Infiniti QX56 (Z62). Manual - part 422

DLK-154

< DTC/CIRCUIT DIAGNOSIS >

AUTOMATIC BACK DOOR SWITCH

AUTOMATIC BACK DOOR SWITCH

Component Function Check

INFOID:0000000006225977

1.

CHECK FUNCTION

1.

Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.

2.

Select “AUTO BD SW” in “DATA MONITOR” mode.

3.

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

Is the inspection result normal?

YES

>> Automatic back door switch is OK.

NO

>> Refer to 

DLK-154, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006225978

1.

CHECK AUTOMATIC BACK DOOR SWITCH INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect automatic back door switch connector.

3.

Check voltage between automatic back door switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK AUTOMATIC BACK DOOR SWITCH CIRCUIT

1.

Disconnect automatic back door control module connector.

2.

Check continuity between automatic back door control module harness connector and automatic back
door switch 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-262, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK AUTOMATIC BACK DOOR SWITCH GROUND CIRCUIT

Check continuity between automatic back door switch harness connector and ground.

Monitor item

Condition

Status

 AUTO BD SW 

Automatic back door switch

Pressed

ON

Released

OFF

(+)

(–)

Voltage

(Approx.)

Automatic back door switch

Connector

Terminal

M127

1

Ground

Battery voltage

Automatic back door control module

Automatic back door switch

Continuity 

 Connector

Terminal

Connector

Terminal

B26

2

M127

1

Existed

Automatic back door control module

Ground

Continuity 

 Connector

Terminal

B26

2

Not existed

AUTOMATIC BACK DOOR SWITCH

DLK-155

< 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 4.

NO

>> Repair or replace harness.

4.

CHECK AUTOMATIC BACK DOOR SWITCH

Refer to 

DLK-155, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace automatic back door switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006225979

1.

CHECK AUTOMATIC BACK DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect automatic back door switch connector.

3.

Check continuity between automatic back door switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace automatic back door switch.

Automatic back door switch

Ground

Continuity 

Connector

Terminal

M127

3

Existed

Automatic back door switch

Condition

Continuity 

Terminal

1

3

Automatic back door switch

Pressed

Existed

Released

Not existed

DLK-156

< DTC/CIRCUIT DIAGNOSIS >

HALF LATCH SWITCH

HALF LATCH SWITCH

Component Function Check

INFOID:0000000006225980

1.

CHECK FUNCTION

1.

Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.

2.

Select “HALF LATCH SW” in “DATA MONITOR” mode.

3.

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

Is the inspection result normal?

YES

>> Half latch switch is OK.

NO

>> Refer to 

DLK-156, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006225981

1.

CHECK HALF LATCH 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 3.

NO

>> GO TO 2.

2.

CHECK HALF LATCH SWITCH CIRCUIT

1.

Disconnect automatic back door control module connector.

2.

Check continuity between automatic back door control module 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-262, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK HALF LATCH 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

(–)

(–)

Voltage

(Approx.)

Back door lock assembly

Connector

Terminal

D157

6

Ground

Battery voltage

Automatic back door control module

Back door lock assembly

Continuity 

 Connector

Terminal

 Connector

Terminal

B26

8

D157

6

Existed

Automatic back door control module

Ground

Continuity 

 Connector

Terminal

B26

8

Not existed

Back door lock assembly

Ground

Continuity 

 Connector

Terminal

D157

8

Existed

HALF LATCH SWITCH

DLK-157

< 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 4.

NO

>> Repair or replace harness.

4.

CHECK HALF LATCH SWITCH

Refer to 

DLK-157, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace back door lock assembly.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006225982

COMPONENT INSPECTION

1.

CHECK HALF LATCH 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.

Back door lock assembly

Condition

Continuity

Terminal

6

8

Back door

Open

Existed

Fully closed/Half 
latch

Not existed