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. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

The vehicle may be equipped with a passenger air bag deactivation switch. Because no rear seat exists where
a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a
rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the
instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is
enabled and could inflate for certain types of collision. When the switch is turned to the OFF position, the pas-
senger air bag is disabled and will not inflate. A passenger air bag OFF indicator on the instrument panel lights
up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected
by the passenger air bag deactivation switch.

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 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.

• The vehicle may be equipped with a passenger air bag deactivation switch which can be operated by

the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and
will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled and
could inflate for certain types of collision. After SRS maintenance or repair, make sure the passenger
air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for ser-
vice.

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:0000000006484509

NOTE:
• Before removing and installing any control units, first turn the ignition switch to the LOCK position, then dis-

connect 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.

For vehicle with 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 operation pro-
cedure below before starting the repair operation.

DEF-4

< PRECAUTION >

PRECAUTIONS

OPERATION PROCEDURE

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

Turn the 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.

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.)

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

Precaution for Procedure without Cowl Top Cover

INFOID:0000000006484510

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

PIIB3706J

COMPONENT PARTS

DEF-5

< SYSTEM DESCRIPTION >

DEF

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000006479498

*1: With automatic A/C
*2: With manual A/C
*3: Without A/C

Component Description

INFOID:0000000006479499

BCM
Refer to

BCS-6, "BODY CONTROL

SYSTEM : Component Parts Loca-
tion"

(With Intelligent Key system) or

BCS-96, "BODY CONTROL SYS-
TEM : Component Parts Location"

(Without Intelligent Key system).

Rear window defogger connector

Multidisplay unit*1
A/C control*2
Heter control*3
(Rear window defogger switch)

Door mirror defogger

IPDM E/R
Refer to

PCS-5, "Component Parts

Location"

(With Intelligent Key sys-

tem) or

PCS-37, "Component Parts

Location"

(Without Intelligent Key

system).

Condenser

JMLIA1473ZZ

BCM

• Rear window defogger switch operation is transmitted to IPDM E/R via CAN

communication

• Performs the timer control of rear window defogger

IPDM E/R

BCM controls rear window defogger relay via CAN communication, and then oper-
ates rear window defogger

• Multidisplay unit*1
• A/C control*2
• Heter control*3

• 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 illuminates when the rear win-

dow defogger is operating.

Rear window defogger relay

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

DEF-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

*1: With automatic A/C
*2: With manual A/C
*3: Without A/C

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.

SYSTEM

DEF-7

< SYSTEM DESCRIPTION >

DEF

SYSTEM

WITH AUTO A/C

WITH AUTO A/C : System Diagram

INFOID:0000000006675854

WITH AUTO A/C : System Description

INFOID:0000000006675855

OPERATION DESCRIPTION

• BCM detects that the rear window defogger switch turns ON when the ignition switch is ON, and then trans-

mits the rear window defogger switch signal to IPDM E/R via CAN communication for approximately 15 min-
utes.

• IPDM E/R turns rear window defogger relay ON when it receives the rear window defogger switch signal.
• The power is supplied to the rear window defogger and door mirror defogger when the rear window defogger

relay turns ON.

• When rear window defogger is activated, indicator lamp on rear window defogger switch turns ON.

TIMER FUNCTION

• BCM transmits the rear window defogger switch signal to IPDM E/R for approximately 15 minutes when the

rear window defogger switch is turns ON while ignition switch is ON. Then, IPDM E/R activates rear window
defogger and door mirror defogger.

• The timer is cancelled if the rear window defogger switch is pressed again during timer operation. BCM

stops the output of rear window defogger switch signal. The same action occurs during timer operation if the
ignition switch is OFF.

WITHOUT AUTO A/C

WITHOUT AUTO A/C : System Diagram

INFOID:0000000006479500

*1: With manual A/C
*2: Without A/C

JMLIA1488GB

JMLIA1426GB

DEF-8

< SYSTEM DESCRIPTION >

SYSTEM

WITHOUT AUTO A/C : System Description

INFOID:0000000006675084

OPERATION DESCRIPTION

• BCM detects that the rear window defogger switch turns ON when the ignition switch is ON, and then trans-

mits the rear window defogger switch signal to IPDM E/R via CAN communication for approximately 15 min-
utes.

relay turns ON.

