Nissan Leaf. Manual - part 1083

SEC-94

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B261A POWER SWITCH

B261A POWER SWITCH

DTC Logic

INFOID:0000000010119282

DTC DETECTION LOGIC

NOTE:

• If DTC B261A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-61, "DTC Logic"

.

• If DTC B261A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-62, "DTC Logic"

.

*: “ENGINE SW” is indicated on CONSULT screen, however this means power switch on this vehicle.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press power switch for 1 second under the following conditions:

-

Shift position: P

-

Brake pedal: Not depressed

2. Release power switch and wait 1 second.

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

YES

>> Go to 

SEC-94, "Diagnosis Procedure"

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010119283

Regarding Wiring Diagram information, refer to 

SEC-42, "Wiring Diagram"

.

1.

CHECK POWER SWITCH POWER SUPPLY CIRCUIT

1. Turn power switch OFF.

2. Disconnect power switch connector.

3. Disconnect IPDM E/R connector.

4. Check voltage between power switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK POWER SWITCH CIRCUIT 1

1. Check continuity between power switch harness connector and IPDM E/R harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B261A

ENGINE SW*

BCM detects the mismatch between the 
following for 1 second or more:
• Power switch status judged by push 

switch signal

• Power switch status signal from IPDM 

E/R (CAN)

• Harness or connectors

(Power switch circuit is open or shorted)

- Between BCM and power switch
- Between IPDM E/R and power switch
• IPDM E/R
• BCM

(+)

(–)

Voltage (V)

(Approx.)

Power switch

Connector

Terminal

M33

8

Ground

Battery voltage

B261A POWER SWITCH

SEC-95

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

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M

A

B

SEC

N

O

P

2. Check continuity between power switch harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-29, "Removal and Installation"

.

NO

>> Repair harness or connector.

3.

CHECK POWER SWITCH CIRCUIT 2

1. Disconnect BCM connector.

2. Check continuity between power switch harness connector and BCM harness connector.

3. Check continuity between power switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT. Refer to the CON-

SULT Immobilizer mode and follow the on screen instructions.

>> Inspection End.

Power switch

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

M33

8

E17

66

Yes

Power switch

Ground

Continuity

Connector

Terminal

M33

8

No

Power switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

M33

8

M23

76

Yes

Power switch

Ground

Continuity

Connector

Terminal

M33

8

No

SEC-96

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B261E VEHICLE TYPE

B261E  VEHICLE TYPE

Description

INFOID:0000000010119284

There are two types of vehicle.

• EV/HEV

• Conventional

DTC Logic

INFOID:0000000010119285

DTC DETECTION LOGIC

NOTE:

• If DTC B261E is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-61, "DTC Logic"

.

• If DTC B261E is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-62, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn power switch ON.

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

YES

>> Go to 

SEC-96, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010119286

1.

INSPECTION START

1. Turn power switch ON.

2. Select “Self Diagnostic Result” of “BCM” using CONSULT.

3. Touch “ERASE”.

4. Perform DTC CONFIRMATION PROCEDURE for DTC B261E. Refer to 

SEC-96, "DTC Logic"

.

Is the DTC B261E detected again?

YES

>> GO TO 2.

NO

>> Inspection End.

2.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT. Refer to the CON-

SULT Immobilizer mode and follow the on screen instructions.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B261E

FUEL MIS CONFIG

Difference of BCM configuration

BCM

B26F7 BCM

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

B26F7 BCM

DTC Logic

INFOID:0000000010119287

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press door request switch.

2. Turn power switch ON.

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

YES

>> Go to 

SEC-97, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010119288

1.

INSPECTION START

1. Turn power switch ON.

2. Select “Self Diagnostic Result” of “BCM” using CONSULT.

3. Touch “ERASE”.

4. Perform DTC CONFIRMATION PROCEDURE for DTC B26F7. Refer to 

SEC-97, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 2.

NO

>> Inspection End.

2.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT. Refer to the CON-

SULT Immobilizer mode and follow the on screen instructions.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26F7

LF DRIVER COMMUNI-
CATION

Inside key antenna output circuit in BCM is malfunctioning. BCM