Suzuki Grand Vitara JB416 / JB420. Manual - part 324

8B-92 Air Bag System:

NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

Inspection of Intermittent and Poor
Connections

S5JB0A8204047

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.

• 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.

1) With ignition switch OFF, disconnect SDM connector

“L32”.

2) Release shorting bar in SDM connector inserting release

tool (1) included in special tool (A).

3) Measure voltage between “L32-1” and body ground, and

between “L32-2” and ground (for DTC B1334) or “L32-3”
and body ground, and between “L32-4” and body ground
(for DTC B1338) with connected special tools (A), (B)
and (C).

Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310

With ignition switch ON, is voltage 4 V or less?

Substitute a known-
good SDM and recheck.

DTC B1034: Repair
short from “YEL/GRN”
or “YEL/BLU” wire
circuit to power circuit.
DTC B1038: Repair
short from “BLK/YEL” or
“BRN/YEL” wire circuit
to power circuit.

Step

Action

Yes

STEERING WHEEL

(B)

(C)

(A)

“G18”, “G41”

“L33-1”

“L33-2”

“L33-3”

“L33-4”

1, (A)

(A)

I5JB0A820060-01

Air Bag System: 8B-93

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 Accident

S5JB0A8204048

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

– Driver / Passenger forward-sensors
– Left / Right side-sensors
– SDM
– Contact coil
– Air bag wire harness in main harness,

instrument panel harness, floor harness,
passenger air bag harness and seat
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.

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.

(A)

I4RS0A820045-01

IYSQ01010028-01

IYSQ01820025-01

8B-94 Air Bag System:

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
• Driver / Passenger forward-sensors
• 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-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

– Check wire harness and connectors for damage or

tightness.

– Check contact coil case for damage.

• 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.)

I5JB0A820061-01

I5JB0A820062-01

I4RS0A820048-01

I5JB0A820063-01

Air Bag System: 8B-95

– Check connector or lead wire of SDM for scorching,

melting or damage.

– Check SDM connector and terminals for tightness.
– Check if SDM sets a DTC and is judged as

malfunctioning according to the diagnostic flow.

• Air bag wire harness and connections

– Check for damages, deformities or poor

connections.
Refer to “Inspection of Intermittent and Poor
Connections”.

– Check wire harness clamps for tightness.

• Forward-sensor

– Check sensor (1) and bracket (2) for damage, bend

or rust.

– Check connector (3) or lead wire (4) of forward-

sensor for scorching, melting or damage.

• Side-sensor

– Check sensor (1) and under body (2) for dents,

cracks, deformation or rust.

– Check sensor connector (sensor side and harness

side) (3) or sensor lead wire (4) for damage, crack,
scorching or melting.

• Seat belt pretensioner

– Check for dents, cracks, damage or fitness
– Check harness and connector for damage or

tightness.

• Seat belts and mounting points

– Refer to “Front Seat Belt Components in Section

8A”.

• “AIR BAG” warning lamp

– After vehicle is completely repaired, perform “Air

Bag Diagnostic System Check”.

• Side-air bag (inflator) module

– Check for dents, cracks, damage or fitness.
– Check trim cover for cracks or deformities.
– Check wire harness and connector for damage or

tightness.

• Side curtain-air bag (inflator) module

– Check for dents, cracks, damage or fitness.
– Check harness wire harness and connector for

damage or tightness.

– Check headlining for cracks or deformation.

1. Main harness

4. Seat harness

2. Instrument panel harness

5. Grounding point

3. Floor harness

I5JB0A820064-01

I5JB0A820006-01

I5JB0A820065-01

1. Seat belt
2. Retractor assembly

I5JB0A820066-01

I3JA01820043-01

Content .. 322 323 324 325 ..