Murano Cross Cabriolet Z51 (2013 year). Manual — part 66
PCS-36
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
SYSTEM
NOTE:
*: Power supply position shifts to “LOCK” from “OFF”, when ignition switch is in the OFF position, selector lever is in the P position, and
any of the following conditions are met.
• Closing door
• Opening door
• Door is locked using door request switch
• Door is locked using Intelligent Key
The power supply position shifts to “ACC” when the push-button ignition switch (push switch) is pushed at “LOCK”.
Vehicle speed: 4 km/h (2.5 MPH) or more
Emergency stop operation
• Press and hold the push-button ignition switch for 2 seconds or more.
• Press the push-button ignition switch 3 times or more within 1.5 seconds.
Fail-safe
INFOID:0000000008463333
FAIL-SAFE CONTROL BY DTC
BCM performs fail-safe control when any DTC are detected.
LOCK*
→
START
ACC
→
START
ON
→
START
P or N position
Depressed
1
Engine is running
→
OFF
—
—
1
Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever
Brake pedal operation condi-
tion
Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever
Brake pedal operation condi-
tion
Engine is running
→
ACC
—
—
Emergency stop operation
Engine stall return operation while
driving
N position
Not depressed
1
Display contents of CONSULT
Fail-safe
Cancellation
B2190: NATS ANTENNA AMP
Inhibit engine cranking
Erase DTC
B2191: DIFFERENCE OF KEY
Inhibit engine cranking
Erase DTC
B2192: ID DISCORD BCM-ECM
Inhibit engine cranking
Erase DTC
B2193: CHAIN OF BCM-ECM
Inhibit engine cranking
Erase DTC
B2195: ANTI SCANNING
Inhibit engine cranking
Ignition switch ON
→
OFF
B2560: STARTER CONT RELAY
Inhibit engine cranking
500 ms after the following CAN signal communication status be-
comes consistent
• Starter control relay signal
• Starter relay status signal
B2608: STARTER RELAY
Inhibit engine cranking
500 ms after the following signal communication status becomes
consistent
• Starter motor relay control signal
• Starter relay status signal (CAN)
B260A: IGNITION RELAY
Inhibit engine cranking
500 ms after the following conditions are fulfilled
• IGN relay (IPDM E/R) control signal: OFF (Battery voltage)
• Ignition ON signal (CAN to IPDM E/R): OFF (Request signal)
• Ignition ON signal (CAN from IPDM E/R): OFF (Condition signal)
B260F: ENG STATE SIG LOST
Maintains the power supply
position attained at the time
of DTC detection
When any of the following conditions are fulfilled
• Power position changes to ACC
• Receives engine status signal (CAN)
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
SYSTEM
PCS-37
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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B2617: STARTER RELAY CIRC
Inhibit engine cranking
1 second after the starter motor relay control inside BCM becomes
normal
B2618: BCM
Inhibit engine cranking
1 second after the ignition relay (IPDM E/R) control inside BCM be-
comes normal
B261E: VEHICLE TYPE
Inhibit engine cranking
BCM initialization
Display contents of CONSULT
Fail-safe
Cancellation
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-38
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000008973101
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×
: Applicable item
NOTE:
*: This item is displayed, but is not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT.
Diagnosis mode
Function Description
Work Support
Changes the setting for each system function.
Self Diagnostic Result
Displays the diagnosis results judged by BCM.
CAN Diag Support Monitor
Monitors the reception status of CAN communication viewed from BCM.
Data Monitor
The BCM input/output signals are displayed.
Active Test
The signals used to activate each device are forcibly supplied from BCM.
Ecu Identification
The BCM part number is displayed.
Configuration
• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.
