Infiniti QX56 (Z62). Manual — part 405

DLK-86

< DTC/CIRCUIT DIAGNOSIS >

B2409 HALF LATCH SWITCH

B2409 HALF LATCH SWITCH

DTC Logic

INFOID:0000000006225882

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.

Is DTC detected?

YES

>> Refer to

DLK-86, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225883

1.

CHECK HALF LATCH SWITCH SIGNAL

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

>> GO TO 6.

NO

>> GO TO 2.

2.

CHECK HALF LATCH 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 4.

NO

>> GO TO 3.

3.

CHECK HALF LATCH 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.

DTC

CONSULT-III display

description

DTC detecting condition

Possible cause

B2409

HALF LATCH SW

When the automatic back door control unit can not
detects the half latch switch ON condition even
when the back door is in the open position

• Half latch switch
• Harness or connectors

(Half latch switch circuit is open)

• Automatic back door control mod-

ule

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

B2409 HALF LATCH SWITCH

DLK-87

< 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

>> Replace automatic back door control module. Refer to

DLK-262, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK HALF LATCH SWITCH GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK HALF LATCH SWITCH

Refer to

DLK-87, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace back door lock assembly.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006225884

COMPONENT INSPECTION

1.

CHECK HALF LATCH 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.

Automatic back door control module

Back door lock assembly

Continuity

Connector

Terminal

Connector

Terminal

B26

8

D157

6

Existed

Back door lock assembly

Ground

Continuity

Connector

Terminal

D157

8

Existed

Back door lock assembly

Condition

Continuity

Terminal

6

8

Back door lock

Open

Existed

Fully closed/Half latch

Not existed

DLK-88

< DTC/CIRCUIT DIAGNOSIS >

B2416 TOUCH SENSOR RH

B2416 TOUCH SENSOR RH

DTC Logic

INFOID:0000000006225885

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.

Is DTC detected?

YES

>> Refer to

DLK-88, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225886

1.

CHECK HALF LATCH SWITCH SIGNAL

1.

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

2.

Select “TOUCH SEN RH” in “DATA MONITOR” mode.

3.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 2.

2.

CHECK TOUCH SENSOR INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect touch sensor RH connector.

3.

Check voltage between touch sensor RH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK TOUCH SENSOR RH CIRCUIT

1.

Disconnect automatic back door control module connector.

2.

Check continuity between automatic back door control module harness connector and touch sensor RH
harness connector.

DTC

CONSULT-III display

description

DTC detecting condition

Possible cause

B2416

TOUCH SEN R
OPEN

When the automatic back door control unit detects
the open circuit of the touch sensor RH

• Touch sensor RH
• Harness or connectors

(Touch sensor RH circuit is open)

• Automatic back door control mod-

ule

Monitor item

Condition

Status

TOUCH SEN RH

Touch sensor RH

Other than below

OFF

Detect obstruction

ON

(+)

(–)

Voltage

(Approx.)

Touch sensor RH

Connector

Terminal

D108

1

Ground

6 V

B2416 TOUCH SENSOR RH

DLK-89

< 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

>> Replace automatic back door control module. Refer to

DLK-262, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK TOUCH SENSOR RH GROUND CIRCUIT

1.

Disconnect automatic back door control module and touch sensor LH connectors.

2.

Check continuity between automatic back door control module harness connector and touch sensor RH
harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK TOUCH SENSOR RH

Refer to

DLK-89, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace touch sensor RH.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006225887

1.

CHECK TOUCH SENSOR RH

1.

Turn ignition switch OFF.

2.

Disconnect touch sensor RH connector.

3.

Check resistance between touch sensor RH terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace touch sensor RH.

Automatic back door control module

Touch sensor RH

Continuity

Connector

Terminal

Connector

Terminal

B26

16

D108

1

Existed

Automatic back door control module

Touch sensor RH

Continuity

Connector

Terminal

Connector

Terminal

B26

15

D108

2

Existed

Touch sensor RH

Condition

Resistance

(Approx.)

Terminal

1

2

Touch sensor RH

Detect obstruction

120

Ω

or less

Other than above

1 k

Ω

±

10%