Nissan Murano Z51 (2012 year). Manual — part 18
CCS-2
< SYSTEM DESCRIPTION >
[ASCD]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
SYSTEM DESCRIPTION
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Information
INFOID:0000000007544991
Automatic Speed Control Device (ASCD) system is controlled by ECM.
Regarding the information for ASCD system, refer to
.
Revision: 2013 February
2012 MURANO
CHG
CHG-1
ELECTRICAL & POWER CONTROL
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SECTION
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CONTENTS
CHARGING SYSTEM
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORK FLOW . . .
Work Flow (With EXP-800 NI or GR8-1200 NI) . ....
Work Flow (Without EXP-800 NI or GR8-1200 NI)
. ..
SYSTEM DESCRIPTION . . . . . . . .
CHARGING SYSTEM . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ..
POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
Component Description . . . . . . . . . . ...
DTC/CIRCUIT DIAGNOSIS . . . . . . .
B TERMINAL CIRCUIT . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
L TERMINAL CIRCUIT (OPEN) . . . . . . .
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
L TERMINAL CIRCUIT (SHORT) . . . . . ...
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
S TERMINAL CIRCUIT . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
CHARGING SYSTEM . . . . . . . . . . .
Wiring Diagram - CHARGING SYSTEM - . . . ...
SYMPTOM DIAGNOSIS . . . . . . . ..
CHARGING SYSTEM . . . . . . . . . ...
Symptom Table . . . . . . . . . . . . . ...
PRECAUTION . . . . . . . . . . . ..
PRECAUTIONS . . . . . . . . . . . . .
FOR USA AND CANADA . . . . . . . . . . ..
FOR USA AND CANADA : Precaution for Power
Generation Voltage Variable Control System . . ..
FOR MEXICO . . . . . . . . . . . . . . . .
FOR MEXICO : Precaution for Power Generation
Voltage Variable Control System . . . . . . . .
PREPARATION . . . . . . . . . . ...
PREPARATION . . . . . . . . . . . . .
Special Service Tools . . . . . . . . . . . ..
Commercial Service Tools . . . . . . . . . ...
PERIODIC MAINTENANCE . . . . . .
CHARGING SYSTEM PRELIMINARY IN-
SPECTION . . . . . . . . . . . . . .
Inspection Procedure . . . . . . . . . . . ...
Inspection Procedure . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ...
ALTERNATOR . . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Revision: 2013 February
2012 MURANO
CHG-2
Inspection . . . . . . . . . . . . . . . ...
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ...
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Alternator . . . . . . . . . . . . . . . .
Revision: 2013 February
2012 MURANO
CHG
DIAGNOSIS AND REPAIR WORK FLOW
CHG-3
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow (With EXP-800 NI or GR8-1200 NI)
INFOID:0000000009347244
CHARGING SYSTEM DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
To test the charging system, use the following special service tools:
• EXP-800 NI Battery and electrical diagnostic analyzer
• GR8-1200 NI Multitasking battery and electrical diagnostic station
NOTE:
Refer to the applicable Instruction Manual for proper charging system diagnosis procedures.
Revision: 2013 February
2012 MURANO
CHG-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
OVERALL SEQUENCE
DETAILED FLOW
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be done
as a set from start to finish.
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
CHG-24, "Inspection Procedure"
.
JMMIA1147GB
Revision: 2013 February
2012 MURANO
CHG
DIAGNOSIS AND REPAIR WORK FLOW
CHG-5
< BASIC INSPECTION >
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>> GO TO 2.
2.
STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variable control in either of the following procedures.
• After selecting “ENGINE” of “SELECT SYSTEM” using CONSULT, set the DUTY value of “ALTERNATOR
DUTY” to 0 % by selecting “ALTERNATOR DUTY” of “Active Test”. Continue “Active Test” until the end of
inspection. (When the DUTY value is 0 or 100 %, the normal power generation is performed according to the
characteristic of the IC voltage regulator of the alternator.)
• Turn the ignition switch OFF, and disconnect the battery current sensor connector. [However, DTC (P1550 -
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self-diagnosis results history of the engine using CONSULT.]
>> GO TO 3.
3.
DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
Perform the charging system test using Multitasking battery and electrical diagnostic station GR8-1200 NI or
Battery and electrical diagnostic analyzer EXP-800 NI. Refer to the applicable Instruction Manual for proper
testing procedures.
