Nissan Pathfinder (2012 year). Instruction — part 122
CHG-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000007355042
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tool
INFOID:0000000007355043
Tool number
(Kent-Moore No.)
Tool name
Description
—
(—) Model GR8-1200 NI
Multitasking battery and electrical di-
agnostic station
Tests batteries, starting and charging sys-
tems and charges batteries.
For operating instructions, refer to diagnostic
station instruction instruction.
—
(—) Model EXP-800 NI
Battery and electrical diagnostic ana-
lyzer
Tests batteries and charging systems.
For operating instructions, refer to diagnostic
analyzer instruction instruction.
AWIIA1239ZZ
JSMIA0806ZZ
Tool name
Description
Power tool
Loosening nuts, screws and bolts
PIIB1407E
August 2012
2012 Pathfinder
CHG
DIAGNOSIS AND REPAIR WORKFLOW
CHG-5
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow (With EXP-800 NI or GR8-1200 NI)
INFOID:0000000008802085
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 Instruction for proper charging system diagnosis procedures.
August 2012
2012 Pathfinder
CHG-6
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
OVERALL SEQUENCE
DETAILED FLOW
NOTE:
To ensure a complete and thorough diagnosis, the battery, stater and generator test segments must be done
as a set from start to finish.
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
AWMIA1283GB
August 2012
2012 Pathfinder
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DIAGNOSIS AND REPAIR WORKFLOW
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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” 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 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 Instruction 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-28, "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
Is the “L” terminal circuit normal?
YES
>> Replace generator. 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.
August 2012
2012 Pathfinder
CHG-8
< 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-28, "Removal and Installation"
Is generator pulley normal?
YES
>> Replace generator. 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 generator. 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 GENERATOR PULLEY
Check generator pulley. Refer to
CHG-28, "Removal and Installation"
Is generator pulley normal?
YES
>> Replace generator. 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 generator. Refer to
CHG-28, "Removal and Installation"
NO
>> Repair as needed.
Work Flow (Without EXP-800 NI or GR8-1200 NI)
INFOID:0000000008802086
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.
August 2012
2012 Pathfinder
CHG
DIAGNOSIS AND REPAIR WORKFLOW
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• Use fully charged battery.
DETAILED FLOW
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
.
>> 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” 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 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?
ALMIA0577GB
August 2012
2012 Pathfinder
CHG-10
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
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 terminal “L” circuit for (short). Refer to
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair as needed.
7.
“S” TERMINAL CIRCUIT INSPECTION
Check terminal “S” 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 generator. 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 generator. Refer to
CHG-28, "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-28, "Removal and Installation"
NO
>> GO TO 11.
11.
CHECK “L” TERMINAL CIRCUIT (OPEN)
Check “L” terminal circuit (OPEN). Refer to
.
>> Repair as needed.
August 2012
2012 Pathfinder
CHG
CHARGING SYSTEM
CHG-11
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
CHARGING SYSTEM
System Diagram
INFOID:0000000007355045
System Description
INFOID:0000000007355046
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:0000000007355047
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
August 2012
2012 Pathfinder
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