Nissan Sentra. Manual - part 772

SEC-116

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B26FB CLUTCH SWITCH

B26FB CLUTCH SWITCH

DTC Logic

INFOID:0000000009756766

DTC DETECTION LOGIC

NOTE:

• If DTC B26FB is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-63, "DTC Logic"

.

• If DTC B26FB 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.

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

YES >> Go 

to 

SEC-116, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000009756767

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 B26FB. Refer to 

SEC-116, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 2.

NO

>> Inspection End

2.

REPLACE ECM

Replace ECM. Refer to 

EC-485, "Removal and Installation"

>> Inspection End

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

Possible cause

B26FB

CLUTCH SWITCH
(Clutch switch)

BCM receives the abnormal signal of clutch 
pedal position switch from ECM via CAN 
communication.

• Harness or connector

(CAN communication line is 
open or shorted)

• ECM

B26FC KEY REGISTRATION

SEC-117

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B26FC KEY REGISTRATION

DTC Logic

INFOID:0000000009756768

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

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

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

YES

>> Go to 

SEC-117, "Diagnosis Procedure"

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009756769

1.

REPLACE INTELLIGENT KEY

1. Prepare Intelligent Key that matches the vehicle.

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

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

YES

>> GO TO 2.

NO

>> Inspection End.

2.

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26FC

KEY REGISTRATION

Intelligent Key that does not match the vehicle is 
registered.

• Improper registration operation
• Intelligent Key
• BCM

SEC-118

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B209F CRANKING REQUEST CIRCUIT

B209F CRANKING REQUEST CIRCUIT

DTC Logic

INFOID:0000000009756770

DTC DETECTION LOGIC

NOTE:

If DTC B209F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

BCS-

63, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Perform DTC CONFIRMATION PROCEDURE for DTC P1650. Refer to 

EC-399, "DTC Logic"

.

2. Turn ignition switch ON.

3. Check DTC in Self Diagnostic Result mode of IPDM E/R using CONSULT.
Is DTC detected?

YES

>> Refer to 

SEC-118, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000009756771

Regarding Wiring Diagram information, refer to 

SEC-25, "Wiring Diagram"

.

1.

CHECK CRANKING REQUEST SIGNAL

1. Turn ignition switch ON.

2. Check voltage between IPDM E/R harness connector and ground under the following conditions.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK CRANKING REQUEST SIGNAL CIRCUIT

1. Turn ignition switch OFF.

DTC No.

CONSULT screen items

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

B209F

STR CUT OFF OPEN 
(Starter cut off open)

When the following items do not match, a 
malfunction is detected.
• Cranking request signal from ECM
• Starter control relay control signal from 

ECM (CAN)

• Harness or connectors

(CAN communication line is open or 
shorted.)

• Harness or connectors

(Cranking request signal circuit is open 
or shorted.)

• IPDM E/R
• ECM

(+)

(–)

Condition

Voltage

IPDM E/R

Connector

Terminal

E46

37

Ground

Ignition switch OFF

0 – 1 V

Ignition switch ON

• Engine: Stopped
• Selector lever position: P

• Engine: Stopped
• Selector lever position: 

Other than P

9 – 16 V

Engine running

B209F CRANKING REQUEST CIRCUIT

SEC-119

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

2. Disconnect IPDM E/R connector.

3. Disconnect ECM connector.

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

5. Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

REPLACE IPDM E/R

1. Replace IPDM E/R. Refer to 

PCS-30, "Removal and Installation"

.

2. Perform DTC CONFIRMATION PROCEDURE for DTC B209F. Refer to 

SEC-118, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> Inspection End

4.

REPLACE ECM

Replace ECM.

Refer to 

EC-485, "Removal and Installation"

.

>> Inspection End

IPDM E/R

ECM

Continuity

Connector

Terminal

Connector

Terminal

E46

37

E16

101

Yes

IPDM E/R

Ground

Continuity

Connector

Terminal

E46

37

No