• When rear window defogger is activated, indicator lamp on rear window defogger switch turns ON.

TIMER FUNCTION

• BCM transmits the rear window defogger switch signal to IPDM E/R for approximately 15 minutes when the

rear window defogger switch is turns ON while ignition switch is ON. Then, IPDM E/R activates rear window
defogger and door mirror defogger.

• The timer is cancelled if the rear window defogger switch is pressed again during timer operation. BCM

stops the output of rear window defogger switch signal. The same action occurs during timer operation if the
ignition switch is OFF.

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

DEF-9

< SYSTEM DESCRIPTION >

DEF

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000006706394

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

: Applicable item

NOTE:

• *1: This item is displayed, but not used.

• *2: For models with automatic A/C, this diagnosis mode is not used.

FREEZE FRAME DATA (FFD)

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

Rear window defogger

REAR DEFOGGER

Warning chime

BUZZER

Interior room lamp timer

INT LAMP

Exterior lamp

HEAD LAMP

Wiper and washer

WIPER

Turn signal and hazard warning lamps

FLASHER

• Automatic A/C
• Manual A/C

AIR CONDITONER

• Intelligent Key system
• Engine start system

INTELLIGENT KEY

Combination switch

COMB SW

Body control system

BCM

NVIS - NATS

IMMU

Interior room lamp battery saver

BATTERY SAVER

Back door open

TRUNK

Theft warning alarm

THEFT ALM

—

RETAINED PWR*

Signal buffer system

SIGNAL BUFFER

DEF-10

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.

REAR WINDOW DEFOGGER

REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)

INFOID:0000000006479503

Data monitor

ACTIVE TEST

CONSULT screen item

Indication/Unit

Description

Vehicle Speed

km/h

Vehicle speed of the moment a particular DTC is detected

Odo/Trip Meter

Total mileage (Odometer value) of the moment a particular DTC is detected

Vehicle Condition

SLEEP>LOCK

Power position status of
the moment a particular
DTC is detected

While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)

SLEEP>OFF

While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)

LOCK>ACC

While turning power supply position from “LOCK” to “ACC”

ACC>ON

While turning power supply position from “ACC” to “IGN”

RUN>ACC

While turning power supply position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)

CRANK>RUN

While turning power supply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)

RUN>URGENT

While turning power supply position from “RUN“ to “ACC” (Emer-
gency stop operation)

ACC>OFF

While turning power supply position from “ACC” to “OFF”

OFF>LOCK

While turning power supply position from “OFF” to “LOCK”

OFF>ACC

While turning power supply position from “OFF” to “ACC”

ON>CRANK

While turning power supply position from “IGN” to “CRANKING”

OFF>SLEEP

While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode

LOCK>SLEEP

While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode

LOCK

Power supply position is “LOCK” (Ignition switch OFF with steer-
ing is locked.)

OFF

Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)

ACC

Power supply position is “ACC” (Ignition switch ACC)

Power supply position is “IGN” (Ignition switch ON with engine
stopped)

ENGINE RUN

Power supply position is “RUN” (Ignition switch ON with engine
running)

CRANKING

Power supply position is “CRANKING” (At engine cranking)

IGN Counter

0 - 39

The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1

→

3...38

→

39 after returning to the normal condition

whenever ignition switch OFF

→

ON.

• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

Monitor Item

Description

REAR DEF SW

Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.

PUSH SW

Indicates [ON/OFF] condition of push switch.

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

DEF-11

< SYSTEM DESCRIPTION >

DEF

Test Item

Description

REAR DEFOGGER

Give a drive signal to the rear window defogger relay to activate it.

DEF-12

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM) (WITHOUT INTELLIGENT KEY SYSTEM)

DIAGNOSIS SYSTEM (BCM) (WITHOUT INTELLIGENT KEY SYSTEM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000006706392

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

: Applicable item

• *1: This item is displayed, but is not used.

• *2: For models with automatic A/C, this mode is not used.

