Nissan Quest E52. Manual - part 1103

SEC-102

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B26FA CRANKING REQUEST CIRCUIT

5.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

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.

3.

Perform DTC CONFIRMATION PROCEDURE for DTC B26FA. Refer to 

SEC-101, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

REPLACE ECM

Replace ECM.
Refer to 

EC-460, "Removal and Installation"

.

>> INSPECTION END

BCM

ECM

Continuity

Connector

Terminal

Connector

Terminal

M123

64

F7

8

Existed

BCM

Ground

Continuity

Connector

Terminal

M123

64

Not existed

B26FC KEY REGISTRATION

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

B26FC KEY REGISTRATION

DTC Logic

INFOID:0000000009650769

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

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

2.

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:0000000009650770

1.

REPLACE INTELLIGENT KEY

1.

Prepare Intelligent Key that matches the vehicle.

2.

Perform initialization of BCM and registration of Intelligent Key using CONSULT.

3.

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

Is DTC detected?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26FC

KEY REGISTRATION

Intelligent Key that does not match the vehicle is 
registered.

• Improper registration operation
• Intelligent Key
• BCM

SEC-104

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B209F CRANKING REQUEST CIRCUIT

B209F CRANKING REQUEST CIRCUIT

DTC Logic

INFOID:0000000009650771

DTC DETECTION LOGIC

NOTE:
If DTC B209F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

PCS-

30, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Perform DTC CONFIRMATION PROCEDURE for DTC P1650. Refer to 

EC-374, "DTC Logic"

.

2.

Turn ignition switch ON.

3.

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

Is DTC detected?

YES

>> Refer to 

SEC-104, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009650772

1.

CHECK CRANKING REQUEST SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between IPDM E/R harness connector and ground under the following conditions.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK CRANKING REQUEST SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Disconnect ECM connector.

4.

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B209F

STR CUT OFF OPEN 

When the following items do not match, a 
malfunction is detected.
• Cranking request signal from ECM
• Starter control relay control signal from 

ECM (CAN)

• Harness or connectors

(CAN communication line is open or 
shorted.)

• Harness or connectors

(Cranking request signal circuit is open 
or shorted.)

• IPDM E/R
• ECM

(+)

(–)

Condition

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

F12

71

Ground

Ignition switch OFF

3.6

Ignition switch ON

• Engine: Stopped
• Selector lever position: P

0 - 1

• Engine: Stopped
• Selector lever position: 

Other than P

9 - 16

Engine running

9 -16

B209F CRANKING REQUEST CIRCUIT

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

5.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

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 B209F. Refer to 

SEC-104, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

REPLACE ECM

Replace ECM.
Refer to 

EC-460, "Removal and Installation"

.

>> INSPECTION END

IPDM E/R

ECM

Continuity

Connector

Terminal

Connector

Terminal

F12

71

F7

8

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

F12

71

Not existed