Infiniti I30 (A33). Manual - part 105

General Specifications.............................................157
Disc Brake ...............................................................157
Brake Pedal .............................................................157
Parking Brake ..........................................................157
Control Valve ...........................................................157
Brake Booster ..........................................................158
ABS Wheel Sensor..................................................158

IDX

CONTENTS

(Cont’d)

BR-3

Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”

NHBR0001

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to INFINITI I30 is as follows (The composition var-
ies according to optional equipment.):

For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, crash zone sensor, warning lamp, wiring harness and spiral cable.

For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring
harness, warning lamp (one of components of air bags for a frontal collision).

Information necessary to service the system safely is included in the RS section of this Service Manual.

WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified with yellow harness connector (and with
yellow harness protector or yellow insulation tape before the harness connectors).

SBR686C

Precautions for Brake System

NHBR0002

Recommended fluid is brake fluid “DOT 3”.

Never reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas.

To clean or wash all parts of master cylinder, disc brake
caliper and wheel cylinder, use clean brake fluid.

Never use mineral oils such as gasoline or kerosene. They
will ruin rubber parts of the hydraulic system.

Use flare nut wrench when removing and installing brake
tube.

Always torque brake lines when installing.

Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage.
Refer to “Brake Burnishing Procedure”, “ON-VEHICLE
SERVICE”, BR-8.

WARNING:

Clean brake pads and shoes with a waste cloth, then wipe
with a dust collector.

PRECAUTIONS

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

BR-4

Wiring Diagrams and Trouble Diagnosis

NHBR0003

When you read wiring diagrams, refer to the following:

“HOW TO READ WIRING DIAGRAMS” in GI section

“POWER SUPPLY ROUTING” for power distribution circuit in EL section

When you perform trouble diagnosis, refer to the following:

“HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES” in GI section

“HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT” in GI section

For trouble diagnoses of models with ABS, refer to the trouble diagnoses for models with ABS. Refer to
BR-39.

For trouble diagnoses of models with TCS, refer to the trouble diagnoses for models with TCS even when
the diagnostic items are related to the ABS system. Refer to BR-81.

IDX

PRECAUTIONS

Wiring Diagrams and Trouble Diagnosis

BR-5

Commercial Service Tools

NHBR0004

Tool name

Description

1 Flare nut crowfoot
2 Torque wrench

NT360

Removing and installing each brake piping
a: 10 mm (0.39 in)

Brake fluid pressure
gauge

NT151

Measuring brake fluid pressure

PREPARATION

Commercial Service Tools

BR-6

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