Infiniti QX56 (Z62). Manual — part 678

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.

EXL-6

< SYSTEM DESCRIPTION >

[XENON TYPE]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

EXTERIOR LIGHTING SYSTEM

EXTERIOR LIGHTING SYSTEM : Component Parts Location

INFOID:0000000006213887

JMLIA1190ZZ

COMPONENT PARTS

EXL-7

< SYSTEM DESCRIPTION >

[XENON TYPE]

EXL

*1: With headlamp aiming control system (manual) models

*2: With AFS system models

EXTERIOR LIGHTING SYSTEM : Component Description

INFOID:0000000006213888

Combination meter

BCM
Refer to

BCS-4, "BODY CONTROL

SYSTEM : Component Parts Loca-
tion"

Optical sensor

IPDM E/R
Refer to

PCS-4, "Component Parts

Location"

ECM
Refer to

EC-16, "Component Parts

Location"

Parking lamp

Front turn signal lamp

Front fog lamp

Headlamp

10. Front side marker lamp

11.

Combination switch

12. Headlamp aiming switch*

13. Front door switch (driver side)

14. Steering angle sensor*

Refer to

BRC-10, "Component Parts

Location"

15. License plate lamp

16. Tail lamp

17. Rear turn signal lamp

18. Rear side marker lamp

19. Hazard switch

20. Side turn signal lamp

21. Headlamp swivel actuator

22. Headlamp aiming motor

23. AFS switch*

24. Rear height sensor*

25. AFS control unit*

26. Front height sensor*

Front combination lamp (back)

View with instrument driver lower
panel (LH)

Rear suspension member (RH)

View with instrument lower cover

Front suspension arm (RH)

Part

Description

BCM

Controls the exterior lighting system.

ECM*

Transmits engine speed signal to AFS control unit. (via CAN communication)

TCM*

Transmits Shift position signal to AFS control unit. (via CAN communication)

IPDM E/R

Controls the integrated relay, and supplies voltage to the load according to the request
from BCM (via CAN communication).

AFS control unit*

AFS control unit judges the vehicle condition from each signal. AFS control unit con-
trols AFS function and the headlamp aiming.

Combination meter

• Outputs the vehicle speed signal (8-pulse) to AFS control unit.
• Blinks the turn signal indicator lamp and outputs the turn signal operating sound with

integrated buzzer according to the request from BCM (via CAN communication).

• Turns the tail lamp indicator lamp and high beam indicator lamp ON according to the

request from BCM (via CAN communication).

• Turns the AFS OFF indicator lamp ON/OFF/blinking according to the request from

AFS control unit (via CAN communication).

Headlamp assembly

Xenon bulb

Refer to

EXL-8, "FRONT COMBINATION LAMP : Xenon Headlamp"

HID control unit

Refer to

EXL-9, "FRONT COMBINATION LAMP : HID control unit"

High beam solenoid

Refer to

EXL-9, "FRONT COMBINATION LAMP : High Beam Solenoid"

Aiming motor

Refer to

EXL-9, "FRONT COMBINATION LAMP : Aiming Motor"

Swivel actuator*

Refer to

EXL-9, "FRONT COMBINATION LAMP : Swivel Actuator"

Height sensor*

• The height sensor is installed to the front suspension member and rear suspension

member.

• The height sensor detects the suspension arm displacement as the vehicle height

change.

• The height sensor transmits the height sensor signal to AFS control unit.
NOTE:
The sensor angle of the unloaded vehicle position is the reference value.

Optical sensor

Optical sensor converts the outside brightness (lux) to voltage and transmits the opti-
cal sensor signal to BCM.

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Infiniti QX56 (Z62). Manual — part 678

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