The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” 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 that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• 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 by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

INFOID:0000000006299422

NOTE:
• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure
below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

Turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

Perform the necessary repair operation.

DEF-4

< PRECAUTION >

PRECAUTIONS

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

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

COMPONENT PARTS

DEF-5

< SYSTEM DESCRIPTION >

DEF

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000006299423

Component Description

INFOID:0000000006299424

BCM
Refer to

BCS-4, "BODY CONTROL

SYSTEM : Component Parts Loca-
tion"

Door mirror defogger (driver side)

Rear window defogger connector

Multifunction switch (rear window
defogger switch)
Refer to

AV-9, "Component Parts Lo-

cation"

IPDM E/R
Refer to

PCS-4, "Component Parts

Location"

AV control unit

Wiper deicer

JMLIA0978ZZ

BCM

• Transmits rear window defogger switch operation to IPDM E/R via CAN commu-

nication

• Performs the timer control of rear window defogger

IPDM E/R

Controls rear window defogger relay when rear window defogger switch signal is re-
ceived via CAN communication, and then operates rear window defogger

Multifunction switch

• The rear window defogger switch is installed
• Turns the indicator lamp ON when detecting the operation of rear window defog-

ger

Rear window defogger switch

• The rear window defogger is operated by turning the rear window defogger switch

ON.

• The indicator lamp in the rear window defogger switch illuminates when the rear

window defogger is operating.

Rear window defogger relay

Operates the rear window defogger with the control signal from IPDM E/R

Rear window defogger

Heats the heating wire with the power supply from the rear window defogger relay
to prevent the rear window from fogging up.

Door mirror defogger

Heats the heating wire with the power supply from the rear window defogger relay
to prevent the door mirror from fogging up.

Wiper deicer

Heats the heating wire with the power supply from the wiper deicer relay to thaw the
frozen wiper blade and glass.

Wiper deicer relay

Supplies power to the wiper deicer with rear window defogger relay control.

Content .. 371 372 373 374 ..