Nissan Pathfinder. Manual — part 345

DLK-146

< DTC/CIRCUIT DIAGNOSIS >

B242A CLOSURE CONDITION

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 4.

4.

CHECK SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.

2. Disconnect back door lock assembly connector.

3. Check voltage between back door lock assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK SWITCH CIRCUIT

1. Disconnect automatic back door control module connector.

2. Check continuity between automatic back door control module harness connector and back door lock

assembly harness connector.

3. Check continuity between automatic back door control module harness connector and ground.

Is the inspection result normal?

YES

>> Replace automatic back door control module. Refer to

DLK-321, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK SWITCH GROUND CIRCUIT

Check continuity between back door lock assembly harness connector and ground.

Monitor item

Condition

Status

HALF LATCH SW

Back door

Fully closed/Half latch

OFF

Open

ON

OPEN SW

Fully closed/Half latch

OFF

Open

ON

CLOSE SW

Open/Half latch

OFF

Fully closed

ON

(+)

(–)

Voltage

(Approx.)

Back door lock assembly

Connector

Terminal

D557

4

Ground

Battery voltage

5

6

Automatic back door control module

Back door lock assembly

Continuity

Connector

Terminal

Connector

Terminal

B55

3

D557

6

Yes

5

5

11

4

Automatic back door control module

Ground

Continuity

Connector

Terminal

B55

3

No

5

11

B242A CLOSURE CONDITION

DLK-147

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace back door lock assembly ground circuit.

7.

CHECK SWITCH

Refer to

DLK-120, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace back door lock assembly. Refer to

DLK-308, "DOOR LOCK : Removal and Installation"

.

8.

CHECK INTERMITTENT INCIDENT

Refer to

GI-49, "Intermittent Incident"

.

>> Inspection End.

Component Inspection

INFOID:0000000009175685

COMPONENT INSPECTION

1.

CHECK SWITCH

1. Turn ignition switch OFF.

2. Disconnect back door lock assembly connector.

3. Check continuity between back door lock assembly terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace back door lock assembly. Refer to

DLK-308, "DOOR LOCK : Removal and Installation"

.

Back door lock assembly

Ground

Continuity

Connector

Terminal

D557

8

Yes

Back door lock assembly

Condition

Continuity

Terminal

4

8

Back door lock

Open

Yes

Fully closed/Half latch

No

5

Fully close

Yes

Open/Half latch

No

6

Open

Yes

Fully closed/Half latch

No

7

Back door
switch

On

Yes

Off

No

DLK-148

< DTC/CIRCUIT DIAGNOSIS >

B261B REMOTE ENGINE START

B261B REMOTE ENGINE START

DTC Logic

INFOID:0000000009175686

DTC DETECTION LOGIC

NOTE:

• If DTC B261B is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B261B is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-69, "DTC Logic"

.

Diagnosis Procedure

INFOID:0000000009175687

1.

CHECK ECM IGNITION, POWER AND GROUND CIRCUITS

Check ECM ignition power and ground circuits. Refer to

EC-173, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace ECM. Refer to

EC-466, "Removal and Installation"

. GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

INSPECTION

1. Turn ignition switch ON.

2. Select "Self-diagnostic result" mode with CONSULT.

3. Touch "ERASE".

4. Perform vehicle remote start operation.
Does DTC B261B return?

YES

>> Replace BCM. Refer to

BCS-80, "Removal and Installation"

.

NO

>> Inspection End..

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B261B

BCM

The BCM has requested ignition OFF but ECM
keeps the engine running for more than 10 seconds
after the OFF request was made.

• ECM

B2621 INSIDE ANTENNA

DLK-149

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B2621 INSIDE ANTENNA

DTC Logic

INFOID:0000000009175688

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Select “INTELLIGENT KEY” of “BCM” using CONSULT.

2. Select “INSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode.

3. Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “WORK SUPPORT” of “INTELLIGENT

KEY”.

4. Check BCM for DTC.
Is inside key antenna DTC detected?

YES

>> Refer to

DLK-149, "Diagnosis Procedure"

.

NO

>> Inside key antenna (instrument center) is OK.

Diagnosis Procedure

INFOID:0000000009175689

Regarding Wiring Diagram information, refer to

DLK-74, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch OFF.

2. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to

BCS-80, "Removal and Installation"

.

DTC

CONSULT display

description

DTC detecting condition

Possible cause

B2621

INSIDE ANTENNA

An excessive high or low voltage from inside anten-
na (instrument center) is sent to BCM.

• Inside key antenna (instrument

center)

• Harness or connector

[Inside key antenna (instrument
center) circuit is open or shorted]

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M80

123, 124

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the
antenna detection area

JMKIA3839GB

JMKIA5951GB