Nissan Pathfinder (2010 year). Instruction — part 123
CHG-6
< FUNCTION DIAGNOSIS >
CHARGING SYSTEM
FUNCTION DIAGNOSIS
CHARGING SYSTEM
System Diagram
INFOID:0000000005255205
System Description
INFOID:0000000005255206
The generator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Component Description
INFOID:0000000005255207
ALMIA0207GB
Component part
Description
Generator
Terminal “1”
Refer to
Terminal “2”
Refer to
Terminal “3”
Refer to
Terminal “4”
Used for the power generation voltage variable control system.
Refer to
.
Combination meter (Charge warning lamp)
The IC regulator warning function activates to illuminate the
charge warning lamp if any of the following symptoms occur while
generator is operating:
• Excessive voltage is produced.
• No voltage is produced.
IPDM E/R
Used for the power generation voltage variable control system.
Refer to
.
2010 Pathfinder
CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
CHG-7
< FUNCTION DIAGNOSIS >
C
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B
A
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P
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POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
System Diagram
INFOID:0000000005255208
System Description
INFOID:0000000005255209
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 generation variable voltage control system, power generation
is performed according to the characteristic of the IC regulator in the generator.
Component Description
INFOID:0000000005255210
ALMIA0057GB
Component part
Description
Battery current sensor
The battery current sensor is installed on the battery cable at the
negative terminal. The battery current sensor detects the charg-
ing/discharging current of the battery and sends a voltage signal
to the ECM according to the current value detected.
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.
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.
2010 Pathfinder
CHG-8
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM PRELIMINARY INSPECTION
COMPONENT DIAGNOSIS
CHARGING SYSTEM PRELIMINARY INSPECTION
Inspection Procedure
INFOID:0000000005255211
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 and fusible link.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Be sure to eliminate cause of malfunction before installing new fuse or fusible link.
3.
CHECK GENERATOR GROUND TERMINAL CONNECTION
Verify connector E209 terminal 5 (generator ground harness) is clean and tight.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair connection.
4.
CHECK DRIVE BELT TENSION
Check drive belt tension. Refer to
(VK56DE).
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair as needed.
Unit
Power source (Power supply terminals)
Fuse or Fusible Link
Generator
Battery (terminal 3)
Fuse 30
Battery (terminal 1)
Fusible Link
A
Combination meter
Ignition switch ON (terminal 2)
Fuse 14
2010 Pathfinder
CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION
INSPECTION
CHG-9
< COMPONENT DIAGNOSIS >
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B
A
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POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPER-
ATION INSPECTION
Inspection Procedure
INFOID:0000000005255212
Regarding Wiring Diagram information, refer to
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-79, "CONSULT-III Function (ENGINE)"
EC-557, "CONSULT-III Function (ENGINE)"
(VK56DE).
Is the inspection result normal?
YES
>> GO TO 2
NO
>> 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” in “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 inspection result normal?
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-14, "CONSULT - III Function (IPDM E/R)"
.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Check applicable parts, and repair or replace corresponding parts.
4.
CHECK HARNESS BETWEEN GENERATOR AND IPDM E/R
“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 %
2010 Pathfinder
CHG-10
< COMPONENT DIAGNOSIS >
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION
INSPECTION
1. Turn ignition switch OFF.
2. Disconnect generator connector E205 and IPDM E/R connector
E122.
3. Check continuity between generator harness connector E205
(A) terminal 4 and IPDM E/R harness connector E122 (B) termi-
nal 37.
4. Check continuity between generator harness connector E122
(A) terminal 4 and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-33, "Removal and Installation of IPDM E/R"
.
NO
>> Repair harness or connector between IPDM E/R and generator.
A
B
Continuity
Connector
Terminal
Connector
Terminal
E205
4
E122
37
Yes
A
—
Continuity
Connector
Terminal
E205
4
Ground
No
ALMIA0196ZZ
2010 Pathfinder
CHG
B TERMINAL CIRCUIT
CHG-11
< COMPONENT DIAGNOSIS >
C
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B
A
O
P
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B TERMINAL CIRCUIT
Description
INFOID:0000000005255213
The terminal “1” (B) circuit supplies power to charge the battery and operate the vehicles electrical system.
