Murano Cross Cabriolet Z51 (2013 year). Manual — part 98
ST-54
< REMOVAL AND INSTALLATION >
HYDRAULIC LINE
• Never apply fluid to the hose (1) and tube (2).
• Insert hose securely until it contacts spool (A) of tube.
• Leave clearance (L) when installing clamp (3).
• Install eye bolt with eye joint (assembled to high pressure
hose) (B) protrusion (A) facing with pump side cutout, and
then tighten it to the specified torque after tightening by hand.
Refer to
• Securely insert harness connector to pressure sensor.
• Apply power steering fluid to around copper washer, then
install eye bolt.
• Never reuse copper washer.
Standard
L
: 3 – 8 mm (0.12 – 0.31 in)
JSGIA0118ZZ
SGIA1379E
Revision: 2012 October
2013 Murano CrossCabriolet
HEATED STEERING WHEEL SWITCH
ST-55
< REMOVAL AND INSTALLATION >
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HEATED STEERING WHEEL SWITCH
Removal and Installation
INFOID:0000000008461748
REMOVAL
1.
Remove Instrument lower panel LH. Refer to
IP-13, "Removal and Installation"
2.
Remove heated steering wheel switch.
INSTALLATION
Install in the reverse order of removal.
Revision: 2012 October
2013 Murano CrossCabriolet
ST-56
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
INFOID:0000000008461749
Steering Wheel Axial End Play and Play
INFOID:0000000008461750
Unit: mm (in)
Steering Wheel Turning Force
INFOID:0000000008461751
Unit: N·m (kg-m, in-lb)
Steering Angle
INFOID:0000000008461752
Unit: Degree minute (Decimal degree)
Steering Column Length
INFOID:0000000008461753
Unit: mm (in)
Steering Column Mounting Dimensions
INFOID:0000000008461754
Unit: mm (in)
Steering Column Operating Range
INFOID:0000000008461755
Steering gear model
PR26AF
Fluid capacity (Approx.)
(US qt, lmp qt)
1.0 (1-1/8, 7/8)
Item
Standard
Steering wheel axial end play
0 (0)
Steering wheel play on the outer circumference
0 – 35 (0 – 1.38)
Item
Standard
Steering wheel turning force
7.45 (0.76, 66)
Item
Standard
Inner wheel
Minimum
32
°
00
′
(32.0
°
)
Nominal
35
°
00
′
(35.0
°
)
Maximum
36
°
00
′
(36.0
°
)
Outer wheel
Nominal
30
°
30
′
(30.5
°
)
Item
Standard
Steering column length
463 (18.23)
Item
Standard
Mounting dimension
30 (1.18) or less
Item
Standard
Tilt operating range
18
°
Telescopic operating range
40 mm (1.57 in)
Rotating torque
0.49 N·m (0.05 kg-m, 4 in-lb)
Revision: 2012 October
2013 Murano CrossCabriolet
SERVICE DATA AND SPECIFICATIONS (SDS)
ST-57
< SERVICE DATA AND SPECIFICATIONS (SDS)
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Lower Shaft Length
INFOID:0000000008461756
Unit: mm (in)
Rack Sliding Force
INFOID:0000000008461757
Unit: N (kg, lb)
Rack Stroke
INFOID:0000000008461758
Unit: mm (in)
Socket Swing Force and Rotating Torque
INFOID:0000000008461759
SWING FORCE
Unit: N (kg, lb)
ROTATING TORQUE
Unit: N·m (kg-m, in-lb)
Socket Axial End Play
INFOID:0000000008461760
Unit: mm (in)
Inner Socket Length
INFOID:0000000008461761
Unit: mm (in)
Relief Oil Pressure
INFOID:0000000008461762
Unit: kPa (kg/cm
2
, psi)
Item
Standard
Lower shaft length
160 (6.3) or more
Item
Standard
Rack sliding force
227 – 305 (23.2 – 31.1, 51.1 – 68.5)
Item
Standard
Rack stroke neutral position
68.0 (2.677)
Item
Standard
Outer socket
4.81 – 45.7 (0.5 – 4.6, 1.1 – 10.2)
Inner socket
8.9 – 64 (0.91 – 6.5, 2.01 – 14.3)
Item
Standard
Outer socket
0.3 – 2.9 (0.03 – 0.29, 3 – 25)
Item
Standard
Outer socket
0.5 (0.02) or less
Inner socket
0.2 (0.008) or less
Item
Standard
Inner socket length
120.3 (4.74)
Item
Standard
Relief oil pressure
9,500 – 10,300 (96.9 – 105.1, 1,378 – 1,494)
Revision: 2012 October
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STC-1
STEERING
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SECTION
STC
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STC
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CONTENTS
STEERING CONTROL SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Battery Service . . . . . . . . ..
