Nissan Pathfinder. Instruction - part 344

DLK-142

< DTC/CIRCUIT DIAGNOSIS >

B2427 ENCODER

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace automatic back door control module. Refer to 

DLK-321, "Removal and Installation"

.

4.

CHECK ENCODER POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect spindle unit RH connector.

3. Check voltage between spindle unit RH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK ENCODER CIRCUIT

1. Disconnect automatic back door control module connector.

2. Check continuity between automatic back door control module harness connector and spindle unit RH

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 ENCODER CIRCUIT 2

1. Disconnect automatic back door control module connector.

2. Check continuity between automatic back door control module harness connector and spindle unit RH

harness connector.

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

Monitor item

Condition

Status

SPINDLE RH ENCODER A

Back door

Moving (auto or manu-
al)

HI 

⇔ LO

When stopped

HI or LO

SPINDLE RH ENCODER B

Moving (auto or manu-
al)

HI 

⇔ LO

When stopped

HI or LO

(+)

(–)

Voltage

(Approx.)

Spindle unit RH

Connector

Terminal

B162

8

Ground

Battery voltage

Automatic back door control module

Spindle unit RH

Continuity 

 Connector

Terminal

 Connector

Terminal

B55

20

B162

8

Yes

Automatic back door control module

Ground

Continuity 

 Connector

Terminal

B55

20

No

Automatic back door control module

Spindle unit RH

Continuity 

 Connector

Terminal

 Connector

Terminal

B55

8

B162

3

Yes

9

10

B2427 ENCODER

DLK-143

< 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 harness.

7.

CHECK ENCODER CIRCUIT 3

1. Connect automatic back door control module spindle unit RH connector.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace automatic back door control module. Refer to 

DLK-321, "Removal and Installation"

.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace automatic back door control module. Refer to 

DLK-321, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning parts.

Automatic back door control module

Ground

Continuity 

 Connector

Terminal

B55

8

No

9

Automatic back door control module

Ground

Voltage

(Approx.)

 Connector

Terminal

B55

21

0 V

DLK-144

< DTC/CIRCUIT DIAGNOSIS >

B2428 AUTOMATIC BACK DOOR CONTROL UNIT

B2428 AUTOMATIC BACK DOOR CONTROL UNIT

DTC Logic

INFOID:0000000009175681

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009175682

1.

REPLACE AUTOMATIC BACK DOOR CONTROL MODULE

When DTC [B2428] is detected, replace automatic back door control module.

>> Replace automatic back door control module. Refer to 

DLK-321, "Removal and Installation"

.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2428

AUTO BACK DR 
CNT UNIT

Automatic back door control module detected CPU 
malfunction

Automatic back door control module

B242A CLOSURE CONDITION

DLK-145

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B242A CLOSURE CONDITION

DTC Logic

INFOID:0000000009175683

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Operate back door auto closure operation.

3. Check Self-Diagnostic Result mode of AUTOMATIC BACK DOOR CONTROL MODULE using CONSULT.
Is DTC detected?

YES

>> Refer to 

DLK-145, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009175684

Regarding Wiring Diagram information, refer to 

DLK-94, "Wiring Diagram"

.

1.

CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY

Check for entry of foreign materials in back door lock assembly.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Remove foreign materials.

2.

CHECK BACK DOOR OPEN/CLOSE OPERATION

Instructionly check open and close operation of back door.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts.

3.

CHECK MONITOR ITEM

1. Select AUTOMATIC BACK DOOR CONTROL MODULE using CONSULT.

2. Select HALF LATCH SW, OPEN SW and CLOSE SW in DATA MONITOR mode.

3. Check that the function operates normally according to the following conditions.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B242A

CLSR CONDITION

Automatic back door control module detects mal-
functions of open switch, close switch and half latch 
switch when auto closure of back door operates.

• Entry of foreign materials to back 

door lock assembly

• Back door mechanism
• Automatic back door control mod-

ule

• Open switch
• Close switch
• Half latch switch
• Harness or connectors