Diagnosis Procedure
INFOID:0000000005255214
Regarding Wiring Diagram information, refer to
1.
CHECK TERMINAL “1” CONNECTION
1. Turn ignition switch OFF.
2. Verify terminal “1” is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair terminal “1” connection. Confirm repair by performing complete Starting/Charging system
test. Refer to diagnostic station instruction instruction.
2.
CHECK TERMINAL “1” CIRCUIT
Check voltage between generator connector E206 terminal 1 and
ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness for open between generator and fusible
link.
3.
CHECK TERMINAL “1” CONNECTION (VOLTAGE DROP TEST)
1. Start engine, then engine running at idle and warm.
2. Check voltage between battery positive terminal and generator
connector E206 terminal 1.
Is the inspection result normal?
YES
>> Terminal “1” circuit is normal. Refer to
NO
>> Check harness between battery and generator for high resistance.
(+)
(-)
Voltage
Connector
Terminal
E206
1
Ground
Battery voltage
ALMIA0197ZZ
(+)
(-)
Voltage
Connector
Terminal
E206
1
Battery positive terminal
Less than 0.2V
ALMIA0198ZZ
2010 Pathfinder
CHG-12
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT
L TERMINAL CIRCUIT
Description
INFOID:0000000005255215
The terminal “2” (L) circuit controls the charge warning lamp. The charge warning lamp illuminates when the
ignition switch is set to ON or START. When the generator is providing sufficient voltage with the engine run-
ning, the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a
malfunction is indicated.
Diagnosis Procedure
INFOID:0000000005255216
Regarding Wiring Diagram information, refer to
1.
CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
Verify generator connector E205 terminal 2 is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair the connection. Confirm repair by performing complete Starting/Charging system test.
Refer to diagnostic station instruction instruction.
2.
CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect generator connector E205.
2. Apply ground to generator harness connector E205 terminal 2
with the ignition switch in the ON position.
Is the inspection result normal?
YES
>> Check generator function. Refer to
.
NO
>> GO TO 3
3.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect the generator connector E205 and combination meter connector M23.
3. Check continuity between generator harness connector E205 terminal 2 and combination meter harness
connector M24 terminal 2.
4. Check continuity between generator harness connector E205 terminal 2 and ground.
Is the inspection result normal?
YES
>> Replace the combination meter. Refer to
MWI-96, "Removal and Installation"
NO
>> Repair the harness or connector.
Charge lamp should illuminate
ALMIA0200ZZ
Terminal
Terminal
Continuity
Connector
Terminal
Connector
Terminal
E205
2
M24
2
Yes
Terminal
—
Continuity
Connector
Terminal
E205
2
Ground
No
2010 Pathfinder
CHG
S TERMINAL CIRCUIT
CHG-13
< COMPONENT DIAGNOSIS >
C
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B
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P
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S TERMINAL CIRCUIT
Description
INFOID:0000000005255217
The output voltage of the generator is controlled by the IC regulator at terminal “3” (S) detecting the input volt-
age. Terminal “3” circuit detects the battery voltage to adjust the generator output voltage with the IC regulator.
Diagnosis Procedure
INFOID:0000000005255218
Regarding Wiring Diagram information, refer to
1.
CHECK VOLTAGE REGULATOR CIRCUIT CONNECTION
Check to see if connector E205 terminal 3 is clean and tight.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair terminal connection. Confirm repair by performing complete Starting/Charging system test.
Refer to diagnostic station instruction instruction.
2.
CHECK VOLTAGE REGULATOR CIRCUIT
Check voltage between generator harness connector E205 terminal
3 and ground.
Is the inspection result normal?
YES
>> Refer to
.
NO
>> Check harness for open between generator and fuse.
3 - ground
Battery voltage
ALMIA0201ZZ
2010 Pathfinder
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