Nissan Leaf. Manual - part 1081

SEC-86

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2602 SHIFT POSITION

B2602 SHIFT POSITION

DTC Logic

INFOID:0000000010119274

DTC DETECTION LOGIC

NOTE:

• If DTC B2602 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-61, "DTC Logic"

.

• If DTC B2602 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. Set vehicle to READY.

2. Drive vehicle at a speed of 4 km/h (2.5 MPH) or more for 10 seconds or more.

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

YES

>> Go to 

SEC-86, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010119275

Regarding Wiring Diagram information, refer to 

SEC-42, "Wiring Diagram"

.

1.

CHECK DTC OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

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

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

BRC-56, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK DTC OF COMBINATION METER

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

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

MWI-65, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK DTC OF VCM

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

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

TM-50, "DTC Index"

.

NO

>> GO TO 4.

4.

CHECK P POSITION SIGNAL CIRCUIT

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2602

SHIFT P DIAG

BCM detects the following status for 10 seconds.
• Electric shift selector is in the P position
• Vehicle speed is 4 km/h (2.5 MPH) or more
• Power switch is in the ON position

• Harness or connectors

(CAN communication line is open or 
shorted.)

• Harness or connectors

(VCM circuit is open or shorted.)

• VCM
• ABS actuator and electric unit (con-

trol unit)

• Combination meter
• BCM

B2602 SHIFT POSITION

SEC-87

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

1. Turn power switch OFF.

2. Disconnect BCM connector.

3. Disconnect VCM connector.

4. Check continuity between BCM harness connector and VCM harness connector.

5. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

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.

BCM

VCM

Continuity

Connector

Terminal

Connector

Terminal

M24

37

E61

48

Yes

BCM

Ground

Continuity

Connector

Terminal

M24

37

No

SEC-88

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2603 SHIFT POSITION

B2603 SHIFT POSITION

DTC Logic

INFOID:0000000010119276

DTC DETECTION LOGIC

NOTE:

• If DTC B2603 is displayed with DTC B2601, first perform the trouble diagnosis for DTC B2601. Refer to

SEC-84, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE 1

1. Turn power switch ON.

2. Operate electric shift selector to change shift position to P, and wait 1 second or more.

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

YES

>> Go to 

SEC-88, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE 2

1. Operate electric shift selector to change shift position to any position other than P, and wait 1 second or

more.

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

YES

>> Go to 

SEC-88, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010119277

Regarding Wiring Diagram information, refer to 

SEC-42, "Wiring Diagram"

.

1.

INSPECTION START

Perform inspection in accordance with the procedure that confirms DTC.
Which procedure confirms DTC?

DTC confirmation procedure 1>>GO TO 2.

DTC confirmation procedure 2>>GO TO 5.

2.

CHECK DTC OF VCM

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

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

TM-50, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK P/N POSITION SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect BCM connector.

3. Disconnect VCM connector.

4. Check continuity between BCM harness connector and VCM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible causes

B2603

SHIFT POSITION 

BCM detects the following status.
• P position signal from VCM: approx. 0 V (P 

position)

• P/N position signal from VCM: approx. 0 V 

(Other than P/N position)

• Harness or connector

(VCM circuit is open or shorted.)

• VCM
• BCM

B2603 SHIFT POSITION

SEC-89

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

5. Check continuity between BCM 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-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.

5.

CHECK DTC OF VCM

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

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

TM-50, "DTC Index"

.

NO

>> GO TO 6.

6.

CHECK P POSITION SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect BCM connector.

3. Disconnect VCM connector.

4. Check continuity between BCM harness connector and VCM harness connector.

5. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

7.

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.

BCM

VCM

Continuity

Connector

Terminal

Connector

Terminal

M23

102

E61

47

Yes

BCM

Ground

Continuity

Connector

Terminal

M23

102

No

BCM

VCM

Continuity

Connector

Terminal

Connector

Terminal

M24

37

E61

48

Yes

BCM

Ground

Continuity

Connector

Terminal

M24

37

No