Murano Cross Cabriolet Z51 (2012 year). Manual

DIAGNOSIS AND REPAIR WORK FLOW

SEC-37

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

GET INFORMATION ABOUT SYMPTOM

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

CHECK DTC

Check DTC.

Perform the following procedure if DTC is detected.

Record DTC and freeze frame data (Print them out using CONSULT.)

Erase DTC.

Study the relationship between the cause detected by DTC and the symptom described by the customer.

Check related service bulletins for information.

Are any symptoms described and any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again. At this time, always connect CONSULT to the vehicle, and check diagnostic results in real time.
If two or more DTCs are detected, refer to

BCS-53, "DTC Inspection Priority Chart"

(BCM), and determine

trouble diagnosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service

Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.

Is DTC detected?

YES

>> GO TO 7.

>> Refer to

GI-40, "Intermittent Incident"

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.

YES

>> GO TO 7.

>> Monitor input data from related sensors or check voltage of related module terminals using CON-

SULT.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Revision: 2013 February

2012 Murano CrossCabriolet

SEC-38

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

DIAGNOSIS AND REPAIR WORK FLOW

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

>> Check according to

GI-40, "Intermittent Incident"

REPAIR OR REPLACE THE MALFUNCTIONING PART

Repair or replace the malfunctioning part.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE, and then check that the mal-
function is repaired securely.
When symptom is described from the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

Revision: 2013 February

2012 Murano CrossCabriolet

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

SEC-39

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ECM

ECM : Description

INFOID:0000000007563243

Performing the following procedure can automatically activate recommunication of ECM and BCM, but only
when the ECM is replaced with a new one*.
*: New one means a virgin ECM that has never been energized on-board.
(In this step, initialization procedure using CONSULT is not necessary)
NOTE:
• When the replaced ECM is not a brand new, the specified procedure (Initialization and registration)

using CONSULT is necessary.

• If multiple keys are attached to the key holder, separate them before beginning work.
• Distinguish keys with unregistered key IDs from those with registered IDs.

ECM : Work Procedure

INFOID:0000000007563244

PERFORM ECM RECOMMUNICATING FUNCTION

Install ECM.

Insert the registered Intelligent key* into key slot, then turn ignition switch ON.
*: To perform this step, use the key that is used before performing ECM replacement.

Maintain ignition switch in the ON position for at least 5 seconds.

Turn power supply position to OFF.

Check that the engine starts.

>> GO TO 2.

PERFORM ADDITIONAL SERVICE WHEN REPLACING ECM

Perform the following procedure,

EC-116, "Work Procedure"

>> END

BCM

BCM : Description

INFOID:0000000007563245

BEFORE REPLACEMENT

When replacing BCM, save or print current vehicle specification with CONSULT configuration before replace-
ment.
NOTE:
If “READ CONFIGURATION” can not be used, use the “WRITE CONFIGURATION - Manual selection” after
replacing BCM.

AFTER REPLACEMENT

CAUTION:

When replacing BCM, always perform “WRITE CONFIGURATION” with CONSULT. Or not doing so,
BCM control function does not operate normally.
• Complete the procedure of “WRITE CONFIGURATION” in order.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
• If you set incorrect “WRITE CONFIGURATION”, incidents might occur.
NOTE:
When replacing BCM, perform the system initialization (NATS) (if equipped).

BCM : Work Procedure

INFOID:0000000007563246

SAVING VEHICLE SPECIFICATION

CONSULT Configuration

Perform “READ CONFIGURATION” to save or print current vehicle specification. Refer to

BCS-62, "Descrip-

tion"

Revision: 2013 February

2012 Murano CrossCabriolet

SEC-40

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

NOTE:
If “READ CONFIGURATION” can not be used, use the “WRITE CONFIGURATION - Manual selection” after
replacing BCM.

>> GO TO 2.

REPLACE BCM

Replace BCM. Refer to

BCS-76, "Removal and Installation"

>> GO TO 3.

WRITING VEHICLE SPECIFICATION

CONSULT Configuration

Perform “WRITE CONFIGURATION - Config file” or “WRITE CONFIGURATION - Manual selection” to write
vehicle specification. Refer to

BCS-62, "Work Procedure"

>> GO TO 4.

