Infiniti QX56 (JA60). Manual - part 10

U1000 CAN COMM CIRCUIT

ADP-31

< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005147447

Refer to 

LAN-4, "System Description"

.

DTC Logic

INFOID:0000000005147448

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Turn ignition switch ON and wait at least 3 seconds.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?

YES

>> Perform diagnosis procedure. Refer to 

LAN-14, "Trouble Diagnosis Procedure"

.

NO

>> Inspection End.

Special Repair Requirement

INFOID:0000000005147449

Refer to Owner’s Manual.

DTC

Trouble diagnosis 

name

DTC detecting condition

Possible cause

U1000

CAN COMM CIR-
CUIT

• Driver seat control unit cannot communicate to other 

control units.

• Driver seat control unit cannot communicate for more 

than the specified time.

• Harness or connectors

(CAN communication line is 
open or shorted)

ADP-32

< COMPONENT DIAGNOSIS >

B2112 SLIDING MOTOR

B2112 SLIDING MOTOR

Description

INFOID:0000000005147450

• The seat sliding motor is installed to the power seat frame assembly.

• The seat sliding motor is installed with the driver seat control unit.

• Slides the seat frontward/rearward by changing the rotation direction of sliding motor.

DTC Logic

INFOID:0000000005147451

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Turn ignition switch ON.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected? 

YES

>> Perform diagnosis procedure. Refer to 

ADP-32, "Diagnosis Procedure"

.

NO

>> Inspection End.

NOTE:

First perform diagnosis for B2126 if B2126 is detected. Refer to 

ADP-42, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147452

1.

 PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT-III.

3. Erase the DTC.

4. Perform DTC confirmation procedure. Refer to 

ADP-32, "DTC Logic"

.

Is the DTC displayed again?

YES

>> GO TO 2

NO

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

2.

 CHECK COMPONENTS

Refer to 

ADP-81, "Component Function Check"

 and 

ADP-97, "Component Function Check"

.

>> Inspection End.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2112

SEAT SLIDE

The driver seat control unit detects the output of slid-
ing motor output terminal for 0.1 second or more 
even if the sliding switch is not input.

• Driver seat control unit

B2113 RECLINING MOTOR

ADP-33

< COMPONENT DIAGNOSIS >

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B2113 RECLINING MOTOR

Description

INFOID:0000000005147453

• The seat reclining motor is installed to the seatback assembly.

• The seat reclining motor is activated with the driver seat control unit.

• Tilts the seatback frontward/rearward by changing the rotation direction of reclining motor.

DTC Logic

INFOID:0000000005147454

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Turn ignition switch ON.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected? 

YES

>> Perform diagnosis procedure. Refer to 

ADP-33, "Diagnosis Procedure"

.

NO

>> Inspection End.

NOTE:

First perform diagnosis for B2126 if B2126 is detected. Refer to 

ADP-42, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147455

1.

 PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT-III.

3. Erase the DTC.

4. Perform DTC confirmation procedure. Refer to 

ADP-33, "DTC Logic"

.

Is the DTC displayed again?

YES

>> GO TO 2

NO

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

2.

 CHECK COMPONENTS

Refer to 

ADP-83, "Component Function Check"

 and 

ADP-99, "Component Function Check"

. 

>> Inspection End.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2113

SEAT RECLINING

The driver seat control unit detects the output of re-
clining motor output terminal for 0.1 second or more 
even if the reclining switch is not input.

• Driver seat control unit

ADP-34

< COMPONENT DIAGNOSIS >

B2114 SEAT LIFTER FR

B2114 SEAT LIFTER FR

Description

INFOID:0000000005147456

• The lifting motor (front) is installed to the power seat frame assembly.

• The lifting motor (front) is activated with the driver seat control unit.

• Tilts the seat front up/down by changing the rotation direction of lifting motor (front).

DTC Logic

INFOID:0000000005147457

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Turn ignition switch ON.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected? 

YES

>> Perform diagnosis procedure. Refer to 

ADP-34, "Diagnosis Procedure"

.

NO

>> Inspection End.

NOTE:

First perform diagnosis for B2126 if B2126 is detected. Refer to 

ADP-42, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147458

1.

 PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT-III.

3. Erase the DTC.

4. Perform DTC confirmation procedure. Refer to 

ADP-34, "DTC Logic"

.

Is the DTC displayed again?

YES

>> GO TO 2

NO

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

2.

 CHECK COMPONENTS

Refer to 

ADP-85, "Component Function Check"

 and 

ADP-101, "Component Function Check"

. 

>> Inspection End.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2114

SEAT LIFTER FR

The driver seat control unit detects the output of lift-
ing motor (front) output terminal for 0.1 second or 
more even if the lifting switch is not input.

• Driver seat control unit