretensioning
safety  belt  did  not  release  during  a  collision,  and
there  were  no  damaged  traces  on  the  surface  of
safety airbag module or pretensioning safety belt, its
interior would have been damaged and consequently
result in wrong  operation. The operation errors  may
cause  serious  personnel  injury, the  self-test shall  be
made  on  the  undamaged  safety  airbag  module  or
pretensioning safety belt to determine whether it can
be repeatedly used.

Removal/installation

pretensioning

safety belt

As for the removal and installation of pretensioning
safety belt, please refer to the Removal/Installation
of Front Row Seat Safety Belt.

Release procedures of safety airbag
module and pretensioning safety belt

Warning

The  disposal  of  the  safety  airbag  module  and
pretensioning  safety  belt  not  yet  released  under
working  state  may  cause  accidental  release  of  the
safety  airbag  module  and  pretensioning  safety  belt
and result in serious personnel  injury. Do  not reject
the  safety  airbag  module  and  pretensioning  safety
belt not yet released under working state.

If the special release tools and switch harness not
available, please consult the nearest Haima
automobile agent for help

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Safety airbag system

T-54

Attention

The  release  of  safety  airbag  module  and
pretensioning  safety  belt  inside  the  vehicle  may
result  in  the  internal  damage.  If  the  vehicle  is  not
going  to  be  scrapped,  do  not  release  the  safety
airbag  module  and  pretensioning  safety  belt  inside
the  vehicle.  When  the  vehicle  is  going  to  be
scrapped, the inside releases of safety airbag module
and  pretensioning  safety  belt  shall  refer  to
T—Release  Procedures  Inside  Vehicle  (only  when
the vehicle is going to be scrapped).

When  the  vehicle  is  not  scrapped,  the  outside
releases  of  the  safety  airbag  module  and
pretensioning  safety  belt  shall  refer  to  T—Release
Procedure Outside Vehicle.

Attention

When  the  released  safety  airbag  module  and
pretensioning safety belt are handled, please refer to
the  Scrapping  Disposal  Process  (The  release
procedures  inside  vehicle  are  just  regarded  as  those
about to be scrapped).

The special test and release tools are referred to in
T-96—Check of Special Tools Release Tool.

Park a vehicle on an open and large place. Avoid
strong wind and close all doors and windows.

Turn the ignition switch to the LOCK position.

Remove the negative cable of battery and wait for
more than 1min.

Release as per the suitable procedure, the
driver-sided safety airbag module, occupant-sided
safety airbag module, lateral safety airbag module or
pretensioning safety belt.

Driver-sided safety airbag module

Remove the steering column cover.

2. Disconnect the connector of clock spring.

3. As shown in Fig., connect the switch harness of

special tool with the clock spring.

Connect the special release tool with the switch
harness of special tool.

Connect the red clamp of special release tool
with battery positive terminal, and the black
clamp with battery negative terminal.

6. Confirm that the red light on the special release

tool is lit.

7. Be sure that all staff stay at least 5m {20ft}

away from the vehicle.

8. Press the trigger switch on the special release

tool to release the driver-sided safety airbag
module.

Occupant-sided safety airbag module

1. Remove the sundries bin.

2. Disconnect the connector of occupant-sided

safety airbag module.

As shown in Fig., connect the switch harness of
special tool with the occupant-sided safety
airbag module.

Connect the special release tool with the switch
harness of special tool.

Clock spring

connector

Trigger
switch

Module connector of

occupant-side safety

airbag

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Haima 7. Electrical System of Body. Service Manual - part 4