2014 NISSAN TEANA engine

CHG-10
< SYSTEM DESCRIPTION >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
System DiagramINFOID:0000000009460653
System DescriptionINFOID:0000000009460654
Power generation variable voltage control system has been adopted. By varying the voltage to the generator,
engine load due to power generation of the generator is reduced and fuel consumption is decreased.
NOTE:
When any malfunction is detected in the power generat ion variable voltage control system, power generation
is performed according to the characteristic of the IC regulator in the generator.
Component DescriptionINFOID:0000000009460655
ALMIA0566GB
Component part Description
Generator (IC regulator) The IC regulator controls the power generation voltage by the tar-
get power generation voltage based on the received PWM com-
mand signal.
When there is no PWM command signal, the generator performs
the normal power generation according to the characteristic of the
IC regulator.
ECM The battery current sensor detects the charging/discharging cur-
rent of the battery. The ECM judges the battery condition based on
this signal.
The ECM judges whether to request more output via the power
generation voltage variable control according to the battery condi-
tion.
When performing the power generation voltage variable control,
the ECM calculates the target power generation voltage according
to the battery condition and sends the calculated value as the pow-
er generation command value to the IPDM E/R.
IPDM E/R The IPDM E/R converts the received power generation command
value into a pulse width modulated (PWM) command signal and
sends it to the IC regulator.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

CHG
DIAGNOSIS AND REPAIR WORKFLOWCHG-19
< BASIC INSPECTION >
C
D E
F
G H
I
J
K L
B
A
O P
N
>> GO TO 2.
2.STOP POWER GENERATION VOLT
AGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variabl e control in either of the following procedures.
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select- ing “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 generator.)
• Turn the ignition switch OFF, and disconnect the batte ry 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. Re fer 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 generator. Refer
to CHG-32, "Removal and Installation"
. Perform “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 CHG-27, "Diagnosis Procedure"
.
Is the
“L” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "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 CHG-29, "Diagnosis Procedure"
.
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 CHG-30, "Diagnosis Procedure"
.
Is the
“S” terminal circuit normal?
YES >> GO TO 10.
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CHG-20
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
NO >> Repair as needed.
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 GENERATOR PULLEY
Check generator pulley. Refer to CHG-32, "Removal and Installation"
.
Is generator pulley normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
11 .“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is
“B” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
12.“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is
“B” terminal circuit normal?
YES >> GO TO 13.
NO >> Repair as needed.
13.INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to CHG-32, "Removal and Installation"
.
Is generator pulley normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
14.“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to CHG-30, "Diagnosis Procedure"
.
Is the
“S” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
Work Flow (Without EXP- 800 NI or GR8-1200 NI)INFOID:0000000009460658
OVERALL SEQUENCE
Before performing a generator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-
able test probes are necessary for the test.
• Before starting, inspect the fusible link.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

CHG
DIAGNOSIS AND REPAIR WORKFLOWCHG-21
< BASIC INSPECTION >
C
D E
F
G H
I
J
K L
B
A
O P
N
• Use fully charged battery.
DETAILED FLOW
1.PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to CHG-23, "Diagnosis Procedure"
.
>> GO TO 2.
2.STOP POWER GENERATION VOLT AGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variabl e control in either of the following procedures:
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select- ing “ALTERNATOR DUTY” with “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 generator.)
• Turn the ignition switch OFF, and disconnect the batte ry 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 LA MP (IGNITION SWITCH IS TURNED ON)
When ignition switch is turned ON.
Does the charge warning lamp illuminate?
ALMIA0577GB
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CHG-22
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
YES >> GO TO 4.
NO >> GO TO 10.
4.INSPECTION WITH CHARGE WA RNING 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 terminal “L” circuit for (short). Refer to CHG-29, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair as needed.
7.“S” TERMINAL CIRCUIT INSPECTION
Check terminal “S” circuit. Refer to CHG-30, "Diagnosis Procedure"
.
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 generator. Refer to CHG-32, "Removal and Installation"
.
9.“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
10.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
1. Disconnect generator connector and apply ground to “L” terminal.
2. Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> GO TO 11.
11 .CHECK “L” TERMINAL CIRCUIT (OPEN)
Check “L” terminal circuit (OPEN). Refer to CHG-27, "Diagnosis Procedure"
.
>> Repair as needed.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

