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Nissan Murano Z51 (2012 year). Manual - part 19

CHG-16

< DTC/CIRCUIT DIAGNOSIS >

L TERMINAL CIRCUIT (OPEN)

CHECK POWER SUPPLY CIRCUIT

Connect the battery cable to the negative terminal.

Check voltage between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> Replace combination meter.

>> Inspect the power supply circuit. Refer to

PG-21, "Wiring Diagram - IGNITION POWER SUPPLY -

Terminals

Condition

Voltage (Approx.)

(+)

(–)

Combination meter

harness connector

Terminal

M34

Ground

When the ignition switch is in

ON position

Battery voltage

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2012 MURANO

CHG

L TERMINAL CIRCUIT (SHORT)

CHG-17

< DTC/CIRCUIT DIAGNOSIS >

L TERMINAL CIRCUIT (SHORT)

Description

INFOID:0000000007542153

The “L” terminal circuit controls the charge warning lamp. The charge warning lamp illuminates when the igni-
tion switch is set to ON or START. When the alternator is providing sufficient voltage with the engine running,
the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a malfunc-
tion is indicated.

Diagnosis Procedure

INFOID:0000000007542154

CHECK “L” TERMINAL CIRCUIT (SHORT)

Turn ignition switch OFF.

Disconnect alternator connector.

Turn ignition switch ON.

Does charge warning lamp illuminate?

YES

>> GO TO 2.

>> Refer to

CHG-3, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

CHG-7, "Work Flow (Without

EXP-800 NI or GR8-1200 NI)"

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Turn ignition switch OFF.

Disconnect the battery cable from the negative terminal.

Disconnect combination meter connector.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> Replace combination meter.

>> Repair the harness.

Combination meter harness connector

Ground

Continuity

Connector No.

Terminal No.

M34

Not existed

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2012 MURANO

CHG-18

< DTC/CIRCUIT DIAGNOSIS >

S TERMINAL CIRCUIT

S TERMINAL CIRCUIT

Description

INFOID:0000000007542155

The output voltage of the alternator is controlled by the IC voltage regulator at the “S” terminal detecting the
input voltage.
The “S” terminal circuit detects the battery voltage to adjust the alternator output voltage with the IC voltage
regulator.

Diagnosis Procedure

INFOID:0000000007542156

CHECK “S” TERMINAL CONNECTION

Turn ignition switch OFF.

Check if “S” terminal is clean and tight.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair “S” terminal connection. Confirm repair by performing complete Charging system test

using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for
proper testing procedures.

CHECK “S” TERMINAL CIRCUIT

Check voltage between alternator harness connector and ground.

Is the inspection result normal?

YES

>> Refer to

CHG-3, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

CHG-7, "Work Flow (Without

EXP-800 NI or GR8-1200 NI)"

>> Check harness for open between alternator and fuse.

Terminals

Voltage (Approx.)

(+)

(–)

Alternator harness connector

Terminal

F60

Ground

Battery voltage

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CHG

CHARGING SYSTEM

CHG-19

< DTC/CIRCUIT DIAGNOSIS >

CHARGING SYSTEM

Wiring Diagram - CHARGING SYSTEM -

INFOID:0000000007542157

JCMWM3186GB

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2012 MURANO

CHG-20

< SYMPTOM DIAGNOSIS >

CHARGING SYSTEM

SYMPTOM DIAGNOSIS

CHARGING SYSTEM

Symptom Table

INFOID:0000000007542158

Symptom

Reference

Discharged battery

Refer to

CHG-3, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

CHG-7, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"

The charge warning lamp does not illuminate when the ignition
switch is set to ON.

The charge warning lamp does not turn OFF after the engine
starts.

The charging warning lamp turns ON when increasing the engine
speed.

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PRECAUTIONS

CHG-21

< PRECAUTION >

PRECAUTION

PRECAUTIONS

FOR USA AND CANADA

FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER"

INFOID:0000000007795641

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.

