Murano Cross Cabriolet Z51 (2012 year). Manual — part 101
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ENGINE
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SECTION
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CONTENTS
STARTING SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Battery Service . . . . . . . . ..
Service Procedure Precautions for Models with a
Pop-up Roll Bar . . . . . . . . . . . . . .....
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tools . . . . . . . . . . . ....
Commercial Service Tools . . . . . . . . . ....
SYSTEM DESCRIPTION . . . . . . . ..
COMPONENT PARTS . . . . . . . . . .
STARTING SYSTEM . . . . . . . . . . . . ...
STARTING SYSTEM : Component Parts Location
. ..
STARTING SYSTEM : Component Description . ...
SYSTEM . . . . . . . . . . . . . . . ..
STARTING SYSTEM . . . . . . . . . . . . ...
STARTING SYSTEM : System Diagram . . . . ...
STARTING SYSTEM : System Description . . . ..
WIRING DIAGRAM . . . . . . . . . ...
STARTING SYSTEM . . . . . . . . . . ...
Wiring Diagram . . . . . . . . . . . . . .....
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORK FLOW . .
Work Flow (With GR8-1200 NI) . . . . . . . ....
Work Flow (Without GR8-1200 NI) . . . . . . ..
DTC/CIRCUIT DIAGNOSIS . . . . . . .
B TERMINAL CIRCUIT . . . . . . . . . .
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
S CONNECTOR CIRCUIT . . . . . . . . .
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
SYMPTOM DIAGNOSIS . . . . . . . ..
STARTING SYSTEM . . . . . . . . . . .
Symptom Table . . . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ...
STARTER MOTOR . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Starter Motor . . . . . . . . . . . . . . ...
Revision: 2013 February
2012 Murano CrossCabriolet
STR-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000007563560
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:0000000007563561
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:0000000007563562
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: 2013 February
2012 Murano CrossCabriolet
PREPARATION
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< PREPARATION >
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PREPARATION
PREPARATION
Special Service Tools
INFOID:0000000009347646
Commercial Service Tools
INFOID:0000000007563564
Tool number
(Kent-Moore No.)
Tool name
Description
—
(—) Model GR8-1200 NI
Multitasking battery and electrical di-
agnostic station
Tests batteries, starting and charging sys-
tems and charges batteries.
For operating instructions, refer to diagnos-
tic station instruction manual.
AWIIA1239ZZ
Tool name
Description
Power tool
Loosening bolts, nuts and screws
PIIB1407E
Revision: 2013 February
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< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
STARTING SYSTEM
STARTING SYSTEM : Component Parts Location
INFOID:0000000007563565
STARTING SYSTEM : Component Description
INFOID:0000000007563566
1.
Starter motor
2.
BCM
Refer to
SYSTEM : Component Parts Loca-
tion"
3.
SYSTEM : Component Parts Loca-
tion"
4.
A.
Cylinder block left side
B.
Behind the combination meter
C.
Engine room dash panel (LH)
JPBIA1756ZZ
Component part
Description
TCM
TCM supplies power to the starter relay and starter control relay
inside IPDM E/R when the selector lever is shifted to the P or N
position.
BCM
BCM controls the starter relay inside IPDM E/R.
IPDM E/R
CPU inside IPDM E/R controls the starter control relay.
Starter motor
The starter motor plunger closes and the motor is supplied with
battery power, which in turn cranks the engine, when the “S” ter-
minal is supplied with electric power.
Revision: 2013 February
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SYSTEM
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< SYSTEM DESCRIPTION >
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SYSTEM
STARTING SYSTEM
STARTING SYSTEM : System Diagram
INFOID:0000000007563567
STARTING SYSTEM : System Description
INFOID:0000000007563568
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.
JPBIA1665GB
Revision: 2013 February
2012 Murano CrossCabriolet
STR-6
< WIRING DIAGRAM >
STARTING SYSTEM
WIRING DIAGRAM
STARTING SYSTEM
Wiring Diagram
INFOID:0000000007563569
JCBWM1068GB
Revision: 2013 February
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DIAGNOSIS AND REPAIR WORK FLOW
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< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow (With GR8-1200 NI)
INFOID:0000000009347655
STARTING SYSTEM DIAGNOSIS WITH GR8-1200 NI
To test the starting system, use the following special service tool:
• GR8-1200 NI Multitasking battery and electrical diagnostic station
NOTE:
Refer to the diagnostic station Instruction Manual for proper starting system diagnosis procedures.
Revision: 2013 February
2012 Murano CrossCabriolet
STR-8
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
OVERALL SEQUENCE
DETAILED FLOW
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter motor and alternator test segments must be
done as a set from start to finish.
1.
DIAGNOSIS WITH MULTITASKING BATTERY AND ELECTRICAL DIAGNOSTIC STATION GR8-1200 NI
JMBIA4453GB
Revision: 2013 February
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DIAGNOSIS AND REPAIR WORK FLOW
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< BASIC INSPECTION >
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Perform the starting system test with Multitasking battery and electrical diagnostic station GR8-1200 NI. For
details and operating instructions, refer to diagnostic station Instruction Manual.
