Nissan Murano Z51. Manual - part 1262

B261A PUSH-BUTTON IGNITION SWITCH

SEC-95

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

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SEC

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B261A PUSH-BUTTON IGNITION SWITCH

Description

INFOID:0000000005515585

BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via
the CAN communication. IPDM E/R transmits the power supply position status via CAN communication to
BCM.

DTC Logic

INFOID:0000000005515586

DTC DETECTION LOGIC

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

SEC-32, "BCM : DTC Logic"

.

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

SEC-34, "BCM : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE 1

1.

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

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-95, "Diagnosis Procedure"

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE 2

1.

Insert Intelligent Key into the key slot.

2.

Press the push-button ignition switch under the following conditions and wait for at least 1 second.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

3.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-95, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005515587

1.

INSPECTION START

Perform inspection in accordance with procedure that confirms DTC.

Which procedure confirms DTC?

DTC confirmation procedure 1>>GO TO 2.
DTC confirmation procedure 2>>GO TO 4.

2.

CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector and IPDM E/R connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B261A

PUSH-BTN IGN 
SW

BCM detects the mismatch between the following for 
1 second or more
• Power supply position with push-button ignition 

switch

• Power supply position from IPDM E/R (CAN)

• Harness or connectors

(Push-button ignition switch circuit is 
open or shorted)

• Between BCM and push-button igni-

tion switch

• Between IPDM E/R and push-button 

ignition switch

SEC-96

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B261A PUSH-BUTTON IGNITION SWITCH

3.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 3.

3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 1

1.

Disconnect BCM 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.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

4.

CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 2

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector and BCM connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2

1.

Disconnect IPDM E/R connector.

2.

Check continuity between push-button ignition switch harness connector and IPDM E/R harness connec-
tor.

3.

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

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M101

4

Ground

Battery voltage

Push-button ignition switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

M101

4

M122

89

Existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M101

4

Not existed

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M101

4

Ground

Battery voltage

Push-button ignition switch

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

M101

4

E10

28

Existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M101

4

Not existed

B261A PUSH-BUTTON IGNITION SWITCH

SEC-97

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

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B

SEC

N

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P

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

SEC-98

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B261E VEHICLE TYPE

B261E  VEHICLE TYPE

Description

INFOID:0000000005515588

There are two types of vehicle.
• HEV
• Conventional

DTC Logic

INFOID:0000000005515589

DTC DETECTION LOGIC

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

SEC-32, "BCM : DTC Logic"

.

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

SEC-34, "BCM : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-98, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005515590

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Touch “ERASE”.

4.

Perform DTC Confirmation Procedure.
See 

SEC-98, "DTC Logic"

.

Is the 1st trip DTC B261E displayed again?

YES

>> Replace BCM. Refer to 

BCS-95, "Removal and Installation"

.

NO

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B261E

VEHICLE TYPE

Difference of BCM configuration

BCM