FOR USA AND CANADA : Precaution for Power Generation Voltage Variable Control
System

INFOID:0000000007795717

CAUTION:

For this model, the battery current sensor that is installed to the battery cable at the negative terminal
measures the charging/discharging current of the battery, and performs various controls. If the electri-
cal component or the ground wire is connected directly to the battery terminal, the current other than
that being measured with the battery current sensor is charging to or discharging from the battery.
This condition causes the malfunction of the control, and then the battery discharge may occur. Do
not connect the electrical component or the ground wire directly to the battery terminal.

FOR MEXICO

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

INFOID:0000000007805021

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. 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.

Revision: 2013 February

2012 MURANO

CHG-22

< PRECAUTION >

PRECAUTIONS

• 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

• 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.

FOR MEXICO : Precaution for Power Generation Voltage Variable Control System

INFOID:0000000007805020

CAUTION:

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CHG

PREPARATION

CHG-23

< PREPARATION >

PREPARATION

Special Service Tools

INFOID:0000000009347246

Commercial Service Tools

INFOID:0000000007542164

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.

—
(—) Model EXP-800 NI
Battery and electrical diagnostic ana-
lyzer

Tests batteries and charging systems.
For operating instructions, refer to diagnos-
tic analyzer instruction manual.

AWIIA1239ZZ

JSMIA0806ZZ

Tool name

Description

Power tool

Loosening bolts, nuts and screws

PIIB1407E

Revision: 2013 February

2012 MURANO

CHG-24

< PERIODIC MAINTENANCE >

CHARGING SYSTEM PRELIMINARY INSPECTION

PERIODIC MAINTENANCE

CHARGING SYSTEM PRELIMINARY INSPECTION

Inspection Procedure

INFOID:0000000007542165

CHECK BATTERY TERMINALS CONNECTION

Check if battery terminals are clean and tight.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair battery terminals connection.

CHECK FUSE

Check for blown fuse.

Is the inspection result normal?

YES

>> GO TO 3.

>> Be sure to eliminate the cause of malfunction before installing new fuse.

CHECK “E” TERMINAL CONNECTION

Check if “E” terminal (alternator ground harness) is clean and tight.
Is the inspection result normal?

YES

>> GO TO 4.

>> Repair “E” terminal connection.

CHECK DRIVE BELT TENSION

Check drive belt tension. Refer to

EM-17, "Checking"

Is the inspection result normal?

YES

>> INSPECTION END

>> Repair as needed.

Unit

Power source (Power supply terminals)

Fuse No.

Alternator

Battery (“S” terminal)

Combination meter

Ignition switch ON (“L” terminal)

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CHG

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION

INSPECTION

CHG-25

< PERIODIC MAINTENANCE >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPER-
ATION INSPECTION

Inspection Procedure

INFOID:0000000007542166

CAUTION:

When performing this inspection, always use a charged battery that has completed the battery inspec-
tion. (When the charging rate of the battery is low, the response speed of the voltage change will
become slow. This can cause an incorrect inspection.)

CHECK ECM (CONSULT)

Perform ECM self-diagnosis with CONSULT. Refer to

EC-129, "CONSULT Function"

Self-diagnostic results content

No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.

CHECK OPERATION OF POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

Connect CONSULT and start the engine.

The selector lever is in “P” or “N” position and all of the electric loads and A/C, etc. are turned OFF.

Select “ALTERNATOR DUTY” at “Active Test” of “ENGINE”, and then check the value of “BATTERY
VOLT” monitor when DUTY value of “ALTERNATOR DUTY” is set to 40.0 %.

Check the value of “BATTERY VOLT” monitor when DUTY value of “ALTERNATOR DUTY” is set to
80.0%.

Is the measurement value within the specification?

YES

>> INSPECTION END

>> GO TO 3.

CHECK IPDM E/R (CONSULT)

Perform IPDM E/R self-diagnosis with CONSULT. Refer to

PCS-12, "CONSULT Function (IPDM E/R)"

Self-diagnostic results content

No malfunction detected>> GO TO 4.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.