Test result
CRANKING NORMAL>>GO TO 2.
LOW VOLTAGE>>GO TO 5.
CHARGE BATTERY>>Perform the slow battery charging procedure. (Initial rate of charge is 10A for 12
hours.) Perform battery test again. Refer to diagnostic station instruction manual.
REPLACE BATTERY>>Before replacing battery, clean the battery cable clamps and battery posts. Perform
battery test again. Refer to diagnostic station instruction manual. If second test result is
“REPLACE BATTERY”, then do so. Perform battery test again to confirm repair.
2.
CRANKING CHECK
Check that the starter motor operates correctly.
Does the engine crank normally?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
ENGINE START CHECK
Check that the engine starts.
Does the engine start?
YES
>> Starter motor is OK. INSPECTION END
NO
>> Perform further diagnosis of engine mechanical or engine control system. Refer EM and EC sec-
tions. Once resolved, perform battery test again.
4.
STARTER MOTOR ACTIVATION
Check that the starter motor operates.
Does the starter motor turn?
YES
>> Check ring gear and starter motor drive pinion. Once resolved, perform battery test again.
NO
>> GO TO 7.
5.
COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE
Compare the engine coolant temperature and the cranking voltage with the specifications.
Minimum Specification of Cranking Voltage Referencing Coolant Temperature
Is the voltage less than the specified value?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
STARTER OPERATION
Check the starter operation status.
Does the starter motor turn smoothly?
YES
>> Starter motor is OK. INSPECTION END
NO
>> GO TO 7.
7.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
.
Is “B” terminal circuit normal?
YES
>> GO TO 8.
NO
>> Repair as needed.
8.
“S” CONNECTOR CIRCUIT INSPECTION
Check “S” connector circuit. Refer to
.
Engine coolant temperature [
°
C (
°
F)]
Voltage [V]
−
30 to
−
20 (
−
22 to
−
4)
8.6
−
19 to
−
10 (
−
2 to 14)
9.1
−
9 to 0 (16 to 32)
9.5
More than 1 (More than 34)
9.9
Revision: 2013 February
2012 Murano CrossCabriolet
STR-10
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
Is “S” connector circuit normal?
YES
>> GO TO 9.
NO
>> Repair as needed.
9.
ENGINE ROTATION STATUS
Check that the engine can be rotated by hand.
Does the engine turn freely by hand?
YES
>> Replace starter motor. Refer to
STR-16, "Removal and Installation"
NO
>> Perform further diagnosis of engine mechanical or powertrain mechanism. Once resolved, per-
form battery test again using Multitasking battery and electrical diagnostic station GR8-1200 NI.
Refer to the diagnostic station Instruction Manual for proper testing procedures.
Work Flow (Without GR8-1200 NI)
INFOID:0000000009347656
OVERALL SEQUENCE
DETAILED FLOW
NOTE:
If any malfunction is found, immediately disconnect the battery cable from the negative terminal.
1.
CHECK ENGINE START
Crank the engine and check that the engine starts.
Does the engine start?
YES
>> GO TO 2.
JMBIA4454GB
Revision: 2013 February
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DIAGNOSIS AND REPAIR WORK FLOW
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< BASIC INSPECTION >
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NO
>> GO TO 3.
2.
CHECK THAT THE STARTER MOTOR STOPS
Check that the starter motor stops after starting the engine.
Does the starter motor stop?
YES
>> INSPECTION END
NO
>> Replace starter motor. Refer to
STR-16, "Removal and Installation"
3.
CHECK THAT THE ENGINE TURNS WHEN CRANKING
Check that the engine turns when cranking.
Does engine turn when cranking?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK THE ENGINE SPEED WHEN CRANKING
Check that the engine speed is not low when cranking.
Does engine turn normally?
YES
>> Check ignition/fuel system.
NO
>> Check charge condition, corrosion and connection condition of the battery. Refer to
.
5.
CHECK STARTER MOTOR ACTIVATION
Check that the starter motor runs at cranking.
Does starter motor turn?
YES
>> Replace starter motor. Refer to
STR-16, "Removal and Installation"
NO
>> GO TO 6.
6.
CHECK POWER SUPPLY CIRCUIT
Check the following conditions.
• Fuse and fusible link
• Charge condition, corrosion and connection condition of the battery. Refer to
Are these inspection results normal?
YES
>> GO TO 7.
NO
>> Repair as needed.
7.
CHECK STARTING SYSTEM WIRING
Check the following.
• “B” terminal circuit. Refer to
.
• “S” connector circuit. Refer to
.
Are these inspection results normal?
YES
>> Replace starter motor. Refer to
STR-16, "Removal and Installation"
NO
>> Repair as needed.
Revision: 2013 February
2012 Murano CrossCabriolet
STR-12
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
DTC/CIRCUIT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000007563571
The “B” terminal is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000007563572
CAUTION:
Before perform diagnosis, do the following procedure until engine cannot be started.