Service Procedure Precautions for Models with a
Pop-up Roll Bar . . . . . . . . . . . . . .....
SYSTEM DESCRIPTION . . . . . . . ..
COMPONENT PARTS . . . . . . . . . .
Component Parts Location . . . . . . . . . ....
Component Description . . . . . . . . . . .....
Power Steering Control Unit . . . . . . . . . ..
Power Steering Solenoid Valve . . . . . . . .....
SYSTEM . . . . . . . . . . . . . . . ..
EPS SYSTEM . . . . . . . . . . . . . . . ..
EPS SYSTEM : System Diagram . . . . . . . ..
EPS SYSTEM : System Description . . . . . .....
EPS SYSTEM : Fail-Safe . . . . . . . . . . ..
ECU DIAGNOSIS INFORMATION . . . ...
POWER STEERING CONTROL UNIT . . . .
Reference Value . . . . . . . . . . . . . ...
Fail-Safe . . . . . . . . . . . . . . . . ....
WIRING DIAGRAM . . . . . . . . . ...
POWER STEERING CONTROL SYSTEM . . .
Wiring Diagram - ELECTRONICALLY CON-
TROLLED POWER STEERING SYSTEM - . . . ..
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORK FLOW . ...
Work Flow . . . . . . . . . . . . . . . .
DTC/CIRCUIT DIAGNOSIS . . . . . . .
POWER SUPPLY AND GROUND CIRCUIT .
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
POWER STEERING SOLENOID VALVE . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . . .
ENGINE SPEED SIGNAL CIRCUIT . . . . ..
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
VEHICLE SPEED SIGNAL CIRCUIT . . . .
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
SYMPTOM DIAGNOSIS . . . . . . . ..
UNBALANCE STEERING WHEEL TURNING
FORCE (TORQUE VARIATION) . . . . . ...
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ...
POWER STEERING CONTROL UNIT . . . ..
Removal and Installation . . . . . . . . . . .
Revision: 2012 October
2013 Murano CrossCabriolet
STC-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000008461618
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:
Always observe the following items for preventing accidental activation.
• 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 “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never 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 for Battery Service
INFOID:0000000008461619
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Service Procedure Precautions for Models with a Pop-up Roll Bar
INFOID:0000000008461620
WARNING:
Always observe the following items for preventing accidental activation.
• Risk of passenger injury or death may increase if the pop-up roll bar does not deploy during a roll
over collision. In order to reduce the chance of an incident where the pop-up roll bar is inoperative,
all maintenance must be performed by a NISSAN or INFINITI dealer.
• Before removing and installing the pop-up roll bar component parts and harness, always turn the
ignition switch OFF, disconnect the battery negative terminal, and wait for 3 minutes or more. (The
purpose of this operation is to discharge electricity that is accumulated in the auxiliary power supply
circuit in the air bag diagnosis sensor unit.)
• When repairing, removing, and installing a pop-up roll bar, always refer to SRS AIR BAG and SRS
AIR BAG CONTROL warnings in the Service Manual.
Revision: 2012 October
2013 Murano CrossCabriolet
COMPONENT PARTS
STC-3
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000008461621
Component Description
INFOID:0000000008461622
Power Steering Control Unit
INFOID:0000000008461623
• Signals from various sensors control the driving voltage to power steering solenoid valve.
• Power steering control unit controls the driving voltage to power steering solenoid valve for maintaining the
power steering assist force when the fail-safe function is activated. (The engine speed signals control EPS
system if any vehicle speed signal error is detected.)
Power Steering Solenoid Valve
INFOID:0000000008461624
Power steering solenoid valve controls the power steering oil pressure in the gear housing assembly.
1.
Power steering solenoid valve
2.
Power steering control unit
A.
Steering gear assembly
B.
Glove box assembly removed
: Vehicle front
JSGIA0301ZZ
Component parts
Reference/Function
Power steering control unit
STC-3, "Power Steering Control Unit"
Combination meter
ECM
Power steering solenoid valve
STC-3, "Power Steering Solenoid Valve"
Revision: 2012 October
2013 Murano CrossCabriolet
STC-4
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
EPS SYSTEM
EPS SYSTEM : System Diagram
INFOID:0000000008461625
CONTROL DIAGRAM
CROSS-SECTIONAL VIEW
EPS SYSTEM : System Description
INFOID:0000000008461626
• The EPS system controls the power steering solenoid valve through the power steering control unit.
JSGIA0119GB
1.
Combination meter
2.
Power steering control unit
3.
Power steering solenoid valve
4.
Steering gear assembly
5.
Gear housing assembly
6.
Gear sub-assembly
7.
Pinion
8.
Power steering oil pump
9.
Reservoir tank
JSGIA0376ZZ
Revision: 2012 October
2013 Murano CrossCabriolet
SYSTEM
STC-5
< SYSTEM DESCRIPTION >
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• The valve driving voltage to control the power steering solenoid
valve varies according to the vehicle speed.
