Nissan GT-R. Manual - part 290

PRECAUTIONS

SR-3

< PRECAUTION >

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4.

Perform the necessary repair operation.

5.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)

6.

Perform self-diagnosis check of all control units using CONSULT.

Precaution for Battery Service

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Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

Service

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• Never use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes.
For approximately 3 minutes after the battery negative terminal is removed, it is still possible for the air bag
and seat belt pre-tensioner to deploy. Therefore, never work on any SRS connectors or wires until at least 3
minutes have elapsed.

• Diagnosis sensor unit must always be installed with their arrow marks “

⇐

” pointing towards the front of the

vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities, or rust before installa-
tion and replace as required.

• The spiral cable must be aligned in the neutral position since its rotations are limited. Never turn steering

wheel and column after removal of steering gear.

• Handle air bag module carefully. Always place driver and passenger air bag modules with the pad side fac-

ing upward and seat mounted side air bag module standing with the stud bolt side facing downward.

• Perform self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag deploys, the front instrument panel assembly should be replaced if damaged.
• Always replace instrument panel pad following passenger air bag deployment.

Occupant Classification System

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• Replace occupant classification system control unit and passenger front seat cushion as an assembly.

Refer to 

SE-46, "Exploded View"

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SR-4

< PREPARATION >

PREPARATION

PREPARATION

PREPARATION

Commercial Service Tools

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Tool name

Description

Tamper resistant TORX bit

Removes driver air bag module and/or air bag 
diagnosis sensor unit

Remover tool

Removes clips, pawls, and metal clips

S-NT757

JMKIA3050ZZ

COLLISION DIAGNOSIS

SR-5

< BASIC INSPECTION >

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BASIC INSPECTION

COLLISION DIAGNOSIS

FOR FRONTAL COLLISION

FOR FRONTAL COLLISION : When SRS is activated in a collision

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CAUTION:

Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.

WORK PROCEDURE

1.

Before performing any of the following steps, ensure that all vehicle body and structural repairs have been
completed.

2.

Replace the diagnosis sensor unit.

3.

Remove the front air bag modules, crash zone sensor, bracket and seat belt pre-tensioner assemblies.

4.

Check the SRS components using the table below:
Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)

5.

Install new front air bag modules, crash zone sensor assembly, bracket and seat belt pre-tensioner
assemblies.

6.

Perform self-diagnosis using CONSULT or air bag warning lamp. Refer to 

SRC-8, "Diagnosis Description"

for details. Ensure entire SRS operates properly.

7.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to

SRC-8, "Air Bag Warning Lamp Diagnosis"

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SRS INSPECTION (FOR FRONTAL COLLISION)

Part

Inspection

Driver air bag module

If the driver air bag has deployed:
REPLACE
Install with new fasteners.

Passenger air bag module (if 
equipped)

If the passenger air bag has deployed:
REPLACE
Install with new fasteners.

Crash zone sensor

If any of the front air bags or seat belt pre-tensioners* have been activated:
REPLACE the crash zone sensor and bracket with new fasteners.
*: Confirm seat belt pre-tensioner activation using CONSULT only.

Seat belt pre-tensioner assem-
blies
(All applicable locations: buckle, 
retractor, lap outer)

If either the driver or passenger seat belt pre-tensioner* has been activated:
REPLACE all seat belt pre-tensioner assemblies with new fasteners.
*: Confirm seat belt pre-tensioner activation using CONSULT only.

Diagnosis sensor unit

If any of the SRS components have been activated:
REPLACE the diagnosis sensor unit.
Install with new fasteners.

Steering wheel

1.

Visually check steering wheel for deformities.

2.

Check harness (built into steering wheel) and connectors for damage, and terminals for defor-
mities.

3.

Install driver air bag module into the steering wheel to check fit and alignment with the wheel.

4.

Check steering wheel for excessive free play.

5.

If no damage is found, reinstall.

6.

If damaged 

−

 REPLACE.

Spiral cable

If the driver front air bag has deployed:
REPLACE the spiral cable.

Occupant classification system 
(Passenger seat)

1.

Remove passenger seat assembly.

2.

Check control unit case for dents, cracks of deformities.

3.

Check connectors and pressure sensor tube for damage, and terminals for deformities.

4.

Check seat frame and cushion pan for dents or deformities.

5.

If no damage is found, reinstall seat with new fasteners.

6.

If damaged 

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 REPLACE seat cushion assembly with new fasteners.

SR-6

< BASIC INSPECTION >

COLLISION DIAGNOSIS

FOR FRONTAL COLLISION : When SRS is not activated in a collision

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CAUTION:

Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.

WORK PROCEDURE

1.

Before performing any of the following steps, ensure that all vehicle body and structural repairs have been
completed.

2.

Check the SRS components using the table below:
Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)

3.

Perform self-diagnosis using CONSULT or air bag warning lamp. Refer to 

SRC-8, "Diagnosis Description"

for details. Ensure entire SRS operates properly.

4.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to

SRC-8, "Air Bag Warning Lamp Diagnosis"

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SRS INSPECTION (FOR FRONTAL COLLISION)

Harness and connectors

1.

Check connectors for poor connection, damage, and terminals for deformities.

2.

Check harness for binding, chafing, cuts, or deformities.

3.

If no damage is found, reinstall the harness and connectors.

4.

If damaged 

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 REPLACE the damaged harness. Do not attempt to repair, splice or modify any 

SRS harness.

Instrument panel assembly

If the passenger air bag has deployed: 
REPLACE the instrument panel assembly. (integrated type)

Part

Inspection

Part

Inspection

Driver air bag module

If the driver air bag has NOT been deployed:
1.

Remove driver air bag module. Check harness cover and connectors for damage, terminals for 
deformities, and harness for binding.

2.

Install driver air bag module into the steering wheel to check fit and alignment with the wheel.

3.

If no damage is found, reinstall with new fasteners.

4.

If damaged 

−

 REPLACE. Install driver air bag module with new fasteners.

Passenger air bag module (if 
equipped)

If the passenger air bag has NOT been deployed:
1.

Remove passenger air bag module. Check harness cover and connectors for damage, termi-
nals for deformities, and harness for binding.

2.

Install passenger air bag module into the instrument panel to check fit with the instrument panel.

3.

If no damage is found, reinstall with new fasteners.

4.

If damaged 

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 REPLACE. Install passenger air bag modules with new fasteners.

Crash zone sensor

If the front air bags or seat belt pre-tensioners have NOT been activated:
1.

Remove the crash zone sensor. Check harness connectors for damage, terminals for deformi-
ties, and harness for binding.

2.

Check for visible signs of damage (dents, cracks, deformation, etc.) of the crash zone sensor 
and bracket.

3.

Install the crash zone sensor to check fit.

4.

If no damage is found, reinstall with new fasteners.

5.

If damaged 

−

 REPLACE the crash zone sensor and bracket with new fasteners. 

Seat belt pre-tensioner assem-
blies
(All applicable locations: buckle, 
retractor, lap outer)

If the pre-tensioners have NOT been activated:
1.

Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and harness for 
binding.

2.

Check belts for damage and anchors for loose mounting.

3.

Check retractor for smooth operation.

4.

Check seat belt adjuster for damage.

5.

Check for deformities of the center pillar inner.

6.

If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.

7.

If no damage is found, reinstall seat belt pre-tensioner assembly.

8.

If damaged 

−

 REPLACE. Install the seat belt pre-tensioners with new fasteners.