Nissan Murano Z51 (2008 year). Manual

DIAGNOSIS SYSTEM (BCM)

SEC-263

< FUNCTION DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

THEFT ALM

THEFT ALM : CONSULT-III Function (BCM - THEFT)

INFOID:0000000003465861

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

DATA MONITOR

Test item

Description

DOOR LOCK-UNLOCK SET

Selective unlock function mode can be changed to operate (WITH) or not operate (WITHOUT)
with this mode.

HORN CHIRP SET

Answer back function (horn) mode can be changed in this mode.
For the detail of the setting.

HAZARD LAMP SET

Answer back function (hazard) mode can be changed in this mode.
• MODE1: Non-operation
• MODE2: Lock (non-operation) Unlock (blink once)
• MODE3: Lock (blink towice) Unlock (non-operation)
• MODE4: Lock (blink towice) Unlock (blink once)

AUTO LOCK SET

Auto door lock time can be changed in this mode.
• MODE 1: 1 minute
• MODE 2: 5 minutes

PANIC ALARM SET

Panic alarm button pressing time on keyfob remote control button can be selected from the
following with this mode.
• MODE1: 0.5 sec.
• MODE2: 1.5 sec.
• MODE3: Non-operation

PW DOWN SET

Unlock button pressing time on keyfob button can be selected from the following with this
mode.
• MODE 1: 3 sec.
• MODE 2: Non-operation
• MODE 3: 5 se

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

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

Monitored Item

Description

REQ SW -DR

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

REQ SW -AS

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

REQ SW -RR

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

REQ SW -RL

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

REQ SW -BD/TR

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

PUSH SW

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

UNLK SEN -DR

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

KEY SW -SLOT

Indicates [ON/OFF] condition of key slot.

DOOR SW-DR

Indicates [ON/OFF] condition of front door switch LH.

DOOR SW-AS

Indicates [ON/OFF] condition of front door switch RH.

Revision: 2008 October

2009 Murano

SEC-264

< FUNCTION DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

DIAGNOSIS SYSTEM (BCM)

WORK SUPPORT

ACTIVE TEST

IMMU

IMMU : CONSULT-III Function (BCM - IMMU)

INFOID:0000000003465862

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

DATA MONITOR

DOOR SW-RR

Indicates [ON/OFF] condition of rear door switch RH.

DOOR SW-RL

Indicates [ON/OFF] condition of rear door switch LH.

DOOR SW-BK

Indicates [ON/OFF] condition of back door switch.

CDL LOCK SW

Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.

CDL UNLOCK SW

Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.

KEY CYL LK-SW

Indicates [ON/OFF] condition of lock signal from front door key cylinder switch.

KEY CYL UN-SW

Indicates [ON/OFF] condition of unlock signal from front door key cylinder switch.

KEY CYL SW-TR

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

TR/BD OPEN SW

Indicates [ON/OFF] condition of back door opener switch.

TRNK/HAT MNTR

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

RKE-LOCK

Indicates [ON/OFF] condition of LOCK signal from keyfob.

RKE-UNLOCK

Indicates [ON/OFF] condition of UNLOCK signal from keyfob.

RKE-TR/BD

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

Monitored Item

Description

Test Item

Description

SECURITY ALARM SET

This mode is able to confirm and change security alarm ON-OFF setting.

THEFT ALM TRG

The switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching “CLEAR” on
CONSULT-III screen.

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 is touched.

VEHICLE SECURITY HORN

This test is able to check vehicle security horn operation. The horns will be activated for 0.5 sec-
onds after “ON” on CONSULT-III screen is touched.

HEADLAMP(HI)

This test is able to check vehicle security lamp operation. The headlamps will be activated for 0.5
seconds after “ON” on CONSULT-III screen is touched.

FLASHER

This test is able to check vehicle security hazard lamp operation. The hazard lamps will be activat-
ed after “ON” on CONSULT-III screen is touched.

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.

Revision: 2008 October

2009 Murano

DIAGNOSIS SYSTEM (BCM)

SEC-265

< FUNCTION DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

ACTIVE TEST

Monitor item

Content

CONFRM ID ALL

Indicates [YET] at all time.
Switch to [DONE] when a registered keyfob 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.

