Nissan Murano Z51 (2008 year). Manual — part 279
PCS
DIAGNOSIS AND REPAIR WORK FLOW
PCS-35
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000003375856
OVERALL SEQUENCE
DETAILED FLOW
JMKIA3449GB
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[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS AND REPAIR WORK FLOW
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-III.)
-
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-III 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-III 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-III to the vehicle, and check diagnostic results in real time.
If two or more DTCs are detected, refer to
SEC-209, "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: 2008 October
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DIAGNOSIS AND REPAIR WORK FLOW
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Is malfunctioning part detected?
YES
>> GO TO 8.
NO
>> Check voltage of related BCM terminals using CONSULT-III.
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: 2008 October
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PCS-38
< FUNCTION DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
POWER DISTRIBUTION SYSTEM
FUNCTION DIAGNOSIS
POWER DISTRIBUTION SYSTEM
System Description
INFOID:0000000003375857
SYSTEM DESCRIPTION
• PDS (POWER DISTRIBUTION SYSTEM) is the system that BCM controls with the operation of the push-
button ignition switch and performs the power distribution to each power circuit. This system is used instead
of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.
• The push-button ignition switch can be operated when Intelligent Key is in the following condition. Refer to
Engine Start Function for details. (With Intelligent key system)
- Intelligent Key is in the detection area of the inside key antenna
- Insert Intelligent Key into the key slot
• The push-button ignition switch can be operated when keyfob is in the following condition. Refer to Engine
Start Function for details. (Without Intelligent key system)
- Insert keyfob into the key slot
• The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply posi-
tion according to the status and operates the following relays to supply power to each power circuit.
- Ignition relay (inside IPDM E/R)
- Ignition relay (inside fuse block)
- ACC relay
- Blower relay
NOTE:
The engine switch operation changes due to the conditions of brake pedal, selector lever and vehicle speed.
• The power supply position can be confirmed with the lighting of the indicators around the push-button igni-
tion switch.
BATTERY SAVER SYSTEM
When all the following conditions are met for 60 minutes, the battery saver system will cut off the power supply
to prevent battery discharge.
• The ignition switch is in the ACC position
• All doors are closed
• Selector lever is in the P position
Reset Condition of Battery Saver System
In order to prevent the battery from discharging, the battery saver system will cut off the power supply when all
doors are closed, the selector lever is on P position and the ignition switch is left on ACC position for 60 min-
utes. If any of the following conditions are met the battery saver system is released and the steering will
change automatically to lock position from OFF position.
• Opening any door
• Operating with door key cylinder on door lock
• Operating with door request switch on door lock (With Intelligent Key system)
• Operating with Intelligent Key on door lock (With Intelligent Key system)
• Operating with keyfob on door lock (Without Intelligent Key system)
Press push-button ignition switch and ignition switch will change to ACC position from OFF position.
STEERING LOCK OPERATION
Steering is locked by steering lock unit when ignition switch is in the OFF position, selector lever is in the P
position and any of the following conditions are met.
• Opening door
• Closing door
• Door is locked with request switch (With Intelligent Key system)
• Door is locked with Intelligent Key (With Intelligent key system)
• Door is locked with keyfob (Without Intelligent Key system)
POWER SUPPLY POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERA-
TION
The power supply position changing operation can be performed with the following operations.
NOTE:
• When an Intelligent Key is within the detection area of inside key antenna and when it is inserted to the key
slot, it is equivalent to the operations below. (With Intelligent Key system)
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POWER DISTRIBUTION SYSTEM
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• When keyfob is inserted to the key slot, it is equivalent to the operation below. (Without Intelligent Key sys-
tem)
• When starting the engine, the BCM monitors under the engine start conditions,
- Brake pedal operating condition
- Selector lever position
- Vehicle speed
Vehicle speed: less than 4 km/h (2.5 MPH)
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.
Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever
Brake pedal operation condi-
tion
LOCK
→
ACC
—
Not depressed
1
LOCK
→
ACC
→
ON
—
Not depressed
2
LOCK
→
ACC
→
ON
→
OFF
—
Not depressed
3
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
Engine is running
→
ACC
—
—
Emergency stop operation
Engine stall return operation while
driving
N position
Not depressed
1
Revision: 2008 October
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PCS-40
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[POWER DISTRIBUTION SYSTEM]
POWER DISTRIBUTION SYSTEM
Component Parts Location
INFOID:0000000003375858
Component Description
INFOID:0000000003375859
JMMIA0009ZZ
1.
BCM M118, M119, M121, M122, M123 2.
TCM F23
3.
IPDM E/R E10, E11, F12
4.
Push-button ignition switch M101
5.
Combination meter (Key warning
lamp) M34
6.
Stop lamp switch
E115 (TYPE A)
E116 (TYPE B)
A.
Behind the combination meter
B.
Engine room dash panel (LH)
C.
