Nissan Murano Z51. Manual - part 1246

DIAGNOSIS SYSTEM (BCM)

SEC-31

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

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ACTIVE TEST

Monitor item 

Content

CONFRM ID ALL

Indicates [YET] at all time.
Switch to [DONE] when a registered Intelligent Key is inserted into the key slot.

CONFIRM ID4

CONFIRM ID3

CONFIRM ID2

CONFIRM ID1

TP 4

Indicates the number of ID which has been registered.

TP 3

TP 2

TP 1

PUSH SW

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

KEY SW -SLOT

Indicates [ON/OFF] condition of key slot.

Test item

Description

THEFT IND

This test is able to check security indicator lamp operation.
The lamp will be turned on when “ON” on CONSULT-III screen touched.

SEC-32

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

BCM

BCM : Description

INFOID:0000000005515471

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 detection ability. Modern
vehicle is equipped with many electronic control unit, 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-27, "CAN Communication Signal Chart"

.

BCM : DTC Logic

INFOID:0000000005515472

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005515473

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result”.

Is “U1000: CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

IPDM E/R

IPDM E/R : Description

INFOID:0000000005515474

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 detection ability. Modern
vehicle is equipped with many electronic control unit, 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-27, "CAN Communication Signal Chart"

.

IPDM E/R : DTC Logic

INFOID:0000000005515475

DTC DETECTION LOGIC

IPDM E/R : Diagnosis Procedure

INFOID:0000000005515476

1.

PERFORM SELF DIAGNOSTIC

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

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

CAN communication system

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When IPDM E/R cannot communicate CAN 
communication signal continuously for 2 
seconds or more

CAN communication system

U1000 CAN COMM CIRCUIT

SEC-33

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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1.

Turn the ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of IPDM E/R.

Is DTC “U1000” displayed?

YES

>> Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

SEC-34

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000005515477

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005515478

1.

REPLACE BCM

When DTC “U1010: CONTROL UNIT (CAN)” is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-95, "Exploded View"

.

BCM : Special Repair Requirement

INFOID:0000000005515479

1.

REQUIRED WORK WHEN REPLACING BCM

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

>> Work end.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM