Nissan Quest E52. Manual - part 15

U1010 CONTROL UNIT (CAN)

ADP-53

< DTC/CIRCUIT DIAGNOSIS >

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000009649631

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009649632

1.

REPLACE DRIVER SEAT CONTROL UNIT

When DTC [U1010] is detected, replace driver seat control unit.

>> Replace driver seat control unit. Refer to 

ADP-111, "Removal and Installation"

.

DTC 

No.

Trouble diagnosis name

DTC detecting condition

Possible cause

U1010

CONTROL UNIT (CAN)

When detecting error during the initial diagnosis of CAN con-
troller of driver seat control unit.

Driver seat control unit

ADP-54

< DTC/CIRCUIT DIAGNOSIS >

B2112 SLIDING MOTOR

B2112 SLIDING MOTOR

DTC Logic

INFOID:0000000009649633

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT.

Is the DTC detected? 

YES

>> Refer to 

ADP-54, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649634

1.

CHECK SLIDING MOTOR CIRCUIT (POWER SHORT)

1.

Turn ignition switch OFF.

2.

Disconnect sliding motor connector and driver seat control unit connector.

3.

Check voltage between sliding motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL 

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace driver seat control unit. Refer to 

ADP-111, "Removal and Installation"

.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> 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
• Slide motor harness is shorted

(+)

(-)

Voltage (V)

(Approx.)

Sliding motor

Connector

Terminals

B561

34

Ground

0

38

(+)

(-)

Voltage (V)

Driver seat control unit

Connector

Terminals

B551

34

Ground

0 – 1

38

B2113 RECLINING MOTOR

ADP-55

< DTC/CIRCUIT DIAGNOSIS >

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B2113 RECLINING MOTOR

DTC Logic

INFOID:0000000009649635

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT.

Is the DTC detected? 

YES

>> Refer to 

ADP-55, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649636

1.

CHECK RECLINING MOTOR CIRCUIT (POWER SHORT)

1.

Turn ignition switch OFF.

2.

Disconnect reclining motor connector and driver seat control unit connector.

3.

Check voltage between reclining motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace driver seat control unit. Refer to 

ADP-111, "Removal and Installation"

.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> 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
• Reclining motor harness is short-

ed

(+)

(-)

Voltage (V)

(Approx.)

Reclining motor

Connector

Terminals

B554

35

Ground

0

39

(+)

(-)

Voltage (V)

Driver seat control unit

Connector

Terminals

B551

35

Ground

0 – 1

39

ADP-56

< DTC/CIRCUIT DIAGNOSIS >

B2128 UART COMMUNICATION LINE

B2128 UART COMMUNICATION LINE

Description

INFOID:0000000009649637

Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1
communication lines. Driver seat control unit receives the operation signals of door mirror remote control
switch and the position signals of door mirror sensor from the automatic drive positioner control unit and trans-
mits the operation request signal.

DTC Logic

INFOID:0000000009649638

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT.

Is the DTC detected? 

YES

>> Refer to 

ADP-56, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649639

1.

CHECK UART COMMUNICATION LINE CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector and automatic drive positioner control unit connector.

3.

Check continuity between driver seat control unit harness connector and automatic drive positioner con-
trol unit harness connector.

4.

Check continuity between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

NO

>> Repair or replace harness or connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2128

UART COMM

The communication between driver seat control unit 
and auto drive positioner control unit is interrupted for 
a period of time.

• UART communication line

(UART communication line is 
open or shorted)

• Driver seat control unit
• Automatic drive positioner 

control unit

Driver seat control unit

Automatic drive positioner control unit

Continuity 

Connector

Terminal

Connector

Terminal

B552

2

M75

8

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B552

2

Not existed