Nissan Pathfinder. Manual - part 1066

B261E VEHICLE TYPE

SEC-127

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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4.

CONFIRM ECM PART NUMBER.

Confirm the part number of the installed ECM is correct. 
Is the ECM part number correct?

YES

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.

NO

>> Replace ECM. Refer to 

EC-466, "Removal and Installation"

.

SEC-128

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B26F3 STARTER CONTROL RELAY

B26F3 STARTER CONTROL RELAY

DTC Logic

INFOID:0000000009176044

DTC DETECTION LOGIC

NOTE:

• If DTC B26F3 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B26F3 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. Press push-button ignition switch under the following conditions to start engine:

-

Shift selector lever: In the P (Park) position

-

Brake pedal: Depressed

2. Wait 2 seconds after engine started.

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

YES

>> GO TO  

SEC-128, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176045

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 diagnosis procedure related to the detected DTC. Refer to 

PCS-20, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26F3

START CONT RLY ON

BCM requests IPDM E/R to turn starter 
control relay OFF, but BCM cannot receive 
starter control relay OFF state signal from 
IPDM E/R (CAN).

• Harness or connectors 

(CAN communication line is open or 
shorted.)

• IPDM E/R

B26F4 STARTER CONTROL RELAY

SEC-129

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

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SEC

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B26F4 STARTER CONTROL RELAY

DTC Logic

INFOID:0000000009176046

DTC DETECTION LOGIC

NOTE:

• If DTC B26F4 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B26F4 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. Press push-button ignition switch under the following conditions to start engine, and wait 1 second or

more.

-

Shift selector lever: In the P (Park) position

-

Brake pedal: Depressed

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

YES

>> GO TO  

SEC-129, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176047

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 diagnosis procedure related to the detected DTC. Refer to 

PCS-20, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26F4

START CONT RELAY 
OFF

BCM requests IPDM E/R to turn starter control 
relay ON, but BCM cannot receive starter control 
relay ON state signal from IPDM E/R.

• Harness or connectors 

(CAN communication line is open 
or shorted.)

• IPDM E/R

SEC-130

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B26F7 BCM

B26F7 BCM

DTC Logic

INFOID:0000000009176048

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press door request switch.

2. Turn ignition switch ON.

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

YES

>> GO TO  

SEC-130, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176049

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 B26F7. Refer to 

SEC-130, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 2.

NO

>> Inspection End.

2.

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B26F7

BCM

Inside key antenna output circuit in BCM is malfunctioning. BCM