Nissan Frontier D40. Manual - part 175

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

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.

Are the continuity test results as specified?

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

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CHG-10

< COMPONENT DIAGNOSIS >

B TERMINAL CIRCUIT

B TERMINAL CIRCUIT

Description

INFOID:0000000005272444

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

Diagnosis Procedure

INFOID:0000000005272445

Regarding Wiring Diagram information, refer to 

CHG-13, "Wiring Diagram"

.

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 manual.

2.

CHECK TERMINAL “1” CIRCUIT

Check voltage between generator connector E206 terminal 1 and
ground.

Is voltage reading as specified?

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 voltage reading as specified?

YES

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

CHG-4, "Work

Flow"

.

NO

>> Check harness between battery and generator for high resistance.

(+)

(-)

Voltage

Connector

Terminal

E206

1

Ground

Battery voltage

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(+)

(-)

Voltage

Connector

Terminal

E206

1

Battery positive terminal

Less than 0.2V

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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:0000000005272446

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:0000000005272447

Regarding Wiring Diagram information, refer to 

CHG-13, "Wiring Diagram"

.

1.

CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION

Verify generator connector E205 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 diagnostic station instruction manual.

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.

Does the charge lamp illuminate?

YES

>> Check generator function. Refer to 

CHG-4, "Work Flow"

.

NO

>> GO TO 3

3.

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect the combination meter connector M24.

3.

Check continuity between generator harness connector E205 (A
)terminal 2 and combination meter harness connector M24 (B)
terminal 2.

4.

Check continuity between generator harness connector E205
(A) terminal 2 and ground.

Are the continuity results as specified?

YES

>> Replace the combination meter. Refer to  

IP-11, "Removal and Installation"

.

NO

>> Repair the harness or connector.

Charge lamp should illuminate

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Terminal

Terminal

Continuity

Connector

Terminal

Connector

Terminal

E205

2

M24

2

Yes

Terminal

—

Continuity

Connector

Terminal

E205

2

Ground

No

AWMIA0499ZZ

CHG-12

< COMPONENT DIAGNOSIS >

S TERMINAL CIRCUIT

S TERMINAL CIRCUIT

Description

INFOID:0000000005272448

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:0000000005272449

Regarding Wiring Diagram information, refer to 

CHG-13, "Wiring Diagram"

.

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 manual.

2.

CHECK VOLTAGE REGULATOR CIRCUIT

Check voltage between generator harness connector E205 terminal
3 and ground.

Does battery voltage exist?

YES

>> Refer to 

CHG-4, "Work Flow"

.

NO

>> Check harness for open between generator and fuse.

3 - ground

Battery voltage

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