System
Sub system selection item
Diagnosis mode
Work Support
Data Monitor
Active Test
Door lock
DOOR LOCK
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps
FLASHER
×
×
×
—
AIR CONDITONER*
• Intelligent Key system
• Engine start system
INTELLIGENT KEY
×
×
×
Combination switch
COMB SW
×
Body control system
BCM
×
NVIS - NATS
IMMU
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Trunk lid opener system
TRUNK
×
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
Signal buffer system
SIGNAL BUFFER
×
×
TPMS
AIR PRESSURE MONITOR
×
×
×
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
DIAGNOSIS SYSTEM (BCM)
PCS-39
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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NOTE:
*: Power supply position shifts to “LOCK” from “OFF”, when ignition switch is in the OFF position, selector lever is in the P position, and
any of the following conditions are met.
• Closing door
• Opening door
• Door is locked using door request switch
• Door is locked using Intelligent Key
The power supply position shifts to “ACC” when the push-button ignition switch (push switch) is pushed at “LOCK”.
INTELLIGENT KEY
INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)
INFOID:0000000008973100
WORK SUPPORT
CONSULT screen item
Indication/Unit
Description
Vehicle Speed
km/h
Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter
km
Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition
SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”*)
SLEEP>OFF
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC
While turning power supply position from “LOCK” to “ACC”
ACC>ON
While turning power supply position from “ACC” to “IGN”
RUN>ACC
While turning power supply position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN
While turning power supply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT
While turning power supply position from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF
While turning power supply position from “ACC” to “OFF”
OFF>LOCK
While turning power supply position from “OFF” to “LOCK”*
OFF>ACC
While turning power supply position from “OFF” to “ACC”
ON>CRANK
While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”*) to low power consumption mode
LOCK
Power supply position is “LOCK”*
OFF
Power supply position is “OFF” (Ignition switch OFF)
ACC
Power supply position is “ACC” (Ignition switch ACC)
ON
Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN
Power supply position is “RUN” (Ignition switch ON with engine
running)
CRANKING
Power supply position is “CRANKING” (At engine cranking)
IGN Counter
0 - 39
The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1
→
2
→
3...38
→
39 after returning to the normal condition
whenever ignition switch OFF
→
ON.
• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-40
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
SELF-DIAG RESULT
DATA MONITOR
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
Monitor item
Description
CONFIRM KEY FOB ID
It can be checked whether Intelligent Key ID code is registered or not in this mode
AUTO LOCK SET
Auto door lock time can be changed in this mode
• MODE 1: 1 minute
• MODE 2: 5 minutes
• MODE 3: 30 seconds
• MODE 4: 2 minutes
LOCK/UNLOCK BY I-KEY
Door lock/unlock function by door request switch mode can be changed to operate (ON) or not op-
erate (OFF) in this mode
ENGINE START BY I-KEY
Engine start function mode can be changed to operate (ON) or not operate (OFF) with this mode
TRUNK/GLASS HATCH OPEN
Buzzer reminder function mode by trunk lid opener request switch can be changed to operate (ON)
or not operate (OFF) with this mode
PANIC ALARM SET
Panic alarm button pressing time on Intelligent Key remote control button can be selected from the
following with this mode
• MODE 1: 0.5 sec.
• MODE 2: Non-operation
• MODE 3: 1.5 sec.
PW DOWN SET
Unlock button pressing time on Intelligent Key button can be selected from the following with this
mode
• MODE 1: 3 sec.
• MODE 2: Non-operation
• MODE 3: 5 sec.
TAKE OUT FROM WIN WARN
NOTE:
This item is displayed, but cannot be used
TRUNK OPEN DELAY
Trunk button pressing on Intelligent Key can be selected as per the following in this mode
• MODE 1: Press and hold
• MODE 2: Press twice
• MODE 3: Press and hold, or press twice
LO- BATT OF KEY FOB WARN
Intelligent Key low battery warning mode can be changed to operate (ON) or not operate (OFF)
with this mode
ANTI KEY LOCK IN FUNCTI
Key reminder function mode can be changed to operate (ON) or not operate (OFF) with this mode.
