Nissan Murano Z50 (2005 year). Manual - part 49

 

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Nissan Murano Z50 (2005 year). Manual - part 49

 

 

PRECAUTIONS

BRC-3

[ABS]

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[ABS]

PRECAUTIONS

PFP:00001

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

AFS0035O

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 and SB section of this Service Man-
ual.

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 per-
formed by an authorized NISSAN/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 SRS 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 by yellow and/or orange harnesses or
harness connectors.

Precautions for Brake System

AFS001ZN

Recommended fluid is brake fluid “DOT 3”.

Do not 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.

Before working, turn ignition switch OFF and disconnect electri-
cal connectors of ABS actuator and electric control unit or bat-
tery terminals.

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 

BR-32, "BRAKE BURNISHING PROCEDURE"

 .

WARNING:

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

Precautions for Brake Control

AFS0018B

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and fluid leaks.

If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS function
may have a malfunction or error.

SBR686C

BRC-4

[ABS]

PRECAUTIONS

Revision: 2005 August

2005 Murano

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.

PREPARATION

BRC-5

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PREPARATION

PFP:00002

Commercial Service Tools

AFS0018E

Tool name

Description

1. Flare nut crowfoot
 a : 10 mm (0.39 in)
2. Torque wrench

Removing and installing each brake piping

S-NT360

BRC-6

[ABS]

SYSTEM DESCRIPTION

Revision: 2005 August

2005 Murano

SYSTEM DESCRIPTION

PFP:00000

System Diagram

AFS0018F

System Component Parts

AFS0018G

PFIA0462E

1. 

Sensor rotor (FR)

2.

Wheel sensor (FR)

3. 

Wheel sensor (FL)

4.

Sensor rotor (FL)

5.

Brake booster and Master cylinder

6.

ABS actuator and electric unit
(control unit)

7.

Sensor rotor (RR)

8.

Wheel sensor (RR)

9.

Wheel sensor (RL)

10. Sensor rotor (RL)

11.

Combination meter
[Brake warning lamp,
ABS warning lamp]

PFIA0416E

SYSTEM DESCRIPTION

BRC-7

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ABS Function

AFS0018H

The Anti-Lock Brake System is a function that detects wheel revolution while braking, and it improves
handling stability during sudden braking by electrically preventing 4 wheel lock. Maneuverability is also
improved for avoiding obstacles.

 If the electrical system malfunctions, then fail-safe function is activated, ABS becomes inoperative, and
ABS warning lamp turns on.

Electrical System Diagnosis by CONSULT-II is available.

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

EBD Function

AFS0018I

Electronic Brake Distributor is a function that detects subtle slippages between front and rear wheels dur-
ing braking, and it improves handling stability by electronically controlling Brake Fluid Pressure which
results in reduced rear wheel slippage.

In case of electrical system malfunction, fail-safe function is activated, EBD and ABS becomes inopera-
tive, and ABS warning lamp and brake warning lamp are turned on.

Electrical System Diagnosis by CONSULT-II is available.

During EBD operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

Fail-Safe Function

AFS0018J

ABS, EBD SYSTEM

In case of electrical malfunctions with ABS, ABS warning lamp will turn on. In case of electrical malfunctions
with EBD, brake warning lamp and ABS warning lamp will turn on. Simultaneously, ABS become one of follow-
ing conditions of Fail-Safe function.

1.

For ABS malfunction, only EBD is activated and condition of vehicle is same condition of vehicles without
ABS system.

2.

For EBD malfunction, EBD and ABS become inoperative, and condition of vehicle is same as condition of
vehicles without ABS, EBD system.

NOTE:
In step 1 shown above, self-diagnosis when ignition switch is turned ON and when vehicle starts at initial time
is performed. ABS self-diagnosis noise may be hard as usual.

BRC-8

[ABS]

SYSTEM DESCRIPTION

Revision: 2005 August

2005 Murano

Hydraulic Circuit Diagram

AFS0018K

PFIA0422E

CAN COMMUNICATION

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CAN COMMUNICATION

PFP:23710

System Description

AFS0029P

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. Refer to 

LAN-29, "CAN

Communication Unit"

 . 

BRC-10

[ABS]

TROUBLE DIAGNOSIS

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2005 Murano

TROUBLE DIAGNOSIS

PFP:00004

How to Perform Trouble Diagnosis for Quick and Accurate Repair

AFS0018N

INTRODUCTION

Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptom by driving vehicle with
customer.

NOTE:
Customers are not professionals. Do not assume “maybe cus-
tomer means...” or “maybe customer mentioned this symptom”.

It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.

After diagnosis, make sure to perform “erase memory”. Refer to

BRC-22, "Operation Procedure"

 .

For an intermittent malfunction, move harness or harness con-
nector by hand to check poor contact or false open circuit.

Always read “GI General Information” to confirm general precautions. Refer to 

GI-4, "General Precau-

tions"

 .

EFJ0028D

SEF233G

TROUBLE DIAGNOSIS

BRC-11

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DIAGNOSIS FLOWCHART

LFIA0175E

BRC-12

[ABS]

TROUBLE DIAGNOSIS

Revision: 2005 August

2005 Murano

ASKING COMPLAINTS

Complaints against malfunction vary depending on each person.
It is important to clarify customer complaints.

Ask customer about what symptoms are present and under
what conditions. Use information to reproduce symptom while
driving.

It is also important to use the diagnosis sheet so as not to miss
information.

EXAMPLE OF DIAGNOSIS SHEET

SBR339B

LFIA0176E

TROUBLE DIAGNOSIS

BRC-13

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Component Installation Location

AFS0018O

PFIA0425E

BRC-14

[ABS]

TROUBLE DIAGNOSIS

Revision: 2005 August

2005 Murano

Schematic — ABS —

AFS0018P

TFWA0060E

TROUBLE DIAGNOSIS

BRC-15

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Wiring Diagram — ABS —

AFS0018Q

TFWA0100E

BRC-16

[ABS]

TROUBLE DIAGNOSIS

Revision: 2005 August

2005 Murano

TFWB0035E

TROUBLE DIAGNOSIS

BRC-17

[ABS]

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BRC

Revision: 2005 August

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TFWB0036E

BRC-18

[ABS]

TROUBLE DIAGNOSIS

Revision: 2005 August

2005 Murano

TFWA0064E

 

 

 

 

 

 

 

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