Murano Cross Cabriolet Z51 (2011 year). Manual - part 42

PCS

POWER DISTRIBUTION SYSTEM

PCS-47

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[POWER DISTRIBUTION SYSTEM]

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JCMWA8067GB

Revision: 2012 March

2011 Murano CrossCabriolet

PCS-48

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[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

JCMWA8068GB

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

POWER DISTRIBUTION SYSTEM

PCS-49

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JCMWA8069GB

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PCS-50

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[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

JCMWA8070GB

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

POWER DISTRIBUTION SYSTEM

PCS-51

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[POWER DISTRIBUTION SYSTEM]

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JCMWA8071GB

Revision: 2012 March

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PCS-52

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000006939091

OVERALL SEQUENCE

DETAILED FLOW

JMKIA3449GB

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

DIAGNOSIS AND REPAIR WORK FLOW

PCS-53

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1.

GET INFORMATION ABOUT SYMPTOM

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

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC for BCM and IPDM E/R.

2.

Perform the following procedure if DTC is detected.

-

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

-

Erase DTC.

-

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

3.

Check related service bulletins for information.

Is any symptom 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.

3.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.
Connect CONSULT to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.
Connect CONSULT to the vehicle in “DATA MONITOR ” mode and check real time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

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"

, and determine trouble

diagnosis order.
NOTE:
Perform Component Function Check if DTC Confirmation Procedure is not included in 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 Confirmation
Procedure.
Is DTC detected?

YES

>> GO TO 7.

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

6.

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.

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.

Revision: 2012 March

2011 Murano CrossCabriolet

PCS-54

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS AND REPAIR WORK FLOW

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check voltage of related BCM terminals using CONSULT.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

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

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunction has been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that
the symptom is not detected.

Does the symptom reappear?

YES (DTC is detected)>>GO TO 7.
YES (Symptom remains)>>GO TO 6.
NO

>> INSPECTION END

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

B2553 IGNITION RELAY

PCS-55

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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DTC/CIRCUIT DIAGNOSIS

B2553 IGNITION RELAY

DTC Logic

INFOID:0000000006939098

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions (start the engine), and wait for at least 2 seconds.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT. 

Is DTC detected?

YES

>> Go to 

PCS-55, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006939099

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT. Refer to

PCS-23, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK FUSE

Check that the following fuse are not fusing.

Is the fuse fusing?

YES

>> Repair the applicable circuit. And then replace the fuse.

NO

>> GO TO 3.

3.

CHECK IGNITION RELAY FEEDBACK INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-78, "Removal and Installation"

.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2553

IGNITION RELAY

BCM detects a difference of signal for 2 seconds or 
more between the following information. 
• Ignition relay (fuse block) ON/OFF operation
• Ignition relay (fuse block) feedback.

• Harness or connectors

(Ignition relay feedback circuit is 
open or short)

• BCM
• IPDM  E/R

Signal name

Connection position

Fuse No.

Capacity

Ignition power supply

FUSE BLOCK (J/B)

3

10A

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M123

123

Ground

Ignition switch

OFF

0

ON

Battery voltage

Revision: 2012 March

2011 Murano CrossCabriolet

PCS-56

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2553 IGNITION RELAY

NO

>> GO TO 4.

4.

CHECK IGNITION RELAY FEEDBACK CIRCUIT

1.

Disconnect fuse block (J/B) connector.

2.

Check continuity between BCM harness connector and fuse block (J/B) harness connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-32, "Removal and Installation"

.

NO

>> Repair or replace harness.

BCM

FUSE BLOCK (J/B)

Continuity

Connector

Terminal

Connector

Terminal

M123

123

M1

2A

Existed

BCM

Ground

Continuity

Connector

Terminal

M123

123

Not existed

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

B260A IGNITION RELAY

PCS-57

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B260A IGNITION RELAY

DTC Logic

INFOID:0000000006939101

DTC DETECTION LOGIC

NOTE:
• If DTC B260A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-67, "DTC Logic"

.

• If DTC B260A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-68, "DTC Logic"

.

• If DTC B260A is displayed with DTC B261A, first perform the trouble diagnosis for DTC B261A. Refer to

PCS-69, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions, and wait for at least 2 seconds.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT. 

Is DTC detected?

YES

>> Go to 

PCS-57, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006939102

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT. Refer to 

PCS-23, "DTC Index"

.

Is DTC detected?

YES

>> Repair or replace the malfunctioning parts.

NO

>> GO TO 2.

2.

CHECK IGNITION RELAY INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-78, "Removal and Installation"

.

NO

>> GO TO 3.

3.