HAZARD ANSWER BACK
Hazard reminder function mode can be selected from the following with this mode
• LOCK ONLY: Door lock operation only
• UNLOCK ONLY: Door unlock operation only
• LOCK/UNLOCK: Lock/unlock operation
• OFF: Non-operation
ANS BACK I-KEY LOCK
Buzzer reminder function (lock operation) mode by door request switch (driver side and passenger
side) can be selected from the following with this mode
• Horn chirp: Sound horn
• Buzzer: Sound Intelligent Key warning buzzer
• OFF: Non-operation
ANS BACK I-KEY UNLOCK
Buzzer reminder function (unlock operation) mode by door request switch can be changed to op-
erate (ON) or not operate (OFF) with this mode
SHORT CRANKING OUTPUT
Starter motor can operate during the times below
• 70 msec
• 100 msec
• 200 msec
INSIDE ANT DIAGNOSIS
This function allows inside key antenna self-diagnosis
HORN WITH KEYLESS LOCK
Horn reminder function mode by Intelligent Key button can be changed to operate (ON) or not op-
erate (OFF) with this mode
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
DIAGNOSIS SYSTEM (BCM)
PCS-41
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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Monitor Item
Condition
REQ SW -DR
Indicates [ON/OFF] condition of door request switch (driver side)
REQ SW -AS
Indicates [ON/OFF] condition of door request switch (passenger side)
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
Indicates [ON/OFF] condition of trunk lid opener request switch
PUSH SW
Indicates [ON/OFF] condition of push-button ignition switch
IGN RLY2 -F/B
Indicates [ON/OFF] condition of ignition relay 2
ACC RLY-FB
NOTE:
This item is displayed, but cannot be monitored.
CLUCH SW
NOTE:
This item is displayed, but cannot be monitored
BRAKE SW 1
Indicates [ON/OFF]* condition of brake switch power supply
BRAKE SW 2
Indicates [ON/OFF] condition of brake switch
DETE/CANCL SW
Indicates [ON/OFF] condition of P position
SFT PN/N SW
Indicates [ON/OFF] condition of P or N position
S/L -LOCK
NOTE:
This item is displayed, but cannot be monitored
S/L -UNLOCK
NOTE:
This item is displayed, but cannot be monitored
S/L RELAY -F/B
NOTE:
This item is displayed, but cannot be monitored
UNLK SEN -DR
Indicates [ON/OFF] condition of driver door unlock status
PUSH SW -IPDM
Indicates [ON/OFF] condition of push-button ignition switch
IGN RLY1 -F/B
Indicates [ON/OFF] condition of ignition relay 1
DETE SW -IPDM
Indicates [ON/OFF] condition of P position
SFT PN -IPDM
Indicates [ON/OFF] condition of P or N position
SFT P -MET
Indicates [ON/OFF] condition of P position
SFT N -MET
Indicates [ON/OFF] condition of N position
ENGINE STATE
Indicates [STOP/START/CRANK/RUN] condition of engine states
S/L LOCK-IPDM
NOTE:
This item is displayed, but cannot be monitored
S/L UNLK-IPDM
NOTE:
This item is displayed, but cannot be monitored
S/L RELAY-REQ
NOTE:
This item is displayed, but cannot be monitored
VEH SPEED 1
Display the vehicle speed signal received from combination meter by numerical value [Km/h]
VEH SPEED 2
Display the vehicle speed signal received from ABS or VDC or CVT by numerical value [Km/h]
DOOR STAT-DR
Indicates [LOCK/READY/UNLOCK] condition of driver side door status
DOOR STAT-AS
Indicates [LOCK/READY/UNLOCK] condition of passenger side door status
ID OK FLAG
Indicates [SET/RESET] condition of key ID
PRMT ENG STRT
Indicates [SET/RESET] condition of engine start possibility
PRMT RKE STRT
NOTE:
This item is displayed, but cannot be monitored
KEY SW -SLOT
Indicates [ON/OFF] condition of key slot
TRNK/HAT MNTR
Indicates [ON/OFF] condition of trunk room lamp switch
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-42
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.
