Nissan Altima L32. Manual - part 1283

SEC-282

< COMPONENT DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

B2603 SHIFT POSITION STATUS

2. Check continuity between BCM harness connector M19 (A) ter-

minal 87 and CVT device (park position switch) harness connec-

tor M23 (B) terminal 9.

3. Check continuity between BCM harness connector M19 (A) ter-

minal 87 and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair harness or connector.

6.

CHECK CVT DEVICE

Refer to 

SEC-277, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7

NO

>> Replace CVT device. Refer to 

TM-255, "Removal and Installation"

 (RE0F09B) or 

TM-431,

"Removal and Installation"

 (RE0F10A).

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> Inspection End.

BCM

CVT device

(park position switch)

Continuity

Connector

Terminal

Connector

Terminal

A: M19

87

B: M23

9

Yes

BCM

Ground

Continuity

Connector

Terminal

A: M19

87

Ground

No

ALKIA0446ZZ

B2604 PNP SWITCH

SEC-283

< COMPONENT DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2604 PNP SWITCH

Description

INFOID:0000000004206237

BCM confirms the shift position with the following 4 signals.

• CVT selector lever

• P/N position switch

• P position signal from IPDM E/R (CAN)

• P position signal from TCM (CAN)

DTC Logic

INFOID:0000000004206238

DTC DETECTION LOGIC

NOTE:

• If DTC B2604 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-235, "DTC Logic"

.

• If DTC B2604 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-236, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine under the following conditions and wait for at least 1 second.

-

CVT selector lever is in the P position

-

Do not depress the brake pedal

2. Use CVT selector lever to select each gear one at a time. Wait at each gear for at least 1 second.

3. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?

YES

>> Refer to 

SEC-283, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004206239

1.

CHECK DTC WITH TCM

Check “Self diagnostic result” with CONSULT-III. Refer to 

TM-221, "DTC Index"

 (RE0F09B) or 

TM-399, "DTC

Index"

 (RE0F10A).

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace malfunctioning parts.

2.

CHECK PNP SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM harness connector and BCM harness connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2604

PNP SWITCH

BCM detects the following status for 500 ms or more 
when the ignition switch is in the ON position.
• P/N switch indicates vehicle is in P or N shift posi-

tion. Signal from TCM indicates vehicle is in forward 
or reverse gear.

• P/N switch indicates vehicle is in forward or reverse 

gear. Signal from TCM indicates vehicle is in P or N.

• Harness or connectors 

[The park/neutral position (PNP) 
switch circuit is open or shorted.] 

• Park/ neutral position (PNP) switch
• TCM

SEC-284

< COMPONENT DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

B2604 PNP SWITCH

3. Check continuity between TCM harness connector and BCM

harness connector.

4. Check continuity between TCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> Inspection End.

TCM

BCM

Continuity

Connector

Terminal

Connector

Terminal

A:  F16

20

B:  M18

48

Yes

TCM

Ground

Continuity

Connector

Terminal

A: F16

20

Ground

No

ALKIA1317ZZ

B2605 PNP SWITCH

SEC-285

< COMPONENT DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2605 PNP SWITCH

Description

INFOID:0000000004206240

BCM confirms the shift position with the following 4 signals.

• CVT selector lever

• P/N position switch

• P position signal from IPDM E/R (CAN)

• P position signal from TCM (CAN)

DTC Logic

INFOID:0000000004206241

DTC DETECTION LOGIC

NOTE:

• If DTC B2605 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-235, "DTC Logic"

.

• If DTC B2605 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-236, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON under the following conditions and wait for at least 1 second.

-

CVT selector lever is in the P or N position

-

Do not depress the brake pedal.

2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?

YES

>> Refer to 

SEC-285, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004206242

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT-III. Refer to 

PCS-45, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace malfunctioning parts.

2.

CHECK PNP SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM harness connector and BCM harness connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2605

PNP SWITCH

BCM detects the following status for 500 ms or 
more when the ignition switch is in ON position
• N position input signal exists. Shift position signal 

from IPDM E/R does not exist.

• N position input signal does not exist. Shift posi-

tion signal from IPDM E/R exists.

• Harness or connectors

[The park/neutral position (PNP) 
switch circuit is open or shorted.]

• Park/neutral position (PNP) switch
• IPDM  E/R