CHECK IGNITION RELAY (IPDM E/R) CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector and BCM harness connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B260A

IGNITION RELAY

BCM detects a difference of signal for 2 second or 
more between the following information.
• Ignition relay (IPDM E/R) operation request
• Ignition relay feedback from IPDM E/R (CAN).

• Harness or connectors

(Ignition relay operation circuit is 
open or shorted.)

• BCM
• IPDM  E/R

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M121

47

Ground

Battery voltage

Revision: 2012 March

2011 Murano CrossCabriolet

PCS-58

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B260A IGNITION RELAY

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-32, "Removal and Installation"

.

NO

>> Repair or replace harness.

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E10

27

M121

47

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

27

Not existed

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

B2614 ACC RELAY

PCS-59

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B2614 ACC RELAY

DTC Logic

INFOID:0000000006939104

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn the power supply position to ACC under the following conditions, and wait for at least 1 second.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT. 

Is DTC detected?

YES

>> Go to 

PCS-59, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006939105

1.

CHECK ACCESSORY RELAY POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Remove accessory relay.

3.

Check voltage between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK ACCESSORY RELAY POWER SUPPLY-2

1.

Disconnect fuse block (J/B) connector.

2.

Check voltage between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> GO TO 3.

3.

CHECK ACCESSORY RELAY POWER SUPPLY CIRCUIT-1

1.

Disconnect BCM connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2614

BCM

An immediate operation of accessory relay is re-
quested by BCM, but there is no response for more 
than 1 second.

• Harness or connectors

(Accessory relay circuit is open or 
shorted)

• Accessory relay

(+)

(–)

Condition

Voltage (V)

(Approx.)

Accessory relay

Terminal

1

Ground

Ignition switch

OFF

0

ACC

Battery voltage

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

M2

5B

Ground

Ignition switch

OFF

0

ACC

Battery voltage

Revision: 2012 March

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PCS-60

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY

2.

Check continuity between fuse block (J/B) harness connector and BCM harness connector.

3.

Check continuity between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-78, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK ACCESSORY RELAY GROUND CIRCUIT

Check continuity between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair accessory relay ground circuit.

5.

CHECK ACCESSORY RELAY POWER SUPPLY CIRCUIT-2

1.

Install accessory relay.

2.

Turn ignition switch ACC.

3.

Check voltage between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK ACCESSORY RELAY

Refer to 

PCS-60, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> Replace accessory relay.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006939106

1.

CHECK ACCESSORY RELAY

1.

Turn ignition switch OFF.

2.

Remove accessory relay.

Fuse block (J/B)

BCM

Continuity

Connector

Terminal

Connector

Terminal

M2

5B

M122

95

Existed

Fuse block (J/B)

Ground

Continuity

Connector

Terminal

M2

5B

Not existed

Accessory relay

Ground

Continuity

Terminal

2

Existed

(+)

(–)

Voltage (V)

(Approx.)

Accessory relay

Terminal

5

Ground

Battery voltage

Revision: 2012 March

2011 Murano CrossCabriolet

PCS

B2614 ACC RELAY

PCS-61

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[POWER DISTRIBUTION SYSTEM]

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3.

Check the continuity between accessory relay terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accessory relay.

Terminals

Condition

Continuity

3 and 5

12 V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

PBIB0098E

Revision: 2012 March

2011 Murano CrossCabriolet

PCS-62

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2615 BLOWER RELAY CIRCUIT

B2615 BLOWER RELAY CIRCUIT

DTC Logic

INFOID:0000000006939108

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions, and wait for at least 1 second.

-

Selector lever is in the P or N position

-

Do not depress brake pedal

2.

Check “Self diagnostic result” with CONSULT. 

Is DTC detected?

YES

>> Go to 

PCS-62, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006939109

1.

CHECK BLOWER RELAY POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Remove blower relay.

3.

Check voltage between blower relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK BLOWER RELAY POWER SUPPLY-2

1.

Disconnect fuse block (J/B) connector.

2.

Check voltage between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> GO TO 3.

3.

CHECK BLOWER RELAY POWER SUPPLY CIRCUIT-1

1.

Disconnect BCM connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2615

BCM

BCM detects a difference of signal for 1 second or 
more between the following information.
• Blower relay ON/OFF request 
• Blower relay feedback

• Harness or connectors 

(Blower relay circuit is open or 
shorted)

• Blower relay

(+)

(–)

Condition

Voltage (V)

(Approx.)

Blower relay

Terminal

1

Ground

Ignition switch

OFF or ACC

0

ON

Battery voltage

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

E103

6F

Ground

Ignition switch

OFF or ACC

0

ON

Battery voltage

Revision: 2012 March

2011 Murano CrossCabriolet