Infiniti QX56 (Z62). Manual - part 406

DLK-90

< DTC/CIRCUIT DIAGNOSIS >

B2417 TOUCH SENSOR LH

B2417 TOUCH SENSOR LH

DTC Logic

INFOID:0000000006225888

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-90, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225889

1.

CHECK HALF LATCH SWITCH SIGNAL

1.

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

2.

Select “TOUCH SEN LH” 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 LH connector.

3.

Check voltage between touch sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK TOUCH SENSOR LH CIRCUIT

1.

Disconnect automatic back door control module.

2.

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

DTC

CONSULT-III display 

description

DTC detecting condition

Possible cause

B2417

TOUCH SEN L 
OPEN

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

• Touch sensor LH
• Harness or connectors

(Touch sensor LH circuit is open)

• Automatic back door control mod-

ule

Monitor item

Condition

Status

 TOUCH SEN LH

Touch sensor LH

Other than below

OFF

Detect obstruction

ON

(+)

(–)

Voltage

(Approx.)

Touch sensor LH

Connector

Terminal

D107

1

Ground

6 V

B2417 TOUCH SENSOR LH

DLK-91

< 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 LH GROUND CIRCUIT

1.

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

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK TOUCH SENSOR LH

Refer to 

DLK-91, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace touch sensor LH.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006225890

1.

CHECK TOUCH SENSOR LH

1.

Turn ignition switch OFF.

2.

Disconnect touch sensor LH connector.

3.

Check resistance between touch sensor LH terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace touch sensor LH.

Automatic back door control module

Touch sensor LH 

Continuity 

 Connector

Terminal

 Connector

Terminal

B26

14

D107

1

Existed

Automatic back door control module

Touch sensor LH

Continuity 

Connector

Terminal

Connector

Terminal

B26

15

D107

2

Existed

Touch sensor LH

 Condition

Resistance 

(Approx.)

Terminal

1

2

Touch sensor LH

Detect obstruction

120 

Ω

 or less

Other than above

1 k

Ω

 

±

 10%

DLK-92

< DTC/CIRCUIT DIAGNOSIS >

B2419 OPEN SWITCH

B2419 OPEN SWITCH

DTC Logic

INFOID:0000000006225891

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-92, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225892

1.

CHECK OPEN SWITCH SIGNAL

1.

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

2.

Select “OPEN 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 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 4.

NO

>> GO TO 3.

DTC

CONSULT-III display 

description

DTC detecting condition

Possible cause

B2419

OPEN SW

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

for 1 second or more after starting the closure 
open output for the 3rd time in a row

• The change of open switch cannot be detected 

for 0.5 second or more after starting the closure 
close output for the 3rd time in a row

• The condition that the open switch is in the ON 

position and the close switch is in the OFF posi-
tion is detected when starting the closure open/
close output for the 3rd time in a row

• Open switch
• Harness or connectors

(Open switch circuit is open or 
shorted)

• Automatic back door control mod-

ule

Monitor item

Condition

Status

OPEN SW

Back door

Fully closed/Half latch

OFF

Open

ON

(+)

(–)

Voltage

(Approx.)

Back door lock assembly

 Connector

Terminal

D157

4

Ground

Battery voltage

B2419 OPEN SWITCH

DLK-93

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

3.

CHECK OPEN 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-262, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK OPEN 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 harness.

5.

CHECK OPEN SWITCH

Refer to 

DLK-93, "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:0000000006225893

COMPONENT INSPECTION

1.

CHECK OPEN 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

Automatic back door control module

 Back door lock assembly

Continuity 

Connector

Terminal

Connector

Terminal

B26

20

D157

4

Existed

Automatic back door control module

Ground

Continuity 

Connector

Terminal

B26

20

Not existed

Back door lock assembly 

Ground

Continuity 

Connector

Terminal

D157

8

Existed

Back door lock assembly

Condition

Continuity

Terminal

4

8

Back door

Open

Existed

Fully closed/Half latch

Not existed