Nissan Sentra. Manual - part 767

SEC-96

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2608 STARTER RELAY

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK STARTER RELAY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R.

3. Disconnect BCM connector.

4. Check continuity between IPDM E/R harness connector and BCM harness connector.

5. Check continuity between starter relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

3. Perform DTC CONFIRMATION PROCEDURE for B2605. Refer to 

SEC-93, "DTC Logic"

.

Is DTC B2605 detected again?

YES

>> Replace IPDM E/R. Refer to 

PCS-30, "Removal and Installation"

.

NO

>> Inspection End.

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M83

74

Ground

CVT selector lever

N or P position

Battery voltage

Other than above

0

M/T clutch pedal

Depressed

Battery voltage

Released

0

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E46

44

M83

74

Yes

IPDM E/R

Ground

Continuity

Connector

Terminal

E46

44

No

B260F ENGINE STATUS

SEC-97

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B260F ENGINE STATUS

Description

INFOID:0000000009756741

BCM receives the engine status signal from ECM via CAN communication.

DTC Logic

INFOID:0000000009756742

DTC DETECTION LOGIC

NOTE:

• If DTC B260F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-63, "DTC Logic"

.

• If DTC B260F is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-64, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait 2 seconds or more.

2. Check DTC in Self Diagnostic Result mode of BCM using CONSULT.
Is DTC detected?

YES

>> Go to 

SEC-97, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009756743

1.

INSPECTION START

1. Turn ignition switch ON.

2. Select Self Diagnostic Result mode of BCM using CONSULT.

3. Touch ERASE.

4. Perform DTC CONFIRMATION PROCEDURE for DTC B260F. Refer to 

SEC-97, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 2.

NO

>> Inspection End.

2.

REPLACE ECM

1. Replace ECM.

Refer to 

EC-485, "Removal and Installation"

.

2. Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”.

Refer to 

EC-135, "Work Procedure"

.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B260F

ECM CAN COMM

BCM has not yet received the engine status 
signal from ECM when ignition switch is in 
the ON position.

• Harness or connectors

(The CAN communication line is open 
or shorted.)

• ECM

SEC-98

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B261F ASCD CLUTCH SWITCH

B261F ASCD CLUTCH SWITCH

DTC Logic

INFOID:0000000009756744

DTC DETECTION LOGIC

NOTE:

• If DTC B261F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-63, "DTC Logic"

.

• If DTC B261F is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-64, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine.

2. Drive vehicle at a speed of 40 km/h (24.8 MPH) or more for 10 seconds.

3. Decrease the vehicle speed to below 40 km/h (24.8 MPH).

4. Repeat steps 2 and 3 twice (total of 3 times).

5. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT.
Is DTC detected?

YES >> Go 

to 

SEC-98, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000009756745

Regarding Wiring Diagram information, refer to 

SEC-25, "Wiring Diagram"

.

1.

CHECK DTC OF COMBINATION METER

Check DTC in “Self Diagnostic Result” mode of “METER/M&A” using CONSULT.

Refer to 

MWI-26, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK FUSE

1. Turn power switch OFF.

2. Check that the following fuse in the fuse block (J/B) is not blown.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace the blown fuse after repairing the cause of blowing.

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

Possible cause

B261F

ASCD CNCL/CLTCH SW
(ASCD cancel/clutch switch)

BCM detects the following status for 10 seconds 
3 times
• Clutch pedal position switch input: 0 V
• Vehicle speed: 40 km/h (24.8 MPH) or more

• Harness or connectors.

(CAN communication line is open 
or shorted.)

• Harness or connectors.

(Clutch pedal position switch cir-
cuit is open or shorted)

• Clutch pedal position switch
• Combination meter
• BCM 

Signal name

Fuse No.

Ignition power supply

5 (10 A)

B261F ASCD CLUTCH SWITCH

SEC-99

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

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M

A

B

SEC

N

O

P

3.

CHECK CLUTCH PEDAL POSITION SWITCH POWER SUPPLY

1. Disconnect clutch pedal position switch connector.

2. Turn ignition switch ON.

3. Check voltage between clutch pedal position switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK CLUTCH PEDAL POSITION SWITCH SIGNAL 

1. Connect clutch pedal position switch connector.

2. Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

>> Inspection End

6.

CHECK CLUTCH PEDAL POSITION SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity between clutch pedal position switch harness connector and BCM harness connector.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

7.

CHECK CLUTCH PEDAL POSITION SWITCH

Refer to 

SEC-100, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace clutch pedal position switch. Refer to 

CL-10, "Exploded View"

.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

(+)

(–)

Voltage (V)

(Approx.)

Clutch pedal position switch

Connector

Terminal

E32

1

Ground

Battery voltage

(+)

(–)

Condition

Voltage

BCM

Connector

Terminal

M84

37

Ground

Clutch pedal

Released

Battery voltage

Depressed

0 – 1.5 V

Clutch pedal position switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

E32

2

M84

37

Yes