Nissan Quest E52. Manual - part 279

CHG

DIAGNOSIS AND REPAIR WORK FLOW

CHG-19

< 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 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 

CHG-27, "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-28, "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 alternator. Refer to 

CHG-31, "Removal and Installation"

.

9.

“B” TERMINAL CIRCUIT INSPECTION

Check “B” terminal circuit. Refer to 

CHG-24, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace alternator. Refer to 

CHG-31, "Removal and Installation"

.

NO

>> Repair as needed.

10.

INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)

CHG-20

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

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-31, "Removal and Installation"

.

NO

>> GO TO 11.

11.

CHECK “L” TERMINAL CIRCUIT (OPEN)

Check “L” terminal circuit (open). Refer to 

CHG-25, "Diagnosis Procedure"

.

>> Repair as needed.

CHG

CHARGING SYSTEM PRELIMINARY INSPECTION

CHG-21

< BASIC INSPECTION >

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CHARGING SYSTEM PRELIMINARY INSPECTION

Inspection Procedure

INFOID:0000000009650424

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 the cause of malfunction before installing new fuse.

3.

CHECK “E” TERMINAL CONNECTION (ALTERNATOR GROUND)

Check if “E” terminal (alternator ground) is clean and tight.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair “E” terminal (alternator ground) connection.

4.

CHECK DRIVE BELT TENSION

Check drive belt tension. Refer to 

EM-14, "Checking"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair as needed.

Unit

Power source (Power supply terminals)

Fuse No.

Alternator

Battery (“S” terminal)

38

Combination meter

Ignition switch ON (“L” terminal)

4

CHG-22

< BASIC INSPECTION >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION 

INSPECTION

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPER-
ATION INSPECTION

Inspection Procedure

INFOID:0000000009650425

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)

Perform ECM self-diagnosis with CONSULT. Refer to 

EC-69, "CONSULT Function"

.

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.

Check that the selector lever is in “P” or “N” position and that all of the electric loads and A/C, etc. are
turned OFF.

3.

Select “ALTERNATOR DUTY” at “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 measurement value within the specification?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK IPDM E/R (CONSULT)

Perform IPDM E/R self-diagnosis with CONSULT. Refer to 

PCS-13, "CONSULT Function (IPDM E/R)"

.

Self-diagnostic results content

No malfunction detected>> GO TO 4.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.

4.

CHECK HARNESS BETWEEN ALTERNATOR AND IPDM E/R

1.

Turn ignition switch OFF.

2.

Disconnect alternator connector and IPDM E/R connector.

3.

Check continuity between alternator harness connector and IPDM E/R harness connector.

4.

Check continuity between alternator harness connector and ground.

“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 %

Alternator harness connector

IPDM E/R harness connector

Continuity

Connector

Terminal

Connector

Terminal

F60

5

 F12

76

Existed