OPERATION PRINCIPLE
During Parking (When Turning The Steering Wheel To The Right.)
1.
Power steering solenoid valve is closed while a vehicle is stopped.
2.
Pinion “1R”, “2R” and “3R” are closed depending on steering torque of steering wheel.
3.
Oil pressure “P” in the gear housing assembly is the sum of oil pressures occurred in “2R” and “3R”. This
results in a light steering force because of high pressure.
During High-speed Operation
1.
Power steering solenoid valve is opened during high-speed operation.
2.
Pinion “1R”, “2R” and “3R” are closed depending on steering torque of steering wheel.
3.
Oil pressure “2R” does not occur because the power steering solenoid valve is on full throttle.
4.
Oil pressure “P” in the gear housing assembly includes only oil pressure occurred in “3R” and results in a
heavy steering force.
EPS SYSTEM : Fail-Safe
INFOID:0000000008461627
EPS system
JSGIA0374GB
JSGIA0020GB
JSGIA0021GB
Revision: 2012 October
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STC-6
< SYSTEM DESCRIPTION >
SYSTEM
• EPS system enters the fail-safe mode (that allows the steering
force to be controlled without impairing the drivability) if any of the
input/output values to/from EPS system (power steering control
unit) deviate from the standard range.
NOTE:
The system enters the fail-safe mode if the engine speed remains
at 1,500 rpm or more for over 10 seconds while the vehicle is
stopped. This is normal.
• The fail-safe function is canceled when a vehicle speed signal of 2
km/h (1.2 MPH) or more is inputted or the ignition switch is turned
OFF
→
ON. EPS system restores the normal operation at that time.
JSGIA0368GB
Mode
Warn-
ing lamp
DTC
Detection point (malfunction part)
Error area and root cause
Fail-safe
function
—
—
Vehicle speed signal input
• Engine speed is 1,500 rpm or more and there is no vehicle
speed signal input for over 10 seconds during vehicle travel.
• Vehicle speed signal has abruptly dropped from 30 km/h (19
MPH) or more to 2 km/h (1.2 MPH) or less within 1.4 sec-
onds.
Revision: 2012 October
2013 Murano CrossCabriolet
POWER STEERING CONTROL UNIT
STC-7
< ECU DIAGNOSIS INFORMATION >
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ECU DIAGNOSIS INFORMATION
POWER STEERING CONTROL UNIT
Reference Value
INFOID:0000000008461628
TERMINAL LAYOUT
PHYSICAL VALUES
JSGIA0023ZZ
Terminal No.
(Wire color)
Description
Condition
Value (Approx.)
+
-
Signal name
Input/
Output
1
(Y)
Ground
Power steering solenoid
valve voltage
Output
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
4.4 – 6.6 V
Vehicle speed: 100 km/h (62 MPH)
2.4 – 3.6 V
3
(G)
Ground
Ignition switch power
supply
Input
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
5
(LG)
Ground
Power steering solenoid
valve ground
—
Always
0 V
6
(B)
Ground
Ground
—
Always
0 V
8
(P)
Ground
Vehicle speed signal
Input
Vehicle speed: 40 km/h (25 MPH)
CAUTION:
Check air pressure of tire under
standard condition.
NOTE:
The maximum voltage varies de-
pending on the specification
(destination unit).
JSNIA0015GB
Revision: 2012 October
2013 Murano CrossCabriolet
STC-8
< ECU DIAGNOSIS INFORMATION >
POWER STEERING CONTROL UNIT
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to forcibly extend any connector ter-
minals.
Fail-Safe
INFOID:0000000008461629
EPS system
• EPS system enters the fail-safe mode (that allows the steering
force to be controlled without impairing the drivability) if any of the
input/output values to/from EPS system (power steering control
unit) deviate from the standard range.
NOTE:
The system enters the fail-safe mode if the engine speed remains
at 1,500 rpm or more for over 10 seconds while the vehicle is
stopped. This is normal.
• The fail-safe function is canceled when a vehicle speed signal of 2
km/h (1.2 MPH) or more is inputted or the ignition switch is turned
OFF
→
ON. EPS system restores the normal operation at that time.
10
(V)
Ground
Engine speed signal
Input
Engine is running
• Warm-up condition
• Idle speed
Engine is running
• Warm-up condition
• Engine speed: Approx. 2,000 rpm
Terminal No.
(Wire color)
Description
Condition
Value (Approx.)
+
-
Signal name
Input/
Output
JMBIA0076GB
JMBIA0077GB
JSGIA0368GB
Mode
Warn-
ing lamp
DTC
Detection point (malfunction part)
Error area and root cause
Fail-safe
function
—
—
Vehicle speed signal input
• Engine speed is 1,500 rpm or more and there is no vehicle
speed signal input for over 10 seconds during vehicle travel.
