Nissan Pathfinder. Manual - part 1062

B2602 SHIFT POSITION

SEC-111

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

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

YES

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

MWI-29, "DTC Index"

.

NO

>> GO TO 3.

3.

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

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

YES

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

BRC-42, "DTC Index"

.

NO

>> GO TO 6.

4.

CHECK CVT SHIFT SELECTOR CIRCUIT

1. Disconnect BCM connector and IPDM E/R connector.

2. Check continuity between CVT shift selector (park position switch) harness connector and BCM harness

connector.

3. Check continuity between CVT shift selector (park position switch) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK CVT SHIFT SELECTOR (PARK POSITION SWITCH)

Refer to 

SEC-111, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace CVT shift selector. Refer to 

TM-189, "Removal and Installation"

.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> Inspection End.

Component Inspection

INFOID:0000000009176028

1.

CHECK CVT SHIFT SELECTOR (PARK POSITION SWITCH)

1. Turn ignition switch OFF.

2. Disconnect CVT shift selector connector.

3. Check continuity between CVT shift selector (park position switch) terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace CVT shift selector. Refer to 

TM-189, "Removal and Installation"

.

CVT shift selector (park position switch)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M78

6

M18

20

Yes

CVT shift selector (park position switch)

Ground

Continuity

Connector

Terminal

M78

6

No

CVT shift selector (park position switch)

Condition

Continuity

Terminal

5

6

Selector  lever

P (Park) position

No

Other than above

Yes

SEC-112

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2603 SHIFT POSITION

B2603 SHIFT POSITION

DTC Logic

INFOID:0000000009176029

DTC DETECTION LOGIC

NOTE:

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

SEC-107, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE 1

1. Shift the selector lever to the P (Park) position.

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

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

YES

>> Go to 

SEC-112, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE 2

1. Shift the selector lever to any position other than P (Park) and wait 1 second or more.

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

YES

>> Go to 

SEC-112, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176030

Regarding Wiring Diagram information, refer to 

SEC-27, "Wiring Diagram"

.

1.

CHECK CVT SHIFT SELECTOR SWITCH FUNCTION

1. Turn ignition switch ON.

2. Select “DETE/CANCEL SW”  and "SFT PN/N SW" in DATA MONITOR mode with CONSULT.

3. Check “DETE/CANCEL SW” and "SFT PN/N SW" indication under the following conditions.

Is the inspection result normal?

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible causes

B2603

SHIFT POSI STATUS

BCM detects the following status when ignition 
switch is in the ON position.
• P (Park) position signal from TCM: approx. 0 

V

• CVT shift selector (park position switch) sig-

nal: approx. 0 V

• Harness or connector

[CVT shift selector (park position 
switch) circuit is open or shorted.]

• Harness or connectors

(TCM circuit is open or shorted.)

• CVT shift selector (park position 

switch)

• CVT  assembly  (TCM)
• BCM

Monitor item

Condition

Indication

DETE/CANCEL 
SW

CVT Shift se-
lector

In any position oth-
er than P (Park)

OFF

 P (Park)

ON

SFT PN/N SW

CVT Shift se-
lector

In any position oth-
er than P (Park)

OFF

 P (Park)

ON

B2603 SHIFT POSITION

SEC-113

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

YES

>> Refer to 

GI-49, "Intermittent Incident"

.

NO-1 >> If DETE/CANCEL SW is incorrect. GO TO 6.

NO-2 >> If SFT PN/N SW is incorrect. GO TO 2. 

2.

CHECK BCM INPUT SIGNAL

1. Turn ignition switch ON.

2. Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK BCM INPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Disconnect TCM connector.

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

5. Check continuity between TCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GOT TO 5.

4.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-80, "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 TCM

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

YES

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

TM-60, "DTC Index"

.

NO

>> Perform the trouble diagnosis related to the TCM power and ground circuits. Refer to 

TM-167,

"Diagnosis Procedure"

.

6.

CHECK CVT SHIFT SELECTOR POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect CVT shift selector (park position switch) connector.

3. Check voltage between CVT shift selector (park position switch) harness connector and ground.

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M18

39

Ground

Selector lever

P or N position

12

Other than above

0

TCM

BCM

Continuity

Connector

Terminal

Connector

Terminal

F15

20

M18

39

Yes

TCM

Ground

Continuity

Connector

Terminal

F15

20

No

SEC-114

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2603 SHIFT POSITION

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

7.

CHECK CVT SHIFT SELECTOR POWER SUPPLY CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between CVT shift selector (park position switch) harness connector and BCM harness

connector.

3. Check continuity between CVT shift selector (park position switch) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace harness.

8.

CHECK CVT SHIFT SELECTOR CIRCUIT

1. Disconnect BCM connector and IPDM E/R connector.

2. Check continuity between CVT shift selector (park position switch) harness connector and BCM harness

connector.

3. Check continuity between CVT shift selector (park position switch) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace harness.

9.

CHECK CVT SHIFT SELECTOR (PARK POSITION SWITCH)

Refer to 

SEC-115, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace CVT shift selector. Refer to 

TM-189, "Removal and Installation"

.

10.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-80, "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.

(+)

(–)

Voltage (V)

(Approx.)

CVT shift selector (park positionswitch)

Connector

Terminal

M78

5

Ground

12

CVT shift selector (park position switch)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M78

5

M19

69

Yes

CVT shift selector (park position switch)

Ground

Continuity

Connector

Terminal

M78

5

No

CVT shift selector (park position switch)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M78

6

M18

20

Yes

CVT shift selector (park position switch)

Ground

Continuity

Connector

Terminal

M78

6

No