ACTIVE TEST
RKE-LOCK
Indicates [ON/OFF] condition of door lock signal from Intelligent Key
RKE-UNLOCK
Indicates [ON/OFF] condition of door unlock signal from Intelligent Key
RKE-TR/BD
Indicates [ON/OFF] condition of trunk open signal from Intelligent Key
RKE-PANIC
Indicates [ON/OFF] condition of panic alarm button of Intelligent Key
RKE-P/W OPEN
Indicates [ON/OFF] condition of P/W DOWN signal from Intelligent Key
RKE-MODE CHG
Indicates [ON/OFF] condition of MODE CHANGE signal from Intelligent Key
RKE OPE COUN1
When remote keyless entry receiver (front side) receives the signal transmitted while operating on Intelli-
gent Key, the numerical value start changing.
RKE OPE COUN2
When remote keyless entry receiver (rear side) receives the signal transmitted while operating on Intelli-
gent Key, the numerical value start changing.
Monitor Item
Condition
Test item
Description
BATTERY SAVER
This test is able to check interior room lamp operation.
The interior room lamp will be activated after “ON” on CONSULT screen is touched.
PW REMOTO DOWN SET
This test is able to check power window down operation.
The power window down will be activated after “ON” on CONSULT screen is touched.
INSIDE BUZZER
This test is able to check warning chime in combination meter operation.
• Take away warning chime sounds when “TAKE OUT” on CONSULT screen is touched.
• Key warning chime sounds when “KEY WARN” on CONSULT screen is touched.
• P position warning chime sounds when “P RNG WARN” on CONSULT screen is touched.
• ACC warning chime sounds when “ACC WARN” on CONSULT screen is touched.
OUTSIDE BUZZER
This test is able to check Intelligent Key warning buzzer operation.
The Intelligent Key warning buzzer will be activated after “ON” on CONSULT screen is touched.
INDICATOR
This test is able to check warning lamp operation.
• “KEY” Warning lamp illuminates when “KEY ON” on CONSULT screen is touched.
• “KEY” Warning lamp flashes when “KEY IND” on CONSULT screen is touched.
INT LAMP
This test is able to check interior room lamp operation.
The interior room lamp will be activated after “ON” on CONSULT screen is touched.
LCD
This test is able to check meter display information
• Engine start information displays when “BP N” on CONSULT screen is touched.
• Engine start information displays when “BP I” on CONSULT screen is touched.
• Key ID warning displays when “ID NG” on CONSULT screen is touched.
• ROTAT: This item is displayed, but cannot be tested.
• P position warning displays when SFT P on CONSULT screen is touched.
• Intelligent Key insert information displays when “INSRT” on CONSULT screen is touched.
• Intelligent Key low battery warning displays when “BATT” on CONSULT screen is touched.
• Take away through window warning displays when “NO KY” on CONSULT screen is touched.
• Take away warning display when “OUTKEY” on CONSULT screen is touched.
• OFF position warning display when “LK WN” on CONSULT screen is touched.
TRUNK/GLASS HATCH
NOTE:
This item is displayed, but cannot be tested.
FLASHER
This test is able to check hazard warning lamp operation.
The hazard warning lamps will be activated after “ON” on CONSULT screen is touched.
HORN
This test is able to check horn operation.
The horn will be activated after “ON” on CONSULT screen is touched.
P RANGE
This test is able to check CVT shift selector power supply
CVT shift selector power is supplied when “ON” on CONSULT screen is touched.
ENGINE SW ILLUMI
This test is able to check push-ignition switch illumination operation.
Push-ignition switch illumination illuminates when “ON” on CONSULT screen is touched.
LOCK INDICATOR
This test is able to check indicator in push-ignition switch operation.
