Nissan Sentra. Manual - part 599

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

INL-43

< DTC/CIRCUIT DIAGNOSIS >

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BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

Description

INFOID:0000000009757586

Provides the battery saver output/power supply. Also cuts the power supply when the interior lamp battery

saver is activated.

Component Function Check

INFOID:0000000009757587

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION

CONSULT

1. Turn ignition switch ON.

2. Turn each interior lamp to the ON position.

-

Interior room lamp

-

Vanity mirror lamps

-

Map lamp 

-

Trunk room lamp

3. Select BATTERY SAVER of BCM (BATTERY SAVER) active test item.

4. While operating the test item, check that each interior room lamp turns ON/OFF.

Is the inspection result normal?

YES

>> Battery saver output/power supply circuit is normal.

NO

>> Refer to 

INL-43, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009757588

Regarding Wiring Diagram information, refer to 

INL-17, "Wiring Diagram"

.

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT

CONSULT

1. Turn ignition switch ON.

2. Select BATTERY SAVER of BCM (BATTERY SAVER) active test item.

3. While operating the test item, check voltage between BCM connector and ground.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace BCM after making sure battery saver output/power supply circuit is not shorted to volt-

age. Refer to 

BCS-73, "Removal and Installation"

 (with Intelligent Key) or 

BCS-126, "Removal

and Installation"

 (without Intelligent Key).

2.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT

OFF

: Interior room lamp OFF

ON

: Interior room lamp ON

BCM

Ground

Test item

Voltage

Connector

Terminal

BATTERY SAVER

M85

89

OFF

0V

ON

Battery voltage

BCM

Ground

Test item

Voltage

Connector

Terminal

BATTERY SAVER

M20

62

OFF

0V

ON

Battery voltage

INL-44

< DTC/CIRCUIT DIAGNOSIS >

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect the following connectors.

-

BCM 

-

Interior room lamp

-

Vanity mirror lamp LH

-

Vanity mirror lamp RH

-

Map lamp 

-

Trunk room lamp 

3. Check continuity between BCM connector  and each interior lamp connector.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the harness or connector.

3.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT

Check continuity between BCM connector and ground.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> Check that each interior room lamp has no internal short circuit.

NO

>> Repair or replace the harness or connector.

BCM

Each interior lamp

Continuity

Connector

Terminal

Connector

Terminal

M85

89

Interior room lamp

R5

3

Yes

Vanity mirror lamp LH

R7

2

Vanity mirror lamp RH

R8

2

Map lamp

R3

1

Trunk room lamp 

B58

1

BCM

Each interior lamp

Continuity

Connector

Terminal

Connector

Terminal

M20

62

Interior room lamp

R5

3

Yes

Vanity mirror lamp LH

R7

2

Vanity mirror lamp RH

R8

2

Map lamp

R3

1

Trunk room lamp 

B58

1

Connector

Terminal

—

Continuity

M85

89

Ground

No

Connector

Terminal

—

Continuity

M20

62

Ground

No

INTERIOR ROOM LAMP CONTROL CIRCUIT

INL-45

< DTC/CIRCUIT DIAGNOSIS >

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INTERIOR ROOM LAMP CONTROL CIRCUIT

Description

INFOID:0000000009757589

Controls each interior room lamp (ground side) by PWM signal.

NOTE:

PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).

Component Function Check

INFOID:0000000009757590

CAUTION:

 Before performing the diagnosis, check that the following are normal.

• Interior room lamp power supply

• Room lamp bulb

• Map lamp bulb

1.

CHECK INTERIOR ROOM LAMP CONTROL FUNCTION

CONSULT ACTIVE TEST

1. Se the map lamp switch or room lamp switch to DOOR.

2. Turn ignition switch ON.

3. Select INT LAMP of BCM (INT LAMP) active test item.

4. While operating the test items, check that each interior room lamp turns ON/OFF (gradual brightening/

dimming).

Does the interior room lamp turns ON/OFF (gradual brightening/dimming)?

YES

>> Interior room lamp control circuit is normal.

NO

>> Refer to 

INL-45, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009757591

Regarding Wiring Diagram information, refer to 

INL-17, "Wiring Diagram"

.

1.

CHECK INTERIOR ROOM LAMP CONTROL OUTPUT

CONSULT ACTIVE TEST

1. Turn ignition switch OFF.

2. Remove all the bulbs of room lamp and map lamp.

3. Turn ignition switch ON.

4. Select INT LAMP of BCM (INT LAMP) active test item.

5.  While operating the test item, check continuity between BCM harness connector and ground.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> Interior room lamp control circuit is operating normally.

Fixed ON>>GO TO 3.

On

: Interior room lamp gradual brightening

Off

: Interior room lamp gradual dimming

BCM

Ground

Test item

Continuity

Connector

Terminal

M85

82

INT LAMP

On

Yes

Off

No

BCM

Ground

Test item

Continuity

Connector

Terminal

M20

60

INT LAMP

On

Yes

Off

No

INL-46

< DTC/CIRCUIT DIAGNOSIS >

INTERIOR ROOM LAMP CONTROL CIRCUIT

Fixed OFF>>GO TO 2.

2.

CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector and room lamp and map lamp connector.

3. Check continuity between BCM harness connector and room lamp harness connector.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> Check interior room lamps for an open. If NG, replace lamp in question. Refer to 

INL-55,

"Removal and Installation"

 (room lamp)  or 

INL-52, "Removal and Installation"

 (map lamp). If OK,

replace BCM. Refer to 

BCS-73, "Removal and Installation"

 (with Intelligent Key), 

BCS-126,

"Removal and Installation"

 (without Intelligent Key). 

NO

>> Repair or replace harness or connector.

3.

CHECK INTERIOR ROOM LAMP CONTROL SHORT TO GROUND

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity between BCM harness connector and ground.

With Intelligent Key

Without Intelligent Key

Is the inspection result normal?

YES

>> Check interior room lamps for an internal short to ground. If NG, replace lamp in question. Refer to

INL-55, "Removal and Installation"

 (room lamp)  or 

INL-52, "Removal and Installation"

 (map

lamp). If OK, replace BCM. Refer to 

BCS-73, "Removal and Installation"

 (with Intelligent Key),

BCS-126, "Removal and Installation"

 (without Intelligent Key).

NO

>> Repair or replace harness or connector.

BCM

Room lamp

Map lamp

Continuity

Connector

Terminal

Connector

Terminal

Connector

Terminal

M85

82

R5

2

R3

3

Yes

BCM

Room lamp

Map lamp

Continuity

Connector

Terminal

Connector

Terminal

Connector

Terminal

M20

60

R5

2

R3

3

Yes

BCM

Ground

Continuity

Connector

Terminal

M85

82

No

BCM

Ground

Continuity

Connector

Terminal

M20

60

No