Test result
NO PROBLEMS>>Charging system is normal and will also show “DIODE RIPPLE” test result.
NO VOLTAGE>>GO TO 4.
LOW VOLTAGE>>GO TO 12.
HIGH VOLTAGE>>GO TO 14.
EXCESSIVE RIPPLE, OPEN PHASE, OPEN DIODE or SHORTED DIODE>>Replace the alternator. Per-
form “DIODE RIPPLE” test again using Multitasking battery and electrical diagnostic station GR8-
1200 NI or Battery and electrical diagnostic analyzer EXP-800 NI to confirm repair.
4.
INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
“L” TERMINAL CIRCUIT (OPEN) INSPECTION
Check “L” terminal circuit (open). Refer to
Is the “L” terminal circuit normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
6.
INSPECTION WITH CHARGE WARNING LAMP (IDLING)
Start the engine and run it at idle.
Does the charge warning lamp turn OFF?
YES
>> GO TO 9.
NO
>> GO TO 7.
7.
“L” TERMINAL CIRCUIT (SHORT) INSPECTION
Check “L” terminal circuit (short). Refer to
Is the “L” terminal circuit normal?
YES
>> GO TO 8.
NO
>> Repair as needed.
8.
“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to
Is the “S” terminal circuit normal?
YES
>> GO TO 10.
NO
>> Repair as needed.
Revision: 2013 February
2012 MURANO
CHG-6
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
9.
INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 3,000 RPM)
Increase and maintain the engine speed at 3,000 rpm.
Does the charge warning lamp remain off?
YES
>> GO TO 11.
NO
>> GO TO 10.
10.
INSPECTION OF ALTERNATOR PULLEY
Check alternator pulley. Refer to
Is alternator pulley normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
11.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
Is “B” terminal circuit normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
12.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
Is “B” terminal circuit normal?
YES
>> GO TO 13.
NO
>> Repair as needed.
13.
INSPECTION OF ALTERNATOR PULLEY
Check alternator pulley. Refer to
Is alternator pulley normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
14.
“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to
Is the “S” terminal circuit normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
Revision: 2013 February
2012 MURANO
CHG
DIAGNOSIS AND REPAIR WORK FLOW
CHG-7
< BASIC INSPECTION >
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Work Flow (Without EXP-800 NI or GR8-1200 NI)
INFOID:0000000009347245
OVERALL SEQUENCE
DETAILED FLOW
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
CHG-24, "Inspection Procedure"
.
JMMIA1148GB
Revision: 2013 February
2012 MURANO
CHG-8
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
>> GO TO 2.
2.
STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variable control in either of the following procedures.
• After selecting “ENGINE” of “SELECT SYSTEM” using CONSULT, set the DUTY value of “ALTERNATOR
DUTY” to 0 % by selecting “ALTERNATOR DUTY” of “Active Test”. Continue “Active Test” until the end of
inspection. (When the DUTY value is 0 or 100 %, the normal power generation is performed according to the
characteristic of the IC regulator of the alternator.)
• Turn the ignition switch OFF, and disconnect the battery current sensor connector. [However, DTC (P1550 -
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self-diagnostic results history of the engine using CONSULT.]
>> GO TO 3.
3.
INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS TURNED ON)
When ignition switch is turned ON
Does the charge warning lamp illuminate?
YES
>> GO TO 4.
NO
>> GO TO 10.
4.
INSPECTION WITH CHARGE WARNING LAMP (IDLING)
Start the engine and run it at idle.
Does the charge warning lamp turn OFF?
YES
>> GO TO 5.
NO
>> GO TO 6.
5.
INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 2,500 RPM)
Increase and maintain the engine speed at 2,500 rpm.
Does the charge warning lamp illuminate?
YES
>> GO TO 8.
NO
>> INSPECTION END
6.
“L” TERMINAL CIRCUIT (SHORT) INSPECTION
Check “L” terminal circuit (short). Refer to
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair as needed.
7.
“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair as needed.
8.
MEASURE “B” TERMINAL VOLTAGE
Start engine. With engine running at 2,500 rpm, measure “B” terminal voltage.
What voltage does the measurement result show?
Less than 13.0 V>>GO TO 9.
