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Infiniti QX56 (Z62). Manual - part 308

DAS

FCW SYSTEM IS NOT ACTIVATED

DAS-269

< SYMPTOM DIAGNOSIS >

[FCW]

FCW SYSTEM IS NOT ACTIVATED

Description

INFOID:0000000006223693

FCW system does not operate by pressing the warning systems switch.
NOTE:
Warning systems switch is shared with LDW/BSW system.

Diagnosis Procedure

INFOID:0000000006223694

PERFORM THE SELF-DIAGNOSIS

Perform “All DTC Reading” with CONSULT-III.

Check if the DTC is detected in self-diagnosis results of “ICC/ADAS”. Refer to

DAS-244, "DTC Index"

Is any DTC detected?

YES

>> GO TO 3.

>> GO TO 2.

CHECK WARNING SYSTEMS SWITCH CIRCUIT

Check warning systems switch circuit. Refer to

DAS-389, "Component Function Check"

NOTE:
Warning systems switch is shared with LDW/BSW system.
Is the inspection result normal?

YES

>> Replace the ADAS control unit.

>> GO TO 3.

REPAIR OR REPLACE THE SPECIFIC ITEMS

Repair or replace malfunctioning items.

>> INSPECTION END

DAS-270

< SYMPTOM DIAGNOSIS >

[FCW]

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000006223695

PRECAUTIONS FOR FORWARD COLLISION WARNING (FCW)

• FCW system is intended to warn the driver before a collision but will not avoid a collision. It is the drive's

responsibility to stay alert, drive safely and be in control of the vehicle at all times.

• As there is a performance limit, the FCW system may not provide a warning in certain conditions.
• The FCW system will not detect the following objects.
- Pedestrians, animals, or obstacles in the roadway.
- Oncoming vehicles in the same lane
• FCW system will not detect under the following conditions.
- When the sensor gets dirty, it is impossible to detect the distance from the vehicle ahead.
- When driving into a strong light (i.e. sunlight)
• The sensor generally detects signals returned from the reflectors on a vehicle ahead. Therefore, the FCW

system may not warn properly under the following conditions:

- When the reflectors of the vehicle ahead are positioned high or close to each other (including a small vehicle

such as motorcycles).

- When the sensor gets dirty or it is impossible to detect the distance to the vehicle ahead.
- When the reflectors on the vehicle ahead is missing, damaged or covered.
- When the reflector of the vehicle ahead is covered with dirt, snow or road spray.
- When visibility is low (such as rain, fog, snow, etc.).
- When snow or road spray from traveling vehicles are splashed.
- When dense exhaust or other smoke (black smoke) from vehicles reduces the visibility of the sensor.
- When excessively heavy baggage is loaded in the rear seat or the trunk room of own vehicle.
- When abruptly accelerating or decelerating.
- On steep downhill or roads with sharp curves.
- When there is a highly reflective object near the vehicle ahead.

i.e.) very close to other vehicle, signboard, etc.

- When own vehicle are towing a trailer.
• Depending on certain road conditions (curved, beginning of a curve), vehicle conditions (steering position,

vehicle position), or preceding vehicle's conditions (position in lane, etc.), the FCW system may not function
properly. The FCW system may detect highly reflective objects such as reflectors, signs, white markers, and
other stationary objects on the road or near the traveling lane, and provide unnecessary warning.

• The FCW system may not function in offset conditions.
• The FCW system may not function when the distance to the vehicle ahead is extremely close.
• The FCW system is designed to automatically check the sensor's functionality. If the sensor is covered with

ice, a transparent or translucent plastic bag, etc., the system may not detect them. In these instances the
FCW system may not be able to warn properly. Be sure to check and clean the sensor regularly.

• Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
• A sudden appearance of the vehicle in front (i.e.: when a vehicle abruptly cuts in) may not be detected and

the system may not warn soon enough.

• The FCW system will be canceled automatically with a chime sound and the IBA OFF indicator light will illu-

minate under the following conditions:

- When the sensor window is dirty
- When the FCW system malfunctions

DAS

WARNING SYSTEMS SWITCH

DAS-271

< REMOVAL AND INSTALLATION >

[FCW]

REMOVAL AND INSTALLATION

WARNING SYSTEMS SWITCH

Removal and Installation

INFOID:0000000006223696

REMOVAL

Remove the instrument lower panel (LH). Refer to

IP-14, "Removal and Installation"

Remove warning systems switch from instrument driver lower panel.

NOTE:
Warning systems switch and automatic back door switch are integrated.

INSTALLATION

Install in the reverse order of removal.

DAS-272

< PRECAUTION >

[LDW & LDP]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000006223697

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.

Precautions For Harness Repair

INFOID:0000000006223698

ITS communication uses a twisted pair line. Be careful when repairing it.
• Solder the repaired area and wrap tape around the soldered area.

NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).

SKIB8766E

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