Revision: 2008 October

2009 Murano

SEC-266

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

U1000 CAN COMM CIRCUIT

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

BCM

BCM : Description

INFOID:0000000003465923

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-25, "CAN Communication Signal Chart"

BCM : DTC Logic

INFOID:0000000003465924

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000003465925

PERFORM SELF DIAGNOSTIC

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

Check “Self Diagnostic Result”.

Is “U1000: CAN COMM CIRCUIT” displayed?

YES

>> Refer to

LAN-16, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-40, "Intermittent Incident"

IPDM E/R

IPDM E/R : Description

INFOID:0000000003586762

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-25, "CAN Communication Signal Chart"

IPDM E/R : DTC Logic

INFOID:0000000003586763

DTC DETECTION LOGIC

IPDM E/R : Diagnosis Procedure

INFOID:0000000003586764

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

Revision: 2008 October

2009 Murano

U1000 CAN COMM CIRCUIT

SEC-267

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

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

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

Is DTC “U1000” displayed?

YES

>> Refer to

LAN-16, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-40, "Intermittent Incident"

Revision: 2008 October

2009 Murano

SEC-268

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000003465926

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000003465927

REPLACE BCM

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

>> Replace BCM. Refer to

BCS-96, "Exploded View"

BCM : Special Repair Requirement

INFOID:0000000003465928

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

Revision: 2008 October

2009 Murano

P1610 LOCK MODE

SEC-269

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

P1610 LOCK MODE

Description

INFOID:0000000003465929

When the starting operation is carried more than five times consecutively under the following conditions, NATS
will shift to the mode which prevents the engine from being started.
• Unregistered keyfob is used.
• BCM or ECM is malfunctioning.

DTC Logic

INFOID:0000000003465930

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-269, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465931

CHECK ENGINE START FUNCTION

Perform the check for DTC except DTC P1610.

Use CONSULT-III to erase DTC after fixing.

Turn ignition switch OFF.

Turn ignition switch ON when registered keyfob is inserted into key slot and wait for 5 seconds.

Return the ignition switch OFF and wait 5 seconds.

Repeat steps 4 and 5 twice (total of 3 cycles).

Check that engine can start when registered keyfob insert into key slot.

>> INSPECTION END

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

P1610

LOCK MODE

When the starting operation is carried out
five or more times consecutively under the
following conditions.
• Unregistered keyfob
• BCM or ECM is malfunctioning.

—

Revision: 2008 October

2009 Murano

SEC-270

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1611 ID DISCORD, IMMU-ECM

P1611 ID DISCORD, IMMU-ECM

Description

INFOID:0000000003465932

BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if
ignition switch is turned ON.

DTC Logic

INFOID:0000000003465933

DTC DETECTION LOGIC

NOTE:
• If DTC P1611 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-266, "BCM : DTC Logic"

• If DTC P1611 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-268, "BCM : DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON under the following conditions.

Selector lever is in the P or N position.

Do not depress brake pedal.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-270, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465934

PERFORM INITIALIZATION

Perform initialization with CONSULT-III. Re-register all keyfob.
For initialization and registration of keyfob. Refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Can the system be initialized and can the engine be started with re-registered keyfob?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE BCM

Replace BCM. Refer to

BCS-96, "Removal and Installation"

Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Can the system be initialized and can the engine be started with re-registered keyfob?

YES

>> INSPECTION END

>> GO TO 3.

REPLACE ECM

Replace ECM. Refer to

EC-15, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Descrip-

tion"

Perform initialization with CONSULT-III.

Can the system be initialized and can the engine be started with re-registered keyfob?

YES

>> INSPECTION END

>> GO TO 4.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

P1611

ID DISCORD, IMMU-
ECM

The ID verification result between BCM and ECM is
NG. The registration is necessary.

