Nissan Sentra. Manual - part 284

DLK-252

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000010291095

Regarding Wiring Diagram information, refer to 

BCS-111, "Wiring Diagram"

.

1.

CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connectors.

3. Check voltage between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Terminal No.

Signal name

Fuses and fusible link No.

63

Battery power supply

12 (10A)

70

G (40A)

11

Ignition switch ACC or ON

18 (10A)

BCM

Ground

Ignition switch position

Connector

Terminal

OFF

ACC

ON

M20

63

Battery voltage

Battery voltage

Battery voltage

70

M21

11

—

0 V

Battery voltage

Battery voltage

BCM

Ground

Continuity

Connector

Terminal

M20

65

—

Yes

DOOR SWITCH

DLK-253

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

DOOR SWITCH

Description

INFOID:0000000009756558

Detects door open/close condition.

Component Function Check

INFOID:0000000009756559

1.

CHECK FUNCTION

 With CONSULT

Check door switches DOOR SW-DR, DOOR SW-AS, DOOR SW-RL, DOOR SW-RR in Data Monitor mode

with CONSULT.

Is the inspection result normal?

YES

>> Door switch is OK.

NO

>> Refer to 

DLK-253, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009756560

Regarding Wiring Diagram information, refer to 

DLK-224, "Wiring Diagram"

.

1.

CHECK DOOR SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.

2. Check signal between BCM connector and ground with oscilloscope.

Monitor item

Condition

DOOR SW-DR

CLOSE 

→ OPEN: OFF → ON

DOOR SW-AS

DOOR SW-RL

DOOR SW-RR

DLK-254

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

DOOR SWITCH

Is the inspection result normal?

YES

>> GO TO 4

NO

>> GO TO 2

2.

CHECK DOOR SWITCH CIRCUIT 

1. Disconnect BCM connector.

2. Check continuity between BCM connector and door switch connector.

Terminals

Door condition

Voltage (V)

(Approx.)

(+)

(–)

BCM

connector

Terminal

B57

45

Ground

Front RH

OPEN

0

CLOSE

7.0 - 8.0V

48

Rear RH

OPEN

0

CLOSE

7.0 - 8.0V

46

Front LH

OPEN

0

CLOSE

7.0 - 8.0V

47

Rear LH

OPEN

0

CLOSE

7.0 - 8.0V

PKIB4960J

PKIB4960J

PKIB4960J

PKIB4960J

DOOR SWITCH

DLK-255

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

3. Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between BCM and door switch.

3.

CHECK DOOR SWITCH 

Refer to 

DLK-255, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace malfunctioning door switch.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> Inspection End.

Component Inspection

INFOID:0000000009756561

1.

CHECK DOOR SWITCH

1. Turn ignition switch OFF.

2. Disconnect door switch connector.

3. Check door switch.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace malfunctioning door switch.

BCM connector

Terminal

Door switch

connector

Terminal

Continuity 

B57

45

B28 (Front RH)

3

Yes

48

B41 (Rear RH)

46

B21 (Front LH)

47

B26 (Rear LH)

BCM connector

Terminal

Ground

Continuity 

B57

45

No

48

46

47

Terminal

Door switch condition

Continuity

Door switch

3

Ground part of 

door switch

Pressed

No

Released

Yes