Nissan Murano Z50 (2005 year). Manual — part 49
PRECAUTIONS
BRC-3
[ABS]
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BRC
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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.
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Be careful not to splash brake fluid on painted areas.
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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.
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Use flare nut wrench when removing and installing brake tube.
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Always torque brake lines when installing.
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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
[ABS]
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BRC
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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
[ABS]
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Revision: 2005 August
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ABS Function
AFS0018H
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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
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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
BRC-9
[ABS]
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BRC
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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
BRC-10
[ABS]
TROUBLE DIAGNOSIS
Revision: 2005 August
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
●
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
EFJ0028D
SEF233G
TROUBLE DIAGNOSIS
BRC-11
[ABS]
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Revision: 2005 August
2005 Murano
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
[ABS]
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BRC
Revision: 2005 August
2005 Murano
Component Installation Location
AFS0018O
PFIA0425E
BRC-14
[ABS]
TROUBLE DIAGNOSIS
Revision: 2005 August
2005 Murano
Schematic — ABS —
AFS0018P
TFWA0060E
TROUBLE DIAGNOSIS
BRC-15
[ABS]
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BRC
Revision: 2005 August
2005 Murano
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
2005 Murano
TFWB0036E
BRC-18
[ABS]
TROUBLE DIAGNOSIS
Revision: 2005 August
2005 Murano
TFWA0064E
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