Nissan Sentra. Manual - part 124

BCS-66

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2562 LOW VOLTAGE

B2562 LOW VOLTAGE

DTC Logic

INFOID:0000000009757342

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 DTC CONFIRMATION

1. Erase DTC.

2. Turn ignition switch OFF.

3. Perform the Self Diagnostic Result of BCM with CONSULT, after the ignition switch has been turned ON

for 120 seconds or more.

Is any DTC detected?

YES

>> Refer to 

BCS-66, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009757343

1.

 CHECK BATTERY VOLTAGE

Check battery voltage. 
Is battery voltage less than 8.8V?

YES

>> Charge battery and retest. Refer to 

CHG-14, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

 or

CHG-17, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"

.

NO

>> GO TO 2.

2.

 CHECK POWER SUPPLY AND GROUND CIRCUIT

Check BCM power supply and ground circuit. Refer to 

BCS-67, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

 BCM SELF DIAGNOSTIC RESULT

Perform Self Diagnostic Result of BCM with CONSULT. Refer to 

BCS-24, "BCM : CONSULT Function (BCM -

BCM)"

.

Is DTC B2562 CRNT?

YES

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

CONSULT Display

DTC Detection Condition

Possible Cause

LOW VOLTAGE
[B2562]

When the power supply voltage to BCM remains 
less than 8.8 V for 120 seconds or more

• Harness or connector (power supply circuit)
• Vehicle battery

BCS

POWER SUPPLY AND GROUND CIRCUIT

BCS-67

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000009757344

Regarding Wiring Diagram information, refer to 

BCS-51, "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. Disconnect BCM connector M85.

2. Check voltage between BCM connector M85 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 M85 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Terminal No.

Signal name

Fuses and fusible link No.

88

Battery power supply

12 (10A)

90

G (40A)

BCM

Ground

Voltage

Connector

Terminal

M85

88

—

Battery voltage

90

BCM

Ground

Continuity

Connector

Terminal

M85

93

—

Yes

BCS-68

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

COMBINATION SWITCH INPUT CIRCUIT

COMBINATION SWITCH INPUT CIRCUIT

Diagnosis Procedure

INFOID:0000000009757345

Regarding Wiring Diagram information, refer to 

BCS-51, "Wiring Diagram"

.

1.

CHECK INPUT 1 - 5 CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect BCM and combination switch connectors.

3. Check continuity between BCM connector and combination switch connector.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connectors.

2.

CHECK INPUT 1 - 5 CIRCUIT FOR SHORT

Check for continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> Repair harness or connectors.

NO

>> GO TO 3.

3.

CHECK BCM OUTPUT VOLTAGE

1. Connect BCM connector.

2. Check voltage between BCM connector and ground.

Combination switch 

signal

BCM

Combination switch

Continuity

Connector

Terminal

Connector

Terminal

INPUT 1

M84

36

M28

11

Yes

INPUT 2

35

9

INPUT 3

34

7

INPUT 4

33

10

INPUT 5

32

13

Combination switch

signal

BCM

Ground

Continuity

Connector

Terminal

INPUT 1

M84

36

No

INPUT 2

35

INPUT 3

34

INPUT 4

33

INPUT 5

32

BCS

COMBINATION SWITCH INPUT CIRCUIT

BCS-69

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> Replace combination switch.

NO

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

BCM signal

Terminals

Voltage

(+)

(

−)

BCM

Ground

Connector

Terminal

OUTPUT 1

M84

36

Refer to 

BCS-29, "Refer-

ence Value"

.

OUTPUT 2

35

OUTPUT 3

34

OUTPUT 4

33

OUTPUT 5

32