alternator NISSAN TEANA 2008 Service Manual

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ELECTRICAL & POWER CONTROL
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SECTION CHG
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CONTENTS
CHARGING SYSTEM
BASIC INSPECTION .......
.............................2
DIAGNOSIS AND REPAIR WORKFLOW ..... .....2
Work Flow ........................................................... ......2
FUNCTION DIAGNOSIS ...............................5
CHARGING SYSTEM ..................................... .....5
System Diagram .................................................. ......5
System Description ...................................................5
Component Parts Location ........................................5
Component Description ............................................5
POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM ............................ .....
7
System Diagram .................................................. ......7
System Description ...................................................7
Component Parts Location ........................................7
Component Description .............................................8
COMPONENT DIAGNOSIS ..........................9
B TERMINAL CIRCUIT .................................. .....9
Description .......................................................... ......9
Diagnosis Procedure .................................................9
L TERMINAL CIRCUIT (OPEN) .........................10
Description .......................................................... ....10
Diagnosis Procedure ...............................................10
L TERMINAL CIRCUIT (SHORT) .......................12
Description .......................................................... ....12
Diagnosis Procedure ...............................................12
S TERMINAL CIRCUIT ......................................13
Description .......................................................... ....13
Diagnosis Procedure ...............................................13
CHARGING SYSTEM ..................................... ....14
Wiring Diagram - CHARGING SYSTEM - ........... ....14
SYMPTOM DIAGNOSIS ..............................17
CHARGING SYSTEM .......................................17
Symptom Table ................................................... ....17
PRECAUTION ..............................................18
PRECAUTIONS .................................................18
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
18
PREPARATION ...........................................19
PREPARATION .................................................19
Special Service Tools .......................................... ....19
ON-VEHICLE MAINTENANCE ....................20
CHARGING SYSTEM PRELIMINARY IN-
SPECTION ....... ................................ .................
20
Inspection Procedure ........................................... ....20
ON-VEHICLE REPAIR .................................21
ALTERNATOR . ................................ .................21
Exploded View ..................................................... ....21
Removal and Installation .........................................22
Disassembly and Assembly .....................................23
Inspection ................................................................24
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
25
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
25
Alternator ............................................................. ....25

CHG
DIAGNOSIS AND REPAIR WORKFLOW
CHG-3
< BASIC INSPECTION >
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1.PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to CHG-20, "
Inspection Procedure".
>> 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-III, 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-III.]
>> GO TO 3.
3.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES >> GO TO 4.
NO >> GO TO 11.
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 CHG-12, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair as needed.
7.“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to CHG-13, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair as needed.
8.MEASURE “B” TERMINAL VOLTAGE
Engine start. When keeping 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 IC regulator.
9.“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-9, "
Diagnosis Procedure".
Is the inspection result normal?

CHG-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
YES >> GO TO 10.
NO >> Repair as needed.
10.DISASSEMBLE AND CHECK ALTERNATOR
Check the following conditions. Refer to CHG-24, "
Inspection".
 Rotor coil
 Rotor slip ring
Brush
Stator coil
Are these normal?
YES >> Replace IC regulator and/or diode assembly.
NO >> Repair as needed.
11 .INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
1. Disconnect alternator connector and ground “L” harness side.
2. Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES >> GO TO 12.
NO >> GO TO 13.
12.DISASSEMBLE AND CHECK ALTERNATOR
Check the following conditions. Refer to CHG-24, "
Inspection".
 Rotor coil
 Rotor slip ring
Brush
Are these normal?
YES >> Replace IC regulator.
NO >> Repair as needed.
13.CHECK “L” TERMINAL CIRCUIT (OPEN)
Check “L” terminal circuit (open). Refer to CHG-10, "
Diagnosis Procedure".
>> Repair as needed.

CHG
CHARGING SYSTEM
CHG-5
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
CHARGING SYSTEM
System DiagramINFOID:0000000003860509
System DescriptionINFOID:0000000003860510
The voltage output is controlled by the IC voltage regulator.
Component Parts LocationINFOID:0000000003860511
Component DescriptionINFOID:0000000003860512
JPMIA0426GB
1. Alternator 2. Charge warning lamp
A. Cylinder block bank2 side B. Combination meter
JPLIA0887ZZ

CHG-6
< FUNCTION DIAGNOSIS >
CHARGING SYSTEM
Component part Description
AlternatorThe 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.

CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
CHG-7
< FUNCTION DIAGNOSIS >
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POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
System DiagramINFOID:0000000003860517
System DescriptionINFOID:0000000003860518
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 LocationINFOID:0000000003860519
JPMIA0632GB
1. ECM 2. IPDM E/R 3. Battery current sensor
4. Alternator
A. Engine room dash panel (LH) B. Battery C. Cylinder block bank2 side
JPLIA0888ZZ

CHG-8
< FUNCTION DIAGNOSIS >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Component Description
INFOID:0000000003860520
Component part Description
Battery current sensorBattery 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.
ECMBattery 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/RIPDM 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.

CHG
B TERMINAL CIRCUIT
CHG-9
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
B TERMINAL CIRCUIT
DescriptionINFOID:0000000003860521
“B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system.
Diagnosis ProcedureINFOID:0000000003860522
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 CHG-2, "Work Flow".
NO >> Check harness between battery and alternator for poor continuity.
Te r m i n a l s
Voltage (Approx.) (+)
(–)
Alternator “B” terminal Terminal
F59 1 Ground Battery voltage
Te r m i n a l s
Voltage (Approx.)
(+)(–)
Alternator “B” terminal Terminal
Battery positive terminal F59 1 Less than 0.2 V

CHG-10
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT (OPEN)
L TERMINAL CIRCUIT (OPEN)
DescriptionINFOID:0000000003860523
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 ProcedureINFOID:0000000003860524
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 CHG-2, "Work Flow".
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
GroundCondition
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

CHG-12
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT (SHORT)
L TERMINAL CIRCUIT (SHORT)
DescriptionINFOID:0000000003860525
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 ProcedureINFOID:0000000003860526
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 CHG-2, "
Work Flow".
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
GroundContinuity
Connector No. Terminal No.
M34 25 Not existed