1.
Remove fuel pump fuse.
2.
Crank or start the engine (where possible) until the fuel pressure is released.
1.
CHECK “B” TERMINAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Check that starter motor “B” terminal connection is clean and tight.
3.
Check voltage between starter motor “B” terminal and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check harness between battery and starter motor for open circuit.
2.
CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)
1.
Shift the selector lever to “P” or “N” position.
2.
Check voltage between battery positive terminal and starter motor “B” terminal.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between the battery and the starter motor for poor continuity.
3.
CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1.
Shift the selector lever to “P” or “N” position.
2.
Check voltage between starter motor case and battery negative terminal.
Is the inspection result normal?
YES
>> “B” terminal circuit is OK. Further inspection is necessary. Refer to
or
STR-10, "Work Flow (Without GR8-1200 NI)"
.
NO
>> Check the starter motor case and ground for poor continuity.
Terminals
Voltage (Approx.)
(+)
(–)
Starter motor “B” terminal
Terminal
F10
2 Ground
Battery
voltage
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor
“B” terminal
Terminal
Battery positive terminal
F10
2
When the ignition switch is
in START position
Less than
0.5 V
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor case
Battery negative terminal
When the ignition switch is in
START position
Less than 0.2 V
Revision: 2013 February
2012 Murano CrossCabriolet
S CONNECTOR CIRCUIT
STR-13
< DTC/CIRCUIT DIAGNOSIS >
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S CONNECTOR CIRCUIT
Description
INFOID:0000000007563573
The starter motor magnetic switch is supplied with power when the ignition switch is turned to the START posi-
tion while the selector lever is in the P or N position.
Diagnosis Procedure
INFOID:0000000007563574
CAUTION:
Before perform diagnosis, do the following procedure until engine cannot be started.
1.
Remove fuel pump fuse.
2.
Crank or start the engine (where possible) until the fuel pressure is released.
1.
CHECK “S” CONNECTOR CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect starter motor connector.
3.
Shift the selector lever to “P” or “N” position.
4.
Check voltage between starter motor harness connector and ground.
Is the inspection result normal?
YES
>> “S” connector circuit is OK. Further inspection is necessary. Refer to
STR-10, "Work Flow (Without GR8-1200 NI)"
NO
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect IPDM E/R connector.
2.
Check continuity between starter motor harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES
>> Further inspection is necessary. Refer to
NO
>> Repair the harness.
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor har-
ness connector
Terminal
F47
1 Ground
When the ignition switch is in
START position
Battery voltage
Starter motor harness connector
IPDM E/R harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F47
1
F12
80
Existed
Revision: 2013 February
2012 Murano CrossCabriolet
STR-14
< SYMPTOM DIAGNOSIS >
STARTING SYSTEM
SYMPTOM DIAGNOSIS
STARTING SYSTEM
Symptom Table
INFOID:0000000007563575
Symptom
Reference
No normal cranking
Refer to
STR-7, "Work Flow (With GR8-1200 NI)"
or
"Work Flow (Without GR8-1200 NI)"
Starter motor does not rotate
Revision: 2013 February
2012 Murano CrossCabriolet
STARTER MOTOR
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< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
STARTER MOTOR
Exploded View
INFOID:0000000007563576
REMOVAL
DISASSEMBLY
1.
Converter housing
2.
“B” terminal harness
3.
“B” terminal nut
4.
Starter motor mounting bolt
5.
Starter motor
6.
“S” connector
: N·m (kg-m, in-lb)
: N·m (kg-m, ft-lb)
JPBIA1922GB
Revision: 2013 February
2012 Murano CrossCabriolet
STR-16
< REMOVAL AND INSTALLATION >
STARTER MOTOR
Type: M000TA0072
Removal and Installation
INFOID:0000000007563577
REMOVAL
1.
Remove the battery Refer to
PG-108, "Removal and Installation"
.
2.
Remove the air cleaner assembly and air ducts.
3.
Disconnect the following unit connectors:
• ECM
• TCM
• IPDM E/R
4.
Remove the battery tray.
5.
Disconnect the starter motor harness connectors.
6.
Remove the starter motor mounting bolts, using power tools.
7.
Remove the starter motor.
INSTALLATION
Note the following item, and install in the reverse order of removal.
CAUTION:
Be careful to tighten “B” terminal nut to the specified torque.
JPBIA1777GB
1.
Magnetic switch assembly
2.
Dust cover kit
3.
Gear case assembly
4.
Pinion assembly
5.
Stopper
6.
Ring
7.
Ring
8.
Stopper
9.
Yoke assembly
10. Armature assembly
11.
Brush holder assembly
12. Metal
13. Rear cover
14. Gear assembly
15. Shift lever set
16. Clutch gear assembly
17. Center bracket
18. Packing
19. Gear shaft
: N·m (kg-m, in-lb)
Revision: 2013 February
2012 Murano CrossCabriolet
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