REAR WINDOW DEFOGGER

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

Rear window defogger

REAR DEFOGGER

Warning chime

BUZZER

Interior room lamp control

INT LAMP

Remote keyless entry system

MULTI REMOTE ENT

Exterior lamp

HEAD LAMP

Wiper and washer

WIPER

Turn signal and hazard warning lamps

FLASHER

• Automatic A/C
• Manual A/C
• Manual heater

AIR CONDITONER

Combination switch

COMB SW

Body control system

BCM

NATS

IMMU

Interior room lamp battery saver

BATTERY SAVER

Back door open

TRUNK

Vehicle security system

THEFT ALM

—

RETAINED PWR*

Signal buffer system

SIGNAL BUFFER

—

PANIC ALARM*

DIAGNOSIS SYSTEM (BCM) (WITHOUT INTELLIGENT KEY SYSTEM)

DEF-13

< SYSTEM DESCRIPTION >

DEF

REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)

INFOID:0000000006706393

Data monitor

ACTIVE TEST

Monitor Item

Description

REAR DEF SW

Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.

IGN ON SW

Indicates [ON/OFF] condition of ignition switch in ON position.

ACC ON SW

Indicates [ON/OFF] condition of ignition switch ACC position.

Test Item

Description

REAR DEFOGGER

Give a drive signal to the rear window defogger relay to activate it.

DEF-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (IPDM E/R)

DIAGNOSIS SYSTEM (IPDM E/R)

WITH INTELLIGENT KEY

WITH INTELLIGENT KEY : Diagnosis Description

INFOID:0000000006706400

AUTO ACTIVE TEST

Description

In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp (only for K9K engine models)
• Rear window defogger
• Front wiper motor
• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp
• Headlamp (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan

Operation Procedure

CAUTION:

Wiper arm interferes with food when wiper is operated while wiper arm is in the raised position.
Always perform auto active test without setting wiper arm in the raised position. Always pour water on
front windshield glass in advance to auto active test so that damage on front windshield glass surface
is prevented.

Turn the ignition switch OFF.

Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.

CAUTION:

Close passenger door.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.

CAUTION:

Engine starts when ignition switch is turned ON while brake pedal is depressed.

Oil pressure warning lamp starts blinking when the auto active test starts*. (only for K9K engine models)
*: Except for K9K engine models, oil pressure warning lamp turn ON when auto active test start.

After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:
• When auto active test mode has to be cancelled halfway through test, turn the ignition switch OFF.
• When auto active test is not activated, door switch may be the cause. Check door switch. Refer to

DLK-87,

"Component Function Check"

(with super lock) or

DLK-258, "Component Function Check"

(without super

lock).

Inspection in Auto Active Test Mode

When auto active test mode is actuated, the following operation sequence is repeated 3 times.

Operation
sequence

Inspection location

Operation

Oil pressure warning lamp

Blinks continuously during operation of auto active test
NOTE:
Except for K9K engine models, turn ON continuously during operation of auto active
test.

Rear window defogger

10 seconds

Front wiper motor

LO for 5 seconds

→

HI for 5 seconds

• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp

10 seconds

DIAGNOSIS SYSTEM (IPDM E/R)

DEF-15

< SYSTEM DESCRIPTION >

DEF

Concept of auto active test

*: Only for models with MR16DDT engine
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-

tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.

• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis chart in auto active test mode

Headlamp

LO for 10 seconds

→

HI ON

⇔

OFF 5 times

A/C compressor (magnet clutch)

⇔

OFF 5 times

Cooling fan

• LO for 5 seconds

→

HI for 5 seconds (Except for MR16DDT models)

• 50% duty for 5 seconds

→

100% duty for 5 seconds (For MR16DDT models)

Operation
sequence

Inspection location

Operation

JMMIA0564GB

Symptom

Inspection contents

Possible cause

Rear window defogger does not operate

Perform auto active test.
Does the rear window defog-
ger operate?

YES

BCM signal input circuit

• Rear window defogger
• Rear window defogger ground

circuit

• Harness or connector between

IPDM E/R and rear window de-
fogger

• IPDM E/R

Any of the following components do not operate

• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp
• Headlamp (HI, LO)
• Front wiper motor

Perform auto active test.
Does the applicable system
operate?

YES

BCM signal input circuit

• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between

IPDM E/R and applicable system

• IPDM E/R

A/C compressor does not operate

Perform auto active test.
Does the magnet clutch oper-
ate?

YES

• A/C amp. signal input circuit
• CAN communication signal be-

tween A/C amp. and ECM

• CAN communication signal be-

tween ECM and IPDM E/R

• Magnet clutch
• Harness or connector between

IPDM E/R and magnet clutch

• IPDM E/R

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