Nissan Pathfinder. Manual - part 23

ADP-84

< DTC/CIRCUIT DIAGNOSIS >

B2116 TILT MOTOR

3.

CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT OUTPUT SIGNAL

1. Connect automatic drive positioner control unit connector.

2. Check voltage between automatic drive positioner control unit harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

NO

>> Replace automatic drive positioner control unit. Refer to 

ADP-162, "Removal and Installation"

.

(+)

(–)

Voltage (V)

(Approx.)

Automatic drive positioner control unit 

Connector

Terminals

M34

28

Ground

0

29

B2128 UART COMMUNICATION LINE

ADP-85

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

B2128 UART COMMUNICATION LINE

Description

INFOID:0000000009176572

Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1

communication line. Driver seat control unit receives the operation signals of ADP steering switch, door mirror

remote control switch and the position signals of tilt sensor, telescopic sensor and door mirror sensors from

the automatic drive positioner control unit and transmits the operation request signal.

DTC Logic

INFOID:0000000009176573

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-85, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176574

Regarding Wiring Diagram information, refer to 

ADP-55, "WITH AROUND VIEW MONITOR : Wiring Diagram"

or 

ADP-40, "WITHOUT AROUND VIEW MONITOR : Wiring Diagram"

. 

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.

3. Erase the DTC.

4. Perform DTC confirmation procedure. Refer to 

ADP-85, "DTC Logic"

.

Is the DTC displayed again?

YES

>> GO TO 2.

NO

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

2.

 CHECK UART COMMUNICATION LINE CONTINUITY

1. Turn ignition switch OFF.

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

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2128

UART COMM

The communication between driver seat control unit 
and automatic drive positioner control unit is interrupt-
ed 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

B209

15

M33

8

Yes

ADP-86

< DTC/CIRCUIT DIAGNOSIS >

B2128 UART COMMUNICATION LINE

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Repair or replace harness.

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B209

15

No

B2130 EEPROM

ADP-87

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

B2130 EEPROM

DTC Logic

INFOID:0000000009176575

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-87, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176576

1.

 PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.

3. Erase the DTC.

4. Perform DTC confirmation procedure. Refer to 

ADP-87, "DTC Logic"

.

Is the DTC displayed again?

YES

>> GO TO 2.

NO

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

2.

 REPLACE DRIVER SEAT CONTROL UNIT

Replace driver seat control unit. Refer to 

ADP-161, "Removal and Installation"

.

>> Inspection End.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2130

EEPROM

Driver seat control unit detected CPU malfunction.

• Driver seat control unit