Indicator in push-button ignition switch illuminates when “ON” on CONSULT screen is touched.
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
DIAGNOSIS SYSTEM (BCM)
PCS-43
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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ACC INDICATOR
This test is able to check indicator in push-ignition switch operation.
Indicator in push-button ignition switch illuminates when “ON” on CONSULT screen is touched.
IGNITION ON IND
This test is able to check indicator in push-ignition switch operation.
Indicator in push-button ignition switch illuminates when “ON” on CONSULT screen is touched.
KEY SLOT ILLUMI
This test is able to check key slot illumination operation.
Key slot illumination flash when “ON” on CONSULT screen is touched.
TRUNK/BACK DOOR
NOTE:
This item is displayed, but cannot be tested.
Test item
Description
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-44
< ECU DIAGNOSIS INFORMATION >
[POWER DISTRIBUTION SYSTEM]
BCM, IPDM E/R
ECU DIAGNOSIS INFORMATION
BCM, IPDM E/R
List of ECU Reference
INFOID:0000000008463336
ECU
Reference
BCM
BCS-54, "DTC Inspection Priority Chart"
IPDM E/R
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
POWER DISTRIBUTION SYSTEM
PCS-45
< WIRING DIAGRAM >
[POWER DISTRIBUTION SYSTEM]
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WIRING DIAGRAM
POWER DISTRIBUTION SYSTEM
Wiring Diagram
INFOID:0000000008463337
For connector terminal arrangements, harness layouts, and alphabets in a
(option abbreviation; if not
described in wiring diagram), refer to
GI-12, "Connector Information"
JCMWA8066GB
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-46
< WIRING DIAGRAM >
[POWER DISTRIBUTION SYSTEM]
POWER DISTRIBUTION SYSTEM
JCMWA8067GB
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
DIAGNOSIS AND REPAIR WORK FLOW
PCS-47
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000008463338
OVERALL SEQUENCE
DETAILED FLOW
JMKIA8652GB
Revision: 2012 October
2013 Murano CrossCabriolet
PCS-48
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS AND REPAIR WORK FLOW
1.
GET INFORMATION FOR SYMPTOM
1.
Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).
2.
Check operation condition of the function that is malfunctioning.
>> GO TO 2.
2.
CHECK DTC
1.
Check DTC.
2.
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.
3.
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.
3.
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.
4.
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.
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 self diagnostic results in real time.
If two or more DTCs are detected, refer to
BCS-54, "DTC Inspection Priority Chart"
, 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.
NO
>> Check according 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.
Is the symptom described?
YES
>> GO TO 7.
NO
>> Monitor input data from related sensors or check voltage of related module terminals using CON-
SULT.
7.
DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE
Revision: 2012 October
2013 Murano CrossCabriolet
PCS
DIAGNOSIS AND REPAIR WORK FLOW
PCS-49
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
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Inspect according to Diagnosis Procedure of the system.
Is malfunctioning part detected?
YES
>> GO TO 8.
NO
>> Check according to
GI-40, "Intermittent Incident"
.
8.
REPAIR OR REPLACE THE MALFUNCTIONING PART
1.
Repair or replace the malfunctioning part.
2.
Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.
3.
Check DTC. If DTC is detected, erase it.
>> GO TO 9.
9.
FINAL CHECK
When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by 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: 2012 October
2013 Murano CrossCabriolet
PCS-50
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B2553 IGNITION RELAY
DTC/CIRCUIT DIAGNOSIS
B2553 IGNITION RELAY
DTC Logic
INFOID:0000000008463339
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000008463340
1.
CHECK DTC WITH IPDM E/R
Check “Self diagnostic result” with CONSULT. Refer to
.
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-77, "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 October
2013 Murano CrossCabriolet
PCS
B2553 IGNITION RELAY
PCS-51
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
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-31, "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 October
2013 Murano CrossCabriolet
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