CHECK HARNESS BETWEEN ALTERNATOR AND IPDM E/R

Turn ignition switch OFF.

Disconnect alternator connector and IPDM E/R connector.

Check continuity between alternator harness connector and IPDM E/R harness connector.

Check continuity between alternator harness connector and ground.

“BATTERY VOLT”

2 seconds after setting the
DUTY value of “ALTERNA-
TOR DUTY” to 40.0 %

: 12 - 13.6 V

“BATTERY VOLT”

20 seconds after setting
the DUTY value of “ALTER-
NATOR DUTY” to 80.0 %

: +0.5 V or more against
the value of “BATTERY
VOLT” monitor when
DUTY value is 40.0 %

Alternator harness connector

IPDM E/R harness connector

Continuity

Connector

Terminal

Connector

Terminal

F60

F12

Existed

Revision: 2013 February

2012 MURANO

CHG-26

< PERIODIC MAINTENANCE >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION

INSPECTION

Is the inspection result normal?

YES

>> Replace IPDM E/R.

>> Repair harness or connector between IPDM E/R and alternator.

Alternator harness connector

Ground

Continuity

Connector

Terminal

F60

Not existed

Revision: 2013 February

2012 MURANO

CHG

ALTERNATOR

CHG-27

< REMOVAL AND INSTALLATION >

REMOVAL AND INSTALLATION

ALTERNATOR

Exploded View

INFOID:0000000007542167

REMOVAL

DISASSEMBLY

Alternator mounting bolt (lower)

Alternator bracket

Alternator bracket mounting bolt

Alternator connector

Alternator

Alternator mounting nut (lower)

“B” terminal nut

Alternator mounting bolt (upper)

: Vehicle front

Refer to

GI-4, "Components"

for symbols in the figure.

JMMIA0590GB

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2012 MURANO

CHG-28

< REMOVAL AND INSTALLATION >

ALTERNATOR

Type: A003TJ1791

Removal and Installation

INFOID:0000000007542168

REMOVAL

Disconnect the negative battery terminal.

Remove engine cover.

Remove front wheel and tire (RH).

Remove splash guard (RH) Refer to

EXT-23, "FENDER PROTECTOR : Exploded View"

Remove air cleaner and air duct assembly. Refer to

EM-31, "Removal and Installation"

Remove drive belt. Refer to

EM-17, "Removal and Installation"

Remove A/C compressor. Refer to

HA-36, "COMPRESSOR : Removal and Installation"

Remove idler pulley.

Disconnect the oil pressure switch.

10. Disconnect the alternator harness connectors.

11. Remove the alternator bolt and nuts, using power tools.

12. Slide the alternator out and remove.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

JMMIA0851GB

Rear bearing

Rotor assembly

Retainer

Front bearing

Front bracket assembly

Through bolt

Pulley

Pulley nut

Stator assembly

10. IC voltage regulator assembly

11.

Diode assembly

12. Rear bracket assembly

Refer to

GI-4, "Components"

for symbols in the figure.

Revision: 2013 February

2012 MURANO

CHG

ALTERNATOR

CHG-29

< REMOVAL AND INSTALLATION >

• Temporarily tighten all of alternator bolt and nuts. And then

tighten them in numerical order shown in the figure.

• Be sure to tighten “B” terminal nut carefully.
• Install alternator and check tension of belt. Refer to

EM-30, "Exploded View"

• For this model, the power generation voltage variable control system that controls the power gener-

ation voltage of the alternator has been adopted. Therefore, the power generation voltage variable
control system operation inspection should be performed after replacing the alternator, and then
make sure that the system operates normally. Refer to

CHG-25, "Inspection Procedure"

Inspection

INFOID:0000000007542169

ALTERNATOR PULLEY INSPECTION

Perform the following.
• Make sure that alternator pulley does not rattle.
• Make sure that alternator pulley nut is tight.

JPMIA0831ZZ

Revision: 2013 February

2012 MURANO