More than 16.0 V>>Replace alternator. Refer to
CHG-28, "Removal and Installation"
.
9.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
Is the inspection result normal?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
10.
INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
Revision: 2013 February
2012 MURANO
CHG
DIAGNOSIS AND REPAIR WORK FLOW
CHG-9
< BASIC INSPECTION >
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1.
Disconnect alternator connector and apply ground to “L” terminal.
2.
Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES
>> Replace alternator. Refer to
CHG-28, "Removal and Installation"
NO
>> GO TO 11.
11.
CHECK “L” TERMINAL CIRCUIT (OPEN)
Check “L” terminal circuit (open). Refer to
>> Repair as needed.
Revision: 2013 February
2012 MURANO
CHG-10
< SYSTEM DESCRIPTION >
CHARGING SYSTEM
SYSTEM DESCRIPTION
CHARGING SYSTEM
System Diagram
INFOID:0000000007542141
System Description
INFOID:0000000007542142
The voltage output is controlled by the IC voltage regulator.
Component Parts Location
INFOID:0000000007542143
Component Description
INFOID:0000000007542144
JPMIA0426GB
1.
Alternator
2.
Charge warning lamp
A.
Cylinder block left side
B.
Combination meter
JPLIA0887ZZ
Revision: 2013 February
2012 MURANO
CHG
CHARGING SYSTEM
CHG-11
< SYSTEM DESCRIPTION >
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Component part
Description
Alternator
The alternator provides DC voltage to operate the vehicle's electri-
cal system and to keep the battery charged.
Combination meter (Charge warning lamp)
The IC voltage regulator warning function activates to illuminate
the charge warning lamp, if any of the following symptoms occur
while alternator is operating:
• Excessive voltage is produced.
• No voltage is produced.
Revision: 2013 February
2012 MURANO
CHG-12
< SYSTEM DESCRIPTION >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
System Diagram
INFOID:0000000007542145
System Description
INFOID:0000000007542146
By performing the power generation voltage variable control, the engine load due to the power generation of
the alternator is reduced and fuel consumption is decreased.
NOTE:
When any malfunction is detected in the power generation voltage variable control system, the power genera-
tion is performed according to the characteristic of the IC voltage regulator of the alternator.
Component Parts Location
INFOID:0000000007542147
JMMIA1072GB
1.
ECM
2.
IPDM E/R
3.
Battery current sensor
4.
Alternator
A.
Engine room dash panel (LH)
B.
Battery
C.
Cylinder block left side
JPLIA0888ZZ
Revision: 2013 February
2012 MURANO
CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
CHG-13
< SYSTEM DESCRIPTION >
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Component Description
INFOID:0000000007542148
Component part
Description
Battery current sensor
Battery current sensor is installed to the battery cable at the neg-
ative terminal, and it detects the charging/discharging current of
the battery and sends the voltage signal to ECM according to the
current value.
ECM
Battery current sensor detects the charging/discharging current of
the battery. ECM judges the battery condition based on this signal.
ECM judges whether to perform the power generation voltage
variable control according to the battery condition.
When performing the power generation voltage variable control,
ECM calculates the target power generation voltage according to
the battery condition and sends the calculated value as the power
generation command value to IPDM E/R.
IPDM E/R
IPDM E/R converts the received power generation command val-
ue into the power generation command signal (PWM signal) and
sends it to the IC voltage regulator.
Alternator (IC voltage regulator)
IC voltage regulator controls the power generation voltage by the
target power generation voltage based on the received power gen-
eration command signal.
When there is no power generation command signal, the alterna-
tor performs the normal power generation according to the char-
acteristic of the IC voltage regulator.
Revision: 2013 February
2012 MURANO
CHG-14
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
DTC/CIRCUIT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000007542149
“B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system.
Diagnosis Procedure
INFOID:0000000007542150
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 Charging system test
using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for
proper testing procedures.
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
CHG-3, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
or
CHG-7, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
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: 2013 February
2012 MURANO
CHG
L TERMINAL CIRCUIT (OPEN)
CHG-15
< DTC/CIRCUIT DIAGNOSIS >
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L TERMINAL CIRCUIT (OPEN)
Description
INFOID:0000000007542151
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:0000000007542152
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 Charging system test
using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for
proper testing procedures.
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
CHG-3, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
or
CHG-7, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
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.
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: 2013 February
2012 MURANO
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