• Vehicle speed signal has abruptly dropped from 30 km/h (19
MPH) or more to 2 km/h (1.2 MPH) or less within 1.4 sec-
onds.
Revision: 2012 October
2013 Murano CrossCabriolet
POWER STEERING CONTROL SYSTEM
STC-9
< WIRING DIAGRAM >
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WIRING DIAGRAM
POWER STEERING CONTROL SYSTEM
Wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM -
INFOID:0000000008461630
For connector terminal arrangements, harness layouts, and alphabets in a
(option abbreviation; if not
described in wiring diagram), refer to
GI-12, "Connector Information"
JCGWA0351GB
Revision: 2012 October
2013 Murano CrossCabriolet
STC-10
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000008461631
DETAILED FLOW
1.
COLLECT THE INFORMATION FROM THE CUSTOMER
It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms and
understand them fully. Ask customer about his/her complaints carefully. In some cases, it is necessary to
check symptoms by driving vehicle with customer.
CAUTION:
Customers are not professional. It is dangerous to make an easy guess like “maybe the customer
means that...,” or “maybe the customer mentions this symptom”.
>> GO TO 2.
2.
CHECK THE STATUS
1.
Power steering fluid leakage and check the power steering fluid level. Refer to
2.
Check the drive belt tension. Refer to
.
3.
Check the power steering gear for damages, cracks and fluid leakage. Refer to
4.
Check the relief oil pressure. Refer to
>> GO TO 3.
3.
DIAGNOSIS CHART BY SYMPTOM
Perform the diagnosis by symptom. Refer to
>> GO TO 4.
4.
FINAL CHECK
Check the input/output standard values for the power steering control unit.
Are the power steering control unit input/output values within standard ranges respectively?
YES
>> INSPECTION END
NO
>> GO TO 2.
Revision: 2012 October
2013 Murano CrossCabriolet
POWER SUPPLY AND GROUND CIRCUIT
STC-11
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Description
INFOID:0000000008461632
Power supply to EPS system
Diagnosis Procedure
INFOID:0000000008461633
1.
CHECK POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Disconnect power steering control unit harness connector.
3.
Check voltage between power steering control unit harness connector and ground.
4.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
5.
Check voltage between power steering control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>>
Check the following. If any items are damaged, repair or replace damaged parts.
• 10A fuses (#3) open
- Harness for short or open between ignition switch and power steering control unit harness con-
nector No. 3 terminal.
- Ignition switch. Refer to
PCS-66, "Component Inspection"
.
2.
CHECK GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check continuity between power steering control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to power in harness or connectors.
3.
CHECK TERMINALS AND HARNESS CONNECTORS
Check power steering control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace damaged parts.
Power steering control unit
—
Voltage
(Approx.)
Connector
Terminal
M61
3 Ground
0
V
Power steering control unit
—
Voltage
(Approx.)
Connector
Terminal
M61
3 Ground
Battery
voltage
Power steering control unit
—
Continuity
Connector
Terminal
M61
6 Ground
Existed
Revision: 2012 October
2013 Murano CrossCabriolet
STC-12
< DTC/CIRCUIT DIAGNOSIS >
POWER STEERING SOLENOID VALVE
POWER STEERING SOLENOID VALVE
Diagnosis Procedure
INFOID:0000000008461634
1.
CHECK POWER STEERING SOLENOID VALVE SIGNAL
Check voltage between power steering control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN POWER STEERING SOLENOID VALVE AND POWER STEERING CON-
TROL UNIT
1.
Turn the ignition switch OFF.
2.
Disconnect power steering solenoid valve harness connector.
3.
Disconnect power steering control unit harness connector.
4.
Check the continuity between power steering solenoid valve harness connector and the power steering
control unit harness connector.
5.
Check continuity between power steering control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK POWER STEERING SOLENOID VALVE
Check power steering solenoid valve. Refer to
STC-13, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace gear-sub assembly. Refer to
4.
CHECK TERMINALS AND HARNESS CONNECTORS
• Check power steering control unit pin terminals for damage or loose connection with harness connector.
• Check power steering solenoid valve pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace damaged parts.
Power steering control unit
—
Condition
Voltage
(Approx.)
Connector
Terminal
M61
1
Ground
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
4.4 – 6.6 V
Vehicle speed: 100 km/h (62 MPH)
2.4 – 3.6 V
Power steering solenoid valve
Power steering control unit
Continuity
Connector
Terminal
Connector
Terminal
E52
1
M61
1
Existed
E52
2
M61
5
Existed
Power steering control unit
—
Continuity
Connector
Terminal
M61
1
Ground
Not existed
M61
5
Revision: 2012 October
2013 Murano CrossCabriolet
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