Nissan Teana J32. Manual - part 316

DIAGNOSIS SYSTEM (BCM)

DLK-47

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

DATA MONITOR

ACTIVE TEST

Diagnosis mode

Function Description

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

Monitor Item

Contents

PUSH SW

Indicates [ON/OFF] condition of push-button ignition switch.

UNLK SEN -DR

NOTE:
This item is displayed, but cannot be monitored. 

VEH SPEED 1

Indicates [km/h] condition of vehicle speed signal from combination meter.

KEY CYL SW-TR

NOTE:
This item is displayed, but cannot be monitored. 

TR CANCEL SW

NOTE:
This item is displayed, but cannot be monitored. 

TR/BD OPEN SW

Indicates [ON/OFF] condition of trunk lid opener switch.

TRNK/HAT MNTR

NOTE:
This item is displayed, but cannot be monitored. 

RKE-TR/BD

NOTE:
This item is displayed, but cannot be monitored. 

Test item

Description

TRUNK/GLASS HATCH

This test is able to check trunk lid opener actuator open operation.

DLK-48

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

U1000 CAN COMM CIRCUIT

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

BCM

BCM : Description

INFOID:0000000003794769

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detectability. Modern vehi-
cles are equipped with many electronic control units, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-22, "CAN Communication Signal Chart"

.

BCM : DTC Logic

INFOID:0000000003794770

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000003794771

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 3 seconds or more.

2.

Check “Self Diagnostic Result”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-35, "Intermittent Incident"

.

DTC 

No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

U1000

CAN COMM CIRCUIT

When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds 
or more.

CAN communication system

U1010 CONTROL UNIT (CAN)

DLK-49

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000003794775

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000003794776

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-78, "Removal and Installation"

BCM : Special Repair Requirement

INFOID:0000000003794777

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize control unit. Refer to CONSULT-III operation manual NATS-IVIS/NVIS.

>> Work end.

DTC 

No.

Trouble diagnosis name

DTC detecting condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

DLK-50

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2621 INSIDE KEY ANTENNA 1

B2621 INSIDE KEY ANTENNA 1

Description

INFOID:0000000003794823

Detects whether Intelligent Key is inside the vehicle.
Installed in the instrument center.

DTC Logic

INFOID:0000000003794824

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on Work Support” in “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY” Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-50, "Diagnosis Procedure"

.

NO

>> Inside key antenna (instrument center) is OK.

Diagnosis Procedure

INFOID:0000000003794825

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2621

INSIDE ANTENNA 1 
CIRCUIT

An excessive high or low voltage from inside anten-
na is sent to BCM.

• Inside key antenna (instrument 

center)

• Between BCM and Inside key an-

tenna (instrument center)

(+)

(–)

Condition

Signal

(Reference value.)

BCM

Connector

Terminal

M122

78, 79

Ground

Place Intelligent Key inside the vehi-
cle.

Place Intelligent Key outside the ve-
hicle. 

JMKIA0062GB

JMKIA0063GB