Behind the instrument lower panel LH
Component
Reference
IPDM E/R
Ignition relay (built into IPDM E/R)
Ignition relay (inserted into fuse block)
Accessory relay
Blower relay
Stop lamp switch
Park/neutral position switch
Push-button ignition switch
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DIAGNOSIS SYSTEM (BCM)
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)
INFOID:0000000004757251
APPLICATION ITEM
CONSULT-III 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:
• *1: At models with Intelligent Key system this item is displayed, but is not used.
• *2: At models with rain sensor this mode is displayed, but is not used.
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. Refer to CONSULT-III opera-
tion manual.
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
×
×
×
Remote keyless entry system
MULTI REMOTE ENT*
1
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
*
2
×
×
Turn signal and hazard warning lamps
FLASHER
×
×
×
—
AIR CONDITONER*
3
• 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
×
×
×
Back door opener system
TRUNK
×
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
Signal buffer system
SIGNAL BUFFER
×
×
TPMS
TPMS (AIR PRESSURE MONITOR)
×
×
×
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[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
• *3: 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-III.
INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)
INFOID:0000000004757252
BCM CONSULT-III FUNCTION
CONSULT-III performs the following functions via CAN communication with BCM.
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” (Ignition switch OFF with steer-
ing is locked.)
OFF
Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)
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.
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DIAGNOSIS SYSTEM (BCM)
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WORK SUPPORT
SELF-DIAG RESULT
Diagnosis mode
Function Description
WORK SUPPORT
Changes the setting for each system function.
SELF-DIAG RESULTS
Displays the diagnosis results judged by BCM.
DATA MONITOR
The BCM input/output signals are displayed.
ACTIVE TEST
The signals used to activate each device are forcibly supplied from BCM.
Monitor item
Description
REMO CONT ID CONFIR
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 (driver side, passenger side and back door) mode
can be changed to operate (ON) or not operate (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 back door 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.
TRUNK OPEN DELAY
NOTE:
This item is displayed, but cannot be supported.
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: 2008 October
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PCS-44
< FUNCTION DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
DATA MONITOR
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 back door 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
Indicates [ON/OFF] condition of steering lock unit (LOCK).
S/L -UNLOCK
Indicates [ON/OFF] condition of steering lock unit (UNLOCK).
S/L RELAY -F/B
Indicates [ON/OFF] condition of ignition switch.
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
Indicates [ON/OFF] condition of steering lock unit (LOCK).
S/L UNLK-IPDM
Indicates [ON/OFF] condition of steering lock unit (UNLOCK).
S/L RELAY-REQ
Indicates [ON/OFF] condition of steering lock relay.
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
NOTE:
This item is displayed, but cannot be monitored.
RKE-LOCK
Indicates [ON/OFF] condition of LOCK signal from Intelligent Key.
RKE-UNLOCK
Indicates [ON/OFF] condition of UNLOCK signal from Intelligent Key.
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DIAGNOSIS SYSTEM (BCM)
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*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.
ACTIVE TEST
RKE-TR/BD
NOTE:
This item is displayed, but cannot be monitored.
RKE-PANIC
Indicates [ON/OFF] condition of PANIC 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 receives the signal transmitted while operating on Intelligent Key, the
numerical value start changing.
RKE OPE COUN2
NOTE:
This item is displayed, but cannot be monitored.
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-III 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-III 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-III screen is touched.
• Key warning chime sounds when “KEY WARN” on CONSULT-III screen is touched.
• P position warning chime sounds when “P RNG WARN” on CONSULT-III screen is touched.
• ACC warning chime sounds when “ACC WARN” on CONSULT-III 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-III screen is touched.
INDICATOR
This test is able to check warning lamp operation.
• “KEY” Warning lamp illuminates when “KEY ON” on CONSULT-III screen is touched.
• “KEY” Warning lamp flashes when “KEY IND” on CONSULT-III 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-III screen is touched.
LCD
This test is able to check meter display information
• Engine start information displays when “BP N” on CONSULT-III screen is touched.
• Engine start information displays when “BP I” on CONSULT-III screen is touched.
• Key ID warning displays when “ID NG” on CONSULT-III screen is touched.
• Steering lock information displays when “ROTAT” on CONSULT-III screen is touched.
• P position warning displays when “SFT P” on CONSULT-III screen is touched.
• Intelligent Key insert information displays when “INSRT” on CONSULT-III screen is touched.
• Intelligent Key low battery warning displays when “BATT” on CONSULT-III screen is touched.
• Take away through window warning displays when “NO KY” on CONSULT-III screen is touched.
• Take away warning display when “OUTKEY” on CONSULT-III screen is touched.
• OFF position warning display when “LK WN” on CONSULT-III screen is touched.
TRUNK/GLASS HATCH
This test is able to check back door opener actuator open operation.
This actuator opens when “ON” on CONSULT-III screen is touched.
FLASHER
This test is able to check hazard warning lamp operation.
The hazard warning lamps will be activated after “ON” on CONSULT-III screen is touched.
HORN
This test is able to check horn operation.
The horn will be activated after “ON” on CONSULT-III screen is touched.
IGN CONT2
This test is able to check ignition relay operation.
The ignition relay will be activated after “ON” on CONSULT-