Nissan Quest E52. Manual - part 376

DLK-218

< DTC/CIRCUIT DIAGNOSIS >

B2420 CLOSE SWITCH

B2420 CLOSE SWITCH

DTC Logic

INFOID:0000000009649116

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON. 

2.

Operate automatic back door. 

3.

Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.

Is DTC detected?

YES

>> Refer to 

DLK-218, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649117

1.

CHECK AUTOMATIC BACK DOOR CONTROL MODULE OUTPUT 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 3.

NO

>> GO TO 2.

2.

CHECK CLOSE 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-495, "Removal and Installation"

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2420

CLOSE SW

When the automatic back door control unit detects 
any of the following condition
• The change of close switch cannot be detected 

for 3 second or more after starting the closure 
close output for the 3rd time in a row

• Close switch
• Harness or connectors

(Close switch circuit is open or 
shorted)

• Automatic back door control mod-

ule

(+)

(–)

Voltage

Back door lock assembly

Connector

Terminal

D190

5

Ground

9 - 16 V

Automatic back door control module

 Back door lock assembly

Continuity 

 Connector

Terminal

Connector

Terminal

B8

20

D190

5

Existed

Automatic back door control module

Ground

Continuity 

 Connector

Terminal

B8

20

Not existed

B2420 CLOSE SWITCH

DLK-219

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

NO

>> Repair or replace harness.

3.

CHECK CLOSE SWITCH GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK CLOSE SWITCH

Refer to 

DLK-219, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace back door lock assembly.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009649118

1.

CHECK CLOSE SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect back door lock assembly.

3.

Check continuity between back door lock assembly terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace back door lock assembly.

Back door lock assembly 

Ground

Continuity 

Connector

Terminal

D190

8

Existed

Back door lock assembly

Condition

Continuity

Terminal

5

8

Back door

Fully closed

Existed

Open/Half latch

Not existed

DLK-220

< DTC/CIRCUIT DIAGNOSIS >

B2421 CLUTCH OPERATION TIME

B2421 CLUTCH OPERATION TIME

DTC Logic

INFOID:0000000009649119

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON. 

2.

Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.

Is DTC detected?

YES

>> Refer to 

DLK-220, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649120

1.

CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check automatic back door control module power supply and ground circuit.
Refer to 

DLK-238, "AUTOMATIC BACK DOOR CONTROL MODULE : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace automatic back door control module. Refer to 

DLK-495, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning parts.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2421

CLUTCH TIME OUT

When the automatic back door control unit detects 
the power distribution to the clutch for 2 minutes or 
more

• Automatic back door control mod-

ule

• Battery voltage (low voltage)

B2422 BACK DOOR STATE

DLK-221

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B2422 BACK DOOR STATE

DTC Logic

INFOID:0000000009649121

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON. 

2.

Operate automatic back door. 

3.

Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.

Is DTC detected?

YES

>> Refer to 

DLK-221, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649122

1.

REPLACE AUTOMATIC BACK DOOR CONTROL MODULE

When DTC [B2422] is detected, replace automatic back door control module.

>> Replace automatic back door control module. Refer to 

DLK-495, "Removal and Installation"

.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2422

BACK DOOR STATE

When the automatic back door control unit detects 
back door position malfunction according to the 
pulse signal

• Back door mechanism
• Automatic back door control mod-

ule