Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-88
3Contact coil circuit (horn and audio control switch
circuit) check (non cruise control model)
1) Check for continuity between each terminal of horn
switch terminals [A] and audio control switch terminals
[B] (if equipped) as shown in figure.
Is each measured resistance 3
Ω or less?Go to Step 5. Replace contact coil. Step Action Yes No
ABCDEF
abcdef
A
Ba
b
TerminalTerminal
C
Dc
d E
Fe
f
[A] [B]
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Downloaded from www.Manualslib.com manuals search engine 8B-89 Air Bag System:
Inspection of Intermittent and Poor
Connections
S6RW0D8204047
Most intermittents are caused by faulty electrical
connections or wiring. When a check for proper
connection is requested in a diagnostic flow, perform
careful check of suspect circuits.
If any abnormality is found, repair or replace as a wire
harness assembly.
• Poor mating of connector halves, or terminals not fully
seated in the connector body (backed out).• Dirt or corrosion on the terminals. The terminals must
be clean and free of any foreign material which could
impede proper terminal contact.
However, cleaning the terminal with a sand paper or
the like is prohibited.
• Damaged connector body, exposing the terminals to
moisture and dirt, as well as not maintaining proper
terminal orientation with the component or mating
connector. 4Contact coil circuit (horn, audio control and cruise
control switch circuit) check (cruise control model)
1) Check for continuity between each terminal of horn
switch terminals, audio control switch terminals and
cruise control switch terminals as shown in figure.
Is each measured resistance 3
Ω or less?Go to Step 5. Replace contact coil.
5Contact coil circuit check
1) Measure resistance between each terminal and other
terminal.
Is each measured resistance infinity?Contact coil and its
circuit are good
condition.Replace contact coil. Step Action Yes No
ABCDEF
GH I J KL
a bc def
gh i j k l
A
B
C
Da
b
c
d
Terminal
E
Fe
f
I
J
K
Li
j
k
l
Terminal
G
Hg
h
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Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-90
• Improperly formed or damaged terminals.
Check each connector terminal in problem circuits
carefully to ensure good contact tension by using the
corresponding mating terminal included in the
connector test adapter kit (special tool).
If contact tension is not enough, reform the terminal to
increase contact tension or replace it.
Special tool
(A): 09932–76010 Connector test adapter kit
• Poor terminal-to-wire connection.
Check each wire harness in problem circuits for poor
connection by shaking it by hand lightly. If any
abnormal condition is found, change the wire harness
assembly or component parts with new ones.
• Wire insulation which is rubbed through, causing an
intermittent short as the bare area touches other
wiring or parts of the vehicle.
• Wire broken inside the insulation. This condition could
cause a continuity check to show a good circuit, but if
only 1 or 2 strands of a multi-strand-type wire are
intact, resistance could be far too high.
Repair and Inspection Required after AccidentS6RW0D8204048
CAUTION!
• All air bag system components, including
the electrical harness (component
mounting points), must be inspected after
an accident. If any components are
damaged or bent, they must be replaced
even if air bag system activation did not
occur.
• Never use air bag system parts from
another vehicle.
• Do not attempt to service the parts below.
Service of these parts is by replacement
only.
– Driver / Passenger air bag (inflator)
modules
– Driver / Passenger side-air bag (inflator)
modules
– Driver / Passenger side curtain-air bag
(inflator) modules
– Driver / Passenger seat belt
pretensioners
– Forward impact-sensor
– Driver / Passenger side impact-sensors
–SDM
– Contact coil and combination switch
assembly
– Air bag wire harness in main harness,
instrument panel harness, floor harness,
passenger air bag harness, side-air bag
harness and side curtain-air bag
harness.
• Proper operation of the sensors and air
bag system requires that any repairs to the
vehicle structure return it to its original
production configuration.
(A)
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Downloaded from www.Manualslib.com manuals search engine 8B-91 Air Bag System:
CAUTION!
After detecting one time of such collision as
to meet deployment conditions, the SDM
must not be used.
Refer to “Air Bag Diagnostic System Check”
when checking the SDM.
Accident with Deployment / Activation – Component
Replacement
When driver and passenger air bags are deployed, the
following components must be replaced.
• Driver and passenger air bag (inflator) modules
• Driver and passenger seat belt pretensioners
• SDM after detecting such collision as to meet
deployment conditions
• Forward impact-sensor
• Instrument panel
When side-air bag and side curtain-air bag are deployed,
the following components must be replaced.