INITIALIZE BCM (NATS) (IF EQUIPPED)

Perform BCM initialization. (NATS)

>> WORK END

Revision: 2013 February

2012 Murano CrossCabriolet

P1610 LOCK MODE

SEC-41

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

DTC/CIRCUIT DIAGNOSIS

P1610 LOCK MODE

Description

INFOID:0000000007563247

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 Intelligent Key is used.
• BCM or ECM is malfunctioning.

DTC Logic

INFOID:0000000007563248

DTC DETECTION LOGIC

NOTE:
If DTC P1610 is displayed with other DTC (for BCM or ENGINE), first perform the trouble diagnosis for other
DTC.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON.

Check DTC in “Self Diagnostic Result” mode of “BCM” and “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Go to

SEC-41, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563249

CHECK ENGINE START FUNCTION

Check that DTC except for DTC P1610 is not detected.
If detected, erase DTC after fixing.

Turn ignition switch OFF.

Insert Intelligent Key into key slot.

Turn ignition switch ON and wait 5 seconds.

Turn ignition switch OFF and wait 5 seconds.

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

Check that engine can start.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1610

LOCK MODE

When the starting operation is carried out 5 times or
more consecutively under the following conditions.
• Unregistered Intelligent Key
• BCM or ECM is malfunctioning.

—

Revision: 2013 February

2012 Murano CrossCabriolet

SEC-42

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

P1611 ID DISCORD, IMMU-ECM

P1611 ID DISCORD, IMMU-ECM

DTC Logic

INFOID:0000000007563250

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON.

Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Go to

SEC-42, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563251

PERFORM INITIALIZATION

Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

Can the system be initialized and can the engine be started with registered Intelligent Key?

YES

>> INSPECTION END

>> GO TO 2.

CHECK SELF DIAGNOSTIC RESULT

Select “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Erase DTC.

Perform DTC CONFIRMATION PROCEDURE for DTC P1611. Refer to

SEC-42, "DTC Logic"

Is DTC detected

YES

>> GO TO 3.

>> INSPECTION END

REPLACE BCM

Replace BCM. Refer to

BCS-76, "Removal and Installation"

Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

Can the system be initialized and can the engine be started with registered Intelligent Key?

YES

>> INSPECTION END

>> GO TO 4.

REPLACE ECM

Replace ECM. Refer to

EC-445, "Removal and Installation"

>> INSPECTION END

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.

• BCM
• ECM

Revision: 2013 February

2012 Murano CrossCabriolet

P1612 CHAIN OF ECM-IMMU

SEC-43

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

P1612 CHAIN OF ECM-IMMU

DTC Logic

INFOID:0000000007563252

DTC DETECTION LOGIC

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

BCS-65, "DTC Logic"

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

BCS-66, "DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON.

Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Go to

SEC-43, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563253

REPLACE BCM

Replace BCM. Refer to

BCS-76, "Removal and Installation"

Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

Can the system be initialized and can the engine be started with registered Intelligent Key?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE ECM

Replace ECM. Refer to

EC-445, "Removal and Installation"

>> 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: 2013 February

2012 Murano CrossCabriolet

SEC-44

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

P1614 CHAIN OF IMMU-KEY

P1614 CHAIN OF IMMU-KEY

DTC Logic

INFOID:0000000007563254

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE 1

Insert Intelligent Key into key slot.

Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Go to

SEC-44, "Diagnosis Procedure"

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE 2

Press push-button ignition switch.

Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Go to

SEC-44, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563255

INSPECTION START

Perform inspection in accordance with procedure that confirms DTC.
Which procedure confirms DTC?

DTC CONFIRMATION PROCEDURE 1>>GO TO 2.
DTC CONFIRMATION PROCEDURE 2>>GO TO 6.

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

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

Does ignition switch turn ON?

YES

>> GO TO 3.

>> GO TO 5.

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-108, "Removal and Installation"

>> GO TO 4.

CHECK KEY SLOT COMMUNICATION SIGNAL 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: 2013 February

2012 Murano CrossCabriolet

P1614 CHAIN OF IMMU-KEY

SEC-45

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

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.

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 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-108, "Removal and Installation"

>> GO TO 7.

CHECK KEY SLOT 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?

Key slot

BCM

Continuity

Connector

Terminal

Connector

Terminal

M99

M122

Existed

Key slot

Ground

Continuity

Connector

Terminal

M99

Not existed

Key slot

Ground

Continuity

Connector

Terminal

M99

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: 2013 February

2012 Murano CrossCabriolet

Murano Cross Cabriolet Z51 (2012 year). Manual - part 78