CHG-24
< DTC/CIRCUIT DIAGNOSIS >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION
INSPECTION
POWER GENERATION VOLTAGE VA RIABLE CONTROL SYSTEM OPER-
ATION INSPECTION
Diagnosis ProcedureINFOID:0000000009460660
Regarding Wiring Diagram information. Refer to CHG-12, "Wiring Diagram".
CAUTION:
When performing this in spection, always use a charged battery that has completed the battery inspec-
tion. (When the charging rate of the battery is lo w, the response speed of the voltage change will
become slow. This can cause an incorrect inspection.)
1.CHECK ECM (CONSULT)
Perform ECM self-diagnosis with CONSULT. Refer to EC-77, "CONSULT Function"
(QR25DE) or EC-601,
"CONSULT Function" (VQ35DE).
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 and start the engine.
2. The selector lever is in “P” or “N” position and al l of the electric loads and A/C, etc. are turned OFF.
3. Select “ALTERNATOR DUTY” in “Active Test” of “ENGINE”, and then check the value of “BATTERY
VOLT” monitor when DUTY value of “DUTY” is set to 40.0 %.
4. Check the value of “BATTERY VOLT” monitor when DUTY value of “DUTY” is set to 80.0%.
Is the inspection result normal?
YES >> Inspection End.
NO >> GO TO 3.
3.CHECK IPDM E/R (CONSULT)
Perform IPDM E/R self-diagnosis with CONSULT. Refer to PCS-9, "CONSULT Function (IPDM E/R)"
.
Is the inspection result normal?
No malfunction detected>> GO TO 4.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
4.CHECK HARNESS BETWEEN GE NERATOR AND IPDM E/R
1. Turn ignition switch OFF.
2. Disconnect generator connector and IPDM E/R connector.
3. Check continuity between generator harnes s connector and IPDM E/R harness connector.
“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 %
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

CHG-26
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
B TERMINAL CIRCUIT
DescriptionINFOID:0000000009460661
“B” terminal circuit supplies power to charge the battery and to operate the vehicles electrical system.
Diagnosis ProcedureINFOID:0000000009460662
Regarding Wiring Diagram information. Refer to CHG-12, "Wiring Diagram".
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 terminal “B” connection. Confirm repa ir by performing complete Charging system test
using the EXP-800 NI or GR8-1200 NI (if availabl e). Refer to applicable Instruction Manual for
proper testing procedures.
2.CHECK “B” TERMINAL CIRCUIT
Check voltage between generator “B” terminal and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check harness for open between generator and fusible link.
3.CHECK “B” TERMINAL CONNECT ION (VOLTAGE DROP TEST)
1. Start engine, then engine running at idle and warm.
2. Check voltage between battery positive te rminal and generator connector “B” terminal.
Is the inspection result normal?
YES >> “B” terminal circuit is normal. Refer to CHG-17, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
or CHG-20, "Work Flow (Without EXP-800 NI or GR8-1200 NI)".
NO >> Check harness between battery and generator for continuity.
(+)
(-)Voltage
(Approx.)
Generator
Connector Terminal F6 1 Ground Battery voltage
(+) (-)Voltage
(Approx.)
Generator
Connector Terminal F6 1 Battery positive terminal Less than 0.2V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

CHG
L TERMINAL CIRCUIT (OPEN)CHG-27
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
K L
B
A
O P
N
L TERMINAL CIRCUIT (OPEN)
DescriptionINFOID:0000000009460663
The “L” terminal circuit controls the charge warning
lamp. The charge warning lamp turns ON when the igni-
tion switch is set to ON or START. When the generator is providing sufficient voltage with the engine running,
the charge warning lamp turns OFF. If the charge warn ing lamp illuminates with the engine running, a malfunc-
tion is indicated.
Diagnosis ProcedureINFOID:0000000009460664
Regarding Wiring Diagram information. Refer to CHG-12, "Wiring Diagram".
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 applicable Instruction Manual for proper
testing procedures.
2.CHECK “L” TERMINAL CIRCUIT (OPEN)
1. Disconnect the generator connector.
2. Apply ground to generator 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-17, "Work Flow (With EXP-800 NI or GR8-1200 NI)" or
CHG-20, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
NO >> GO TO 3.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the battery cabl e from the negative terminal.
2. Disconnect the combination meter connector.
3. Check continuity between generator harness connector and combination meter harness connector.
is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the harness or connectors.
4.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
Check continuity between combination me ter harness connector and fuse block (J/B).
Generator
GroundCondition
Connector Terminal Ignition switch position Charge warning lamp F7 2 ON Illuminate
Generator Combination meter Continuity
Connector Terminal Connector Terminal
F7 2 M24 11 Yes
Combination meter Fuse box (J/B) Continuity
Connector Terminal Connector Terminal
M24 21 M5 8P Yes
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