Nissan Altima L32. Manual - part 181

CHG-8

< COMPONENT DIAGNOSIS >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION 

INSPECTION

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPER-
ATION INSPECTION

Inspection Procedure

INFOID:0000000004205654

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-125, "CONSULT-III Function"

 (QR25DE for Cali-

fornia), 

EC-654, "CONSULT-III Function"

 (QR25DE except for California) or 

EC-1155, "CONSULT-III 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-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 measurement value within the specification?

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-17, "CONSULT - III 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 GENERATOR AND IPDM E/R

1. Turn ignition switch OFF.

2. Disconnect generator connector and IPDM E/R 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 %

CHG

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION 

INSPECTION

CHG-9

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

3. Check continuity between generator harness connector F7 (A)

terminal 4 and IPDM E/R harness connector F10 (B) terminal

76.

4. Check continuity between generator harness connector F7 (A)

terminal 4 and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-48, "Removal and Installation"

.

NO

>> Repair harness or connector between IPDM E/R and generator. 

A

B

Continuity

Connector

Terminal

Connector

Terminal

F7

4

F10

76

Yes

A

—

Continuity

Connector

Terminal

F7

4

Ground

No

ALMIA0343ZZ

CHG-10

< COMPONENT DIAGNOSIS >

B TERMINAL CIRCUIT

B TERMINAL CIRCUIT

Description

INFOID:0000000004205655

The terminal “1” (B) circuit supplies power to charge the battery and operate the vehicles electrical system.

Diagnosis Procedure

INFOID:0000000004205656

1.

CHECK TERMINAL “1” CONNECTION

1. Turn ignition switch OFF.

2. Check if 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 Technical Service Bulletin.

2.

CHECK TERMINAL “1” CIRCUIT

Check voltage between generator connector F6 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 F6 terminal 1.

Is the inspection result normal?

YES

>> Terminal “1” circuit is normal. Refer to 

CHG-2, "Work

Flow"

.

NO

>> Check harness between battery and generator for high

resistance.

1 - ground

Battery voltage

ALMIA0344ZZ

1 - B+ 

Less than 0.2V

ALMIA0345ZZ

CHG

L TERMINAL CIRCUIT

CHG-11

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

L TERMINAL CIRCUIT

Description

INFOID:0000000004205657

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:0000000004205658

1.

CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION

Check to see if generator connector F7 terminal 2 is clean and tight. 
Is the connection secure?

YES

>> GO TO 2

NO

>> Repair the connection. Confirm repair by performing complete Starting/Charging system test.

Refer to Technical Service Bulletin.

2.

CHECK CHARGE WARNING LAMP CIRCUIT

1. Disconnect generator connector F7.

2. Apply ground to generator harness connector F7 terminal 2 with

the ignition switch in the ON position.

Does it illuminate?

YES

>> Check generator function. Refer to 

CHG-2, "Work Flow"

.

NO

>> GO TO 3

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Turn ignition switch OFF.

2. Disconnect the generator connector F7.

3. Disconnect the combination meter connector M24.

4. Check continuity between generator harness connector F7 (A)

terminal 2 and combination meter harness connector M24 (B)

terminal 25.

Is continuity present?

YES

>> Replace the combination meter. Refer to  

MWI-176, "Removal and Installation"

.

NO

>> Repair the harness or connector.

Charge lamp should illuminate

ALMIA0346ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

F7

2

M24

25

Yes

AWMIA0452ZZ