• Deployed side-air bag (inflator) module
• Deployed side curtain-air bag (inflator) module
• Side impact-sensor
•SDM
Accident with or without Deployment / Activation –
Component Inspections
Certain air bag and restraint system components must
be inspected after any crash, whether the air bag system
activated or not. If any faulty condition is found in the
following checks, replace faulty part.
Those components are:
• Steering column (1) and shaft joints
– Check for length, damage and bend according to
“Checking Steering Column for Accident Damage in
Section 6B”.
• Steering column bracket (2) and capsules
– Check for damage and bent.
• Steering wheel and driver air bag (inflator) module
– Check for damage or air bag (inflator) module
fitness.
– Check trim cover (pad surface) for cracks.
– Check wire harness and connector for damage or
tightness.• Contact coil assembly
– Check wire harness and connectors for damage or
tightness.
– Check contact coil case for damage.
– Check contact coil circuit referring to “Contact Coil
Cable and Its Circuit Check”.
• Instrument panel member and reinforcement
– Check for any distortion, bending, cracking or other
damage.
– Check instrument panel for cracks or deformities.
• Passenger air bag (inflator) module
– Check for dents, cracks, damage or fitness.
– Check harness and connector for damage or
tightness.
•SDM
– Check for external damage such as deformation,
scratch, crack, peeled paint, etc.
– Check SDM for a cause in itself preventing its
proper installation. (There is a gap between SDM
and SDM plate, or it cannot be fixed securely.)
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2
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Downloaded from www.Manualslib.com manuals search engine 8B-113 Air Bag System:
12) Notify all people in immediate area that you intend to
deploy / activate air bag (inflator) module or seat belt
pretensioner.
NOTE
• When air bag (inflator) module deploys and
seat belt pretensioner activates, rapid gas
expansion will create substantial report.
Wear suitable ear protection. Notify all
people in immediate area that you intend
to deploy air bag (inflator) module or
activate seat belt pretensioner and suitable
ear protection should be worn.
• When driver air bag (inflator) module
deploys, driver air bag (inflator) module
may jump about 30 cm (1 ft) vertically. This
is normal reaction to force of rapid gas
expansion inside of drive air bag (inflator)
module.
• After air bag (inflator) module has been
deployed, surface of air bag (inflator) may
contain powdery residue. This powder
consists primarily of cornstarch (used to
lubricate bag (inflator) as it inflates) and by
products of chemical reaction.
WARNING!
• Do not place deployed air bag (inflator)
module and activated seat belt
pretensioner near any flammable objects.
• Do not apply water, oil, etc. to deployed air
bag (inflator) module and activated seat
belt pretensioner.
• Wait for about 30 minutes before touching
any metal surface of air bag (inflater)
module or seat belt pretensioner module.
Disregarding these precautions may cause
fire or personal injury.
Failure to follow procedures may result in fire
or personal injury.
13) Separate two banana plugs (1) on deployment
harness.
14) Connect deployment harness to 12 volts vehicle
battery (2). This will immediately deploy or activate
air bag (inflator) module or seat belt pretensioner.
15) Disconnect deployment harness from 12 volts
vehicle battery (2) and short two deployment
harness leads together by fully seating one banana
plug into the other.16) In the unlikely event that air bag (inflator) module or
seat belt pretensioner did not deploy / activate after
following these procedures, proceed immediately
with Step 22) through 25). If air bag (inflator) module
or seat belt pretensioner did deploy or activate,
proceed with Steps 18) through 21).
17) Put on pair of shop gloves to protect your hands from
possible irritation and heat when handling deployed
air bag (inflator) module or activated seat belt
pretensioner.
18) Disconnect adapter cable (special tool) from air bag
(inflator) module or seat belt pretensioner as soon as
possible. This will prevent adapter cable (special
tool) from damage due to possible contact with hot
air bag (inflator) module or hot seat belt
pretensioner.
19) Check adapter cable as follows.
• For air bag (inflator) module
Be sure to check air bag (inflator) module adapter
cable (special tool) for damage after deployment
and replace it with new adapter cable (special
tool), if it is damaged.