• BCM
• ECM

Revision: 2008 October

2009 Murano

P1611 ID DISCORD, IMMU-ECM

SEC-271

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

CHECK INTERMITTENT INCIDENT

Refer to

GI-40, "Intermittent Incident"

>> INSPECTION END

Revision: 2008 October

2009 Murano

SEC-272

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1612 CHAIN OF ECM-IMMU

P1612 CHAIN OF ECM-IMMU

Description

INFOID:0000000003465935

DTC Logic

INFOID:0000000003465936

DTC DETECTION LOGIC

NOTE:
• If DTC P1612 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-266, "BCM : DTC Logic"

• If DTC P1612 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-268, "BCM : DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON under the following conditions.

Selector lever is in the P or N position.

Do not depress brake pedal.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-272, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465937

REPLACE BCM

Replace BCM. Refer to

BCS-96, "Removal and Installation"

Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Does the engine start?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE ECM

Replace ECM. Refer to

EC-15, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description"

>> INSPECTION END

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

P1612

CHAIN OF ECM-IMMU

Inactive communication between ECM and BCM

• Harness or connectors

(The CAN communication line is open or
shorted)

• BCM
• ECM

Revision: 2008 October

2009 Murano

P1614 CHAIN OF IMMU-KEY

SEC-273

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

P1614 CHAIN OF IMMU-KEY

Description

INFOID:0000000003465938

Performs ID verification through BCM and keyfob when push-button ignition switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of keyfob is used.

DTC Logic

INFOID:0000000003465939

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE 1

Insert keyfob into the key slot.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-273, "Diagnosis Procedure"

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE 2

Press the push-button ignition switch.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-273, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465940

INSPECTION START

Perform inspection in accordance with procedure that confirms DTC.

Which procedure confirm DTC?

DTC confirmation procedure 1>>GO TO 2.
DTC confirmation procedure 2>>GO TO 4.

CHECK KEY SLOT INPUT SIGNAL

Turn ignition switch OFF.

Disconnect key slot connector.

Check voltage between key slot harness connector and ground.

Is the inspection result normal?

YES

>> Replace key slot. Refer to

SEC-442, "Removal and Installation"

>> GO TO 3.

CHECK KEY SLOT CIRCUIT

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

P1614

CHAIN OF IMMU-
KEY

Inactive communication between key slot and
BCM.

• Harness or connectors

(The key slot circuit is open or
shorted)

• Key slot
• BCM

(+)

(–)

Voltage (V)

(Approx.)

Key slot

Connector

Terminal

M99

Ground

Battery voltage

Revision: 2008 October

2009 Murano

SEC-274

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1614 CHAIN OF IMMU-KEY

Disconnect BCM connector.

Check continuity between key slot harness connector and BCM harness connector.

Check continuity between key slot harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace harness or connector.

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns ON.

Does ignition switch turn to ON?

YES

>> GO TO 5.

>> GO TO 7.

CHECK KEY SLOT COMMUNICATION SIGNAL

Turn ignition switch OFF.

Disconnect key slot connector.

Check voltage between key slot harness connector and ground.

Is the inspection result normal?

YES

>> Replace key slot. Refer to

SEC-442, "Removal and Installation"

>> GO TO 6.

CHECK KEY SLOT COMMUNICATION SIGNAL CIRCUIT

Disconnect BCM connector.

Check continuity between key slot harness connector and BCM harness connector.

Check continuity between key slot harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace harness or connector.

CHECK KEY SLOT GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect key slot connector.

Key slot

BCM

Continuity

Connector

Terminal

Connector

Terminal

M99

M122

Existed

Key slot

Ground

Continuity

Connector

Terminal

M99

Not existed

(+)

(–)

Voltage (V)

(Approx.)

Key slot

Connector

Terminal

M99

Ground

Battery voltage

Key slot

BCM

Continuity

Connector

Terminal

Connector

Terminal

M99

M122

Existed

Key slot

Ground

Continuity

Connector

Terminal

M99

Not existed

Revision: 2008 October

2009 Murano

P1614 CHAIN OF IMMU-KEY

SEC-275

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

Check continuity between key slot harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace harness or connector.

