Nissan Murano Z51 (2008 year). Manual — part 84
CHG
B TERMINAL CIRCUIT
CHG-9
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000003412942
“B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system.
Diagnosis Procedure
INFOID:0000000003412943
1.
CHECK “B” TERMINAL CONNECTION
1.
Turn ignition switch OFF.
2.
Check if “B” terminal is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair “B” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2.
CHECK “B” TERMINAL CIRCUIT
Check voltage between alternator “B” terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness for open between alternator and fusible link.
3.
CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1.
Start engine, then engine running at idle and warm.
2.
Check voltage between battery positive terminal and alternator “B” terminal.
Is the inspection result normal?
YES
>> “B” terminal circuit is normal. Refer to
.
NO
>> Check harness between battery and alternator for poor continuity.
Terminals
Voltage (Approx.)
(+)
(–)
Alternator “B” terminal
Terminal
F59
1
Ground
Battery voltage
Terminals
Voltage (Approx.)
(+)
(–)
Alternator “B” terminal
Terminal
Battery positive terminal
F59
1
Less than 0.2 V
Revision: 2008 October
2009 Murano
CHG-10
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT (OPEN)
L TERMINAL CIRCUIT (OPEN)
Description
INFOID:0000000003412944
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:0000000003412945
1.
CHECK “L” TERMINAL CONNECTION
1.
Turn ignition switch OFF.
2.
Check if “L” terminal is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair “L” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2.
CHECK “L” TERMINAL CIRCUIT (OPEN)
1.
Disconnect alternator connector.
2.
Apply ground to alternator harness connector terminal.
3.
Check condition of the charge warning lamp with the ignition switch in the ON position.
Does it illuminate?
YES
>> “L” terminal circuit is normal. Refer to
NO
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the battery cable from the negative terminal.
2.
Disconnect the combination meter connector.
3.
Check continuity between alternator harness connector and combination meter harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair the harness or connector.
4.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check continuity between combination meter harness connector and fuse block.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair the harness.
5.
CHECK POWER SUPPLY CIRCUIT
1.
Connect the battery cable to the negative terminal.
Alternator harness connector
Terminal
Ground
Condition
Ignition switch position
Charge warning lamp
F60
3
ON
illuminate
Alternator harness connector
Combination meter harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F60
3
M34
25
Existed
Combination meter harness connector
Fuse block
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M34
2
M3
12C
Existed
Revision: 2008 October
2009 Murano
CHG
L TERMINAL CIRCUIT (OPEN)
CHG-11
< COMPONENT DIAGNOSIS >
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2.
Check voltage between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Inspect the power supply circuit. Refer to
PG-59, "Wiring Diagram - IGNITION POWER SUPPLY -
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Combination meter
harness connector
Terminal
M34
2
Ground
When the ignition switch is in
ON position
Battery voltage
Revision: 2008 October
2009 Murano
CHG-12
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT (SHORT)
L TERMINAL CIRCUIT (SHORT)
Description
INFOID:0000000003412946
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:0000000003412947
1.
CHECK “L” TERMINAL CIRCUIT (SHORT)
1.
Turn ignition switch OFF.
2.
Disconnect alternator connector.
3.
Turn ignition switch ON.
Does charge warning lamp illuminate?
YES
>> GO TO 2.
NO
>> Refer to
.
2.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect combination meter connector.
4.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Repair the harness.
Combination meter harness connector
Ground
Continuity
Connector No.
Terminal No.
M34
25
Not existed
Revision: 2008 October
2009 Murano
CHG
S TERMINAL CIRCUIT
CHG-13
< COMPONENT DIAGNOSIS >
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S TERMINAL CIRCUIT
Description
INFOID:0000000003412948
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:0000000003412949
1.
CHECK “S” TERMINAL CONNECTION
1.
Turn ignition switch OFF.
2.
Check if “S” terminal is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair “S” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2.
CHECK “S” TERMINAL CIRCUIT
Check voltage between alternator harness connector and ground.
Is the inspection result normal?
YES
>> Refer to
.
NO
>> Check harness for open between alternator and fuse.
Terminals
Voltage (Approx.)