• For seat belt pretensioner
Be sure to check seat belt pretensioner adapter
cable (special tool) for damage after seat belt
pretensioner is activated. Replace it with spare
connector (special tool) or new adapter, if
necessary.
20) Dispose of deployed air bag (inflator) module (1) or
activated seat belt pretensioner (2) through normal
refuse channels after it has cooled for at least 30
minutes and tightly seal air bag (inflator) module (1)
or seat belt pretensioner (2) in strong vinyl bag.
Refer to “Deployed Air Bag (Inflator) Module and
Activated Seat Belt Pretensioner Disposal” for
details.
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Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-116
8) Route deployment harness (1) out of vehicle.
9) Check that inside of vehicle and area surrounding
vehicle are clear of all people and loose or
flammable objects.
10) Stretch deployment harness (1) to its full length 10 m
(33 ft).
11) Place 12 volts vehicle battery (2) near shorted end of
deployment harness (1).
12) Completely cover windshield area and front door
window openings with drop cloth, a blanket or any
similar item. This reduces possibility of injury due to
possible fragmentation of vehicle’s glass or interior.
13) Notify all people in immediate area that you intend to
deploy air bag (inflator) module or activate seat belt
pretensioners.
NOTE
• When air bag (inflator) module deploys or
seat belt pretensioners activate, rapid gas
expansion will create substantial report.
Wear suitable ear protection. Notify all
people in immediate area that you intend
to deploy air bag (inflator) module or to
activate seat belt pretensioner and suitable
ear protection should be worn.
• After air bag (inflator) module has been
deployed, surface of air bag may contain
powdery residue. This powder consists
primarily of cornstarch (used to lubricate
air bag (inflator) module as it inflates) and
by-products of chemical reaction.
WARNING!
• Do not place deployed air bag (inflator)
module and activated seat belt
pretensioners near any flammable objects.
• Do not apply water, oil, etc. to deployed air
bag (inflator) module and activated seat
belt pretensioners.
• Wait for about 30 minutes before touching
any metal surface of air bag (inflater)
module or seat belt pretensioner modules.
Disregarding these precautions may cause
fire or personal injury.
Failure to follow procedures may result in fire
or personal injury.
14) Separate two banana plugs (1) on deployment
harness (2).
15) Connect deployment harness (2) to 12 volts vehicle
battery (3). This will immediately deploy or activate
air bag (inflator) module or seat belt pretensioners.
16) Disconnect deployment harness (2) from 12 volts
vehicle battery (3) and short two deployment
harness leads together by fully seating one banana
plug into the other.
17) Repeat Steps 3) through 16) to deploy / activate air
bag (inflator) modules and seat belt pretensioners
which has not been deployed / activated, if any.
18) In the unlikely event that air bag (inflator) module
and seat belt pretensioners after following these
procedures, proceed immediately with Step 24)
through 26). If air bag (inflator) module and seat belt
pretensioners did deploy / activate, proceed with
Steps 19) through 23).
19) Carefully remove drop cloth from vehicle and clean
off any fragments or discard it entirely.
20) Put on pair of shop gloves to protect your hands from
possible irritation and heat when handling deployed
air bag (inflator) module and activated seat belt
pretensioners.
10 m (33 ft)
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Downloaded from www.Manualslib.com manuals search engine 8B-117 Air Bag System:
21) Disconnect adapter cable (special tool) from air bag
(inflator) module or seat belt pretensioner as soon as
possible. This will prevent adapter cable (special
tool) from damage due to possible contact with hot
air bag (inflator) module or hot seat belt
pretensioner.
22) Check adapter cable connector as follows.
Adapter cable connector (special tool) is designed to
be reused. However it should be inspected for
damage after deployment and replaced if necessary.
23) With air bag (inflator) modules deployed and seat
belt pretensioners activated, vehicle may be
scrapped in the same manner as non-air bag system
/ seat belt pretensioner equipped vehicle.
NOTE
Remaining steps are to be followed in the
unlikely event that air bag (inflator) module
did not deploy or seat belt pretensioner did
not activate.
24) Remove undeployed air bag (inflator) module(s) and/
or inactivated seat belt pretensioner(s) from vehicle.
For driver air bag (inflator) module, refer to “Driver
Air Bag (Inflator) Module Removal and Installation”.
For passenger air bag (inflator) module, refer to
“Passenger Air Bag (Inflator) Module Removal and
Installation”. For side air bag (inflator) module, refer
to “Side-Air Bag (Inflator) Module Removal and
Installation”. For side curtain-air bag (inflator)
module, refer to “Side Curtain-Air Bag (Inflator)
Module Removal and Installation”. For seat belt
pretensioner, refer to “Front Seat Belt Removal and
Installation in Section 8A”.
25) Temporarily store undeployed air bag (inflator)
module referring to “Precautions on Service and
Diagnosis of Air Bag System” for details.
26) Contact your local distributor for further assistance.
Deployed Air Bag (Inflator) Module and
Activated Seat Belt Pretensioner Disposal
S6RW0D8206019
WARNING!
Failure to follow proper air bag (inflator)
module and seat belt pretensioner disposal
procedures can result in air bag deployment
and pretensioner activation which may cause
personal injury. The undeployed air bag
(inflator) module and the inactivated seat belt
pretensioner must not be disposed of
through normal refuse channels.
The undeployed air bag (inflator) module and
the inactivated seat belt pretensioner
contains substances that can cause severe
illness or personal injury if the sealed
container is damaged during disposal.
Deployed air bag (inflator) module and the activated seat
belt pretensioner can be disposed of through normal
refuse channels just like any other parts. For their
disposal, however, the following points should be noted.
• The air bag (inflator) module and the seat belt
pretensioner immediately after deployment / activation
is very hot. Wait for 30 minutes to cool it off before
handling it.
• Never apply water, oil, etc. to deployed air bag
(inflator) module and the activated seat belt
pretensioner to cool it off and be careful so that water,
oil etc. does not get on the deployed air bag (inflator)
module and the activated seat belt pretensioner.
• After the air bag (inflator) module has been deployed,
the surface of the air bag may contain a powdery
residue. This powder consists primarily of cornstarch
(used to lubricate the bag as it inflates) and by-
products of the chemical reaction. As with many
service procedures, you should wear gloves and
safety glasses.
• When disposing of the deployed air bag (inflator)
module and the activated seat belt pretensioner, be
sure to seal it in a vinyl bag.
• When air bag (inflator) module and seat belt
pretensioner have been deployed / activated inside
the vehicle which is going to be scrapped, leave them
as installed to the vehicle.
• Be sure to wash your hands with mild soap and water
after handling them.
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Downloaded from www.Manualslib.com manuals search engine 8B-119 Air Bag System:
The adapter (1) will also give an idea of whether or not
contact tension is sufficient, helping to find an open or
intermittent open due to poor terminal contact. An SDM
short bar release tool (2) is included in the connector test
adapter kit. Inserting it into the SDM connector (3) will
releases the shorting bar.
Special tool
(B): 09932–75010 Air bag driver / passenger load
tool
This tool is used as a diagnostic aid and safety device to
prevent inadvertent air bag (inflator) module deployment.
The load tool has three connectors attached to its case
which are electrically functional and serve as resistive
load substitutions.
No more than two connectors are used at any time.
One of connectors (“STEERING WHEEL”) is used to
substitute the load of the followings.
• Driver air bag (inflator) module when it is connected at
the top of the column to the contact coil assembly.
• Passenger air bag (inflator) module when it is
connected to the air bag harness connector in
instrument panel harness for passenger air bag
(inflator) module.
• Each of driver and passenger seat belt pretensioners
when it is connected to air bag harness connector in
instrument panel harness for driver and passenger
seat belt pretensioners.
• Side-air bag (inflator) module when it is connected to
the floor harness connector for side-air bag (inflator)
module.
• Side curtain-air bag (inflator) module when it is
connected to the floor harness connector for side
curtain-air bag (inflator) module.Another connector (“BASE OF COLUMN”) is used to
substitute the load of the driver air bag (inflator) module
and the contact coil assembly when it is connected at the
base of the column to the air bag wire harness.
The third connector (“PASSENGER INFLATOR”) is not
used.
By substituting the resistance of the load tool when
called for, a determination can be made as to whether an
inflator circuit component is causing system malfunction
and which component is causing the malfunction.
The load tool should be used only when specifically
called for in the diagnostic procedures.
1
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3
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1. Connector for contact coil and driver air bag (inflator) module
(Located near the base of the steering column)
2. Connector for driver, passenger air bag (inflator) module, side-air bag
(inflator) module and driver and passenger seat belt pretensioners
3. Not used
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