CHECK INTERMITTENT INCIDENT

Refer to

GI-40, "Intermittent Incident"

>> INSPECTION END

Key slot

Ground

Continuity

Connector

Terminal

M99

Existed

Revision: 2008 October

2009 Murano

SEC-276

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1615 DIFFRENCE OF KEY

P1615 DIFFRENCE OF KEY

Description

INFOID:0000000003465941

Performs ID verification through BCM and keyfob when push-button ignition switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of keyfob is used.

DTC Logic

INFOID:0000000003465942

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Press the push-button ignition switch.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-276, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465943

PERFORM INITIALIZATION

Perform initialization with CONSULT-III. Re-register all keyfobs.
For initialization and registration of keyfob. Refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Can the system be initialized and can the engine be started with re-registered keyfob?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE KEYFOB

Replace keyfob.

Perform initialization with CONSULT-III.
For initialization and registration of keyfob. Refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Can the system be initialized and can the engine be started with re-registered keyfob?

YES

>> INSPECTION END

>> GO TO 3.

CHECK INTERMITTENT INCIDENT

Refer to

GI-40, "Intermittent Incident"

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1615

DIFFERENCE OF KEY

The ID verification result between BCM and keyfob is NG.
The registration is necessary.

keyfob

Revision: 2008 October

2009 Murano

B2190 NATS ANTENNA AMP.

SEC-277

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

SEC

B2190 NATS ANTENNA AMP.

Description

INFOID:0000000003465944

Performs ID verification through BCM and keyfob when push-button ignition switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of keyfob is used.

DTC Logic

INFOID:0000000003465945

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Insert keyfob into the key slot.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-277, "Diagnosis Procedure"

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

Press the push-button ignition switch.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-277, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003465946

INSPECTION START

Perform inspection in accordance with procedure that confirms DTC.

Which procedure confirm DTC?

DTC confirmation procedure 1>>GO TO 2.
DTC confirmation procedure 2>>GO TO 4.

CHECK KEY SLOT INPUT SIGNAL

Turn ignition switch OFF.

Disconnect key slot connector.

Check voltage between key slot harness connector and ground.

Is the inspection result normal?

YES

>> Replace key slot. Refer to

SEC-442, "Removal and Installation"

>> GO TO 3.

CHECK KEY SLOT CIRCUIT

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2190

NATS ANTENNA
AMP

Inactive communication between key slot and
BCM.

• Harness or connectors

(The key slot circuit is open or
shorted)

• Key slot
• BCM

(+)

(–)

Voltage (V)

(Approx.)

Key slot

Connector

Terminal

M99

Ground

Battery voltage

Revision: 2008 October

2009 Murano

SEC-278

< COMPONENT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

B2190 NATS ANTENNA AMP.

Disconnect BCM connector.

Check continuity between key slot harness connector and BCM harness connector.

Check continuity between key slot harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace harness or connector.

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns ON.

Does ignition switch turn to ON?

YES

>> GO TO 5.

>> GO TO 7.

CHECK KEY SLOT COMMUNICATION SIGNAL

Turn ignition switch OFF.

Disconnect key slot connector.

Check voltage between key slot harness connector and ground.

Is the inspection result normal?

YES

>> Replace key slot. Refer to

SEC-442, "Removal and Installation"

>> GO TO 6.

CHECK KEY SLOT COMMUNICATION SIGNAL CIRCUIT

Disconnect BCM connector.

Check continuity between key slot harness connector and BCM harness connector.

Check continuity between key slot harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace harness or connector.

CHECK KEY SLOT GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect key slot connector.

Key slot

BCM

Continuity

Connector

Terminal

Connector

Terminal

M99

M122

Existed

Key slot

Ground

Continuity

Connector

Terminal

M99

Not existed

(+)

(–)

Voltage (V)

(Approx.)

Key slot

Connector

Terminal

M99

Ground

Battery voltage

Key slot

BCM

Continuity

Connector

Terminal

Connector

Terminal

M99

M122

Existed

Key slot

Ground

Continuity

Connector

Terminal

M99

Not existed

Revision: 2008 October

2009 Murano

Nissan Murano Z51 (2008 year). Manual - part 335