(+)
(–)
Alternator harness connector
Terminal
F60
4
Ground
Battery voltage
Revision: 2008 October
2009 Murano
CHG-14
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
CHARGING SYSTEM
Wiring Diagram - CHARGING SYSTEM -
INFOID:0000000003412950
JCMWM3186GB
Revision: 2008 October
2009 Murano
CHG
CHARGING SYSTEM
CHG-15
< COMPONENT DIAGNOSIS >
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JCMWM3187GB
Revision: 2008 October
2009 Murano
CHG-16
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
JCMWM3188GB
Revision: 2008 October
2009 Murano
CHG
CHARGING SYSTEM
CHG-17
< COMPONENT DIAGNOSIS >
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JCMWM3189GB
Revision: 2008 October
2009 Murano
CHG-18
< SYMPTOM DIAGNOSIS >
CHARGING SYSTEM
SYMPTOM DIAGNOSIS
CHARGING SYSTEM
Symptom Table
INFOID:0000000003412951
Symptom
Reference
Discharged battery
Refer to
.
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.
Revision: 2008 October
2009 Murano
CHG
PRECAUTIONS
CHG-19
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003412952
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 AIRBAG” and “SEAT BELT” of this
Service Manual.
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 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 the “SRS AIRBAG”.
• 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 har-
ness connectors.
Precaution for Power Generation Voltage Variable Control System
INFOID:0000000003412954
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.
Revision: 2008 October
2009 Murano
CHG-20
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tools
INFOID:0000000003412955
Commercial Service Tools
INFOID:0000000003412956
Tool number
(Kent-Moore No.)
Tool name
Description
—
(J-44373 Model MCR620)
Starting/Charging System Tester
Tests starting and charging systems.
For operating instructions, refer to Technical
Service Bulletin.
SEL403X
Tool name
Description
Power tool
Loosening bolts, nuts and screws
PIIB1407E
Revision: 2008 October
2009 Murano
CHG
CHARGING SYSTEM PRELIMINARY INSPECTION
CHG-21
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
CHARGING SYSTEM PRELIMINARY INSPECTION
Inspection Procedure
INFOID:0000000003412957
1.
CHECK BATTERY TERMINALS CONNECTION
Check if battery terminals are clean and tight.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair battery terminals connection.
2.
CHECK FUSE
Check for blown fuse.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Be sure to eliminate the cause of malfunction before installing new fuse.
3.
CHECK “E” TERMINAL CONNECTION
Check if “E” terminal (alternator ground harness) is clean and tight.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair “E” terminal connection.
4.
CHECK DRIVE BELT TENSION
Check drive belt tension. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair as needed.
Unit
Power source (Power supply terminals)
Fuse No.
Alternator
Battery (“S” terminal)
38
Combination meter
Ignition switch ON (“L” terminal)
4
Revision: 2008 October
2009 Murano
CHG-22
< ON-VEHICLE MAINTENANCE >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION
INSPECTION
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPER-
ATION INSPECTION
Inspection Procedure
INFOID:0000000003412958
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.)
1.
CHECK ECM (CONSULT-III)
Perform ECM self-diagnosis with CONSULT-III. Refer to
EC-115, "CONSULT-III Function"
.
Self-diagnostic results content
No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
2.
CHECK OPERATION OF POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
1.
Connect CONSULT-III and start the engine.
2.
The selector lever is in “P” or “N” position and all of the electric loads and A/C, etc. are turned OFF.
3.
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 %.
4.
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
NO
>> GO TO 3.
3.
CHECK IPDM E/R (CONSULT-III)
Perform IPDM E/R self-diagnosis with CONSULT-III. Refer to
PCS-12, "CONSULT-III 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.
4.
CHECK HARNESS BETWEEN ALTERNATOR AND IPDM E/R
1.
Turn ignition switch OFF.
2.
Disconnect alternator connector and IPDM E/R connector.
3.
Check continuity between alternator harness connector and IPDM E/R harness connector.
4.
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
5
F12
76
Existed
Revision: 2008 October
2009 Murano
CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION
INSPECTION
CHG-23
< ON-VEHICLE MAINTENANCE >
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Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair harness or connector between IPDM E/R and alternator.
Alternator harness connector
Ground
Continuity
Connector
Terminal
F60
5
Not existed
Revision: 2008 October
2009 Murano
CHG-24
< ON-VEHICLE REPAIR >
ALTERNATOR
ON-VEHICLE REPAIR
ALTERNATOR
Exploded View
INFOID:0000000003441418
REMOVAL
DISASSEMBLY
Type: A003TJ1791
1.
Alternator mounting bolt
2.
Alternator stay mounting bolt
3.
Alternator
4.
Alternator mounting nut
5.
“B” terminal nut
6.
Alternator stay mounting bolt
7.
Alternator bracket
Refer to
for symbols in the figure.
JPMIA0830ZZ
Revision: 2008 October
2009 Murano
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