Nissan Quest E52. Manual - part 1100

SEC-90

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2608 STARTER RELAY

B2608 STARTER RELAY

DTC Logic

INFOID:0000000009650750

DTC DETECTION LOGIC

NOTE:
• If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-87, "DTC Logic"

.

• If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-88, "DTC Logic"

.

• If DTC B2608 is displayed with DTC B210D (IPDM E/R), first perform the trouble diagnosis for DTC B210D.

Refer to 

SEC-111, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Press push-button ignition switch under the following conditions to start engine.

-

Selector lever: In the P position

-

Brake pedal: Depressed

2.

Wait 1 second after engine started.

3.

Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT.

Is DTC detected?

YES

>> Go to 

SEC-90, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009650751

1.

CHECK DTC OF IPDM E/R

Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT.
Is DTC detected?

YES

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

PCS-24, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK STARTER RELAY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Disconnect BCM connector.

4.

Check continuity between IPDM E/R harness connector and BCM harness connector.

5.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2608

STARTER RELAY

BCM outputs starter relay OFF signal but 
BCM receives starter relay ON signal from 
IPDM E/R (CAN).

• Harness or connectors 

(CAN communication line is open or 
shorted.)

• Harness or connectors 

(Starter relay circuit is open or shorted.)

• IPDM E/R

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E11

46

M124

97

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E11

46

Not existed

B2608 STARTER RELAY

SEC-91

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

REPLACE IPDM E/R

1.

Replace IPDM E/R. Refer to 

PCS-36, "Removal and Installation"

.

2.

Perform DTC CONFIRMATION PROCEDURE for DTC B2608. Refer to 

SEC-90, "DTC Logic"

.

Is DTC B2608 detected again?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

REPLACE BCM

1.

Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

2.

Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

>> INSPECTION END

SEC-92

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B260F ENGINE STATUS

B260F ENGINE STATUS

Description

INFOID:0000000009650752

BCM receives the engine status signal from ECM via CAN communication.

DTC Logic

INFOID:0000000009650753

DTC DETECTION LOGIC

NOTE:
• If DTC B260F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-87, "DTC Logic"

.

• If DTC B260F is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-88, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait 2 seconds or more.

2.

Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT.

Is DTC detected?

YES

>> Go to 

SEC-92, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009650754

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “BCM” using CONSULT.

3.

Touch “ERASE”.

4.

Perform DTC CONFIRMATION PROCEDURE for DTC B260F. Refer to 

SEC-92, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE ECM

Replace ECM.
Refer to 

EC-460, "Removal and Installation"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B260F

ENG STATE SIG LOST

BCM has not yet received the engine status 
signal from ECM when ignition switch is in 
the ON position.

• Harness or connectors 

(CAN communication line is open or 
shorted.)

• ECM

B261A PUSH-BUTTON IGNITION SWITCH

SEC-93

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B261A PUSH-BUTTON IGNITION SWITCH

DTC Logic

INFOID:0000000009650755

DTC DETECTION LOGIC

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

BCS-87, "DTC Logic"

.

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

BCS-88, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

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

-

Selector lever: In the P position

-

Brake pedal: Not depressed

2.

Release push-button ignition switch and wait 1 second.

3.

Check DTC in “Self diagnostic result” mode of “BCM” using CONSULT.

Is DTC detected?

YES

>> Go to 

SEC-93, "Diagnosis Procedure"

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009650756

1.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 1

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector.

3.

Disconnect IPDM E/R connector.

4.

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

5.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2

1.

Disconnect BCM connector.

2.

Check continuity between push-button ignition switch harness connector and BCM harness 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
• Push-button ignition switch operation condition 

judged by push switch signal

• Push-button ignition switch status signal from 

IPDM E/R (CAN)

• Harness or connectors

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

• IPDM  E/R
• BCM

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