Nissan Pathfinder. Manual - part 1060

B2556 PUSH-BUTTON IGNITION SWITCH

SEC-103

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2556 PUSH-BUTTON IGNITION SWITCH

DTC Logic

INFOID:0000000009176015

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press push-button ignition switch under the following condition:

-

Brake pedal: Not depressed

2. Release push-button ignition switch and wait 100 seconds or more. 

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

YES

>> GO TO  

SEC-103, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176016

Regarding Wiring Diagram information, refer to 

SEC-27, "Wiring Diagram"

.

1.

CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.

2. Disconnect push-button ignition switch connector.

3. Check voltage between push-button ignition switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

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

2. Check continuity between push-button ignition switch harness connector and BCM harness connector.

3. Check continuity between push-button ignition switch harness connector and ground.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2556

PUSH-BTN IGN SW

BCM detects the push-button ignition switch 
stuck at ON for 100 seconds or more.

• Harness or connectors

(Push-button ignition switch circuit is 
shorted.)

• Push-button ignition switch
• BCM

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M17

8

Ground

12

Push-button ignition switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

M17

8

M18

1

Yes

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M17

8

No

SEC-104

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2556 PUSH-BUTTON IGNITION SWITCH

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

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.

4.

CHECK PUSH-BUTTON IGNITION SWITCH

Refer to 

SEC-104, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace push-button ignition switch. Refer to 

SEC-145, "Removal and Installation"

.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> Inspection End.

Component Inspection

INFOID:0000000009176017

1.

CHECK PUSH-BUTTON IGNITION SWITCH

1. Turn ignition switch OFF.

2. Disconnect push-button ignition switch connector.

3. Check continuity between push-button ignition switch terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace push-button ignition switch. Refer to 

SEC-145, "Removal and Installation"

.

Push-button ignition switch

Condition

Continuity

Terminal

4

8

Push-button ignition 
switch

Pressed

Yes

Not pressed

No

B2557 VEHICLE SPEED

SEC-105

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2557 VEHICLE SPEED

DTC Logic

INFOID:0000000009176018

DTC DETECTION LOGIC

NOTE:

• If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B2557 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-69, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and wait 10 seconds or more.

2. Drive the vehicle at a vehicle speed of 10 km/h (6.2 MPH) or more for 10 seconds or more.

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

YES

>> GO TO  

SEC-105, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176019

1.

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 2.

2.

CHECK DTC OF “COMBINATION METER”

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 INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

 .

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible causes

B2557

VEHICLE SPEED

BCM detects one of the following conditions for 10 
seconds continuously.
• Vehicle speed signal from combination meter is 10 

km/h (6.2 MPH) or more, and vehicle speed signal 
from ABS actuator and electric unit (control unit) is 
4 km/h (2.5 MPH) or less.

• Vehicle speed signal from combination meter is 4 

km/h (2.5 MPH) or less, and vehicle speed signal 
from ABS actuator and electric unit (control unit) is 
10 km/h (6.2 MPH) or more.

• Harness or connectors

(The CAN communication line is 
open or shorted.)

• Combination meter
• ABS actuator and electric unit 

(control unit)

SEC-106

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2560 STARTER CONTROL RELAY

B2560 STARTER CONTROL RELAY

Description

INFOID:0000000009176020

Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N (Neutral) or P (Park)

position.

DTC Logic

INFOID:0000000009176021

DTC DETECTION LOGIC

NOTE:

• If DTC B2560 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B2560 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-69, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON under the following conditions and wait for at least 2 seconds:

-

CVT selector lever is in the P (Park) position.

-

Depress the brake pedal.

2. Check “Self-Diagnostic Result” with CONSULT.
Is DTC detected?

YES

>> Refer to 

SEC-106, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176022

1.

CHECK DTC WITH IPDM E/R

Check “Self Diagnostic Result” with CONSULT. Refer to 

PCS-20, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> Inspection End.

DTC

Self-diagnosis name

DTC detecting condition

Possible causes

B2560

STARTER CONTROL 
RELAY

BCM detects a mismatch between the OFF re-
quest of starter control relay to IPDM E/R and the 
feedback. (The feedback is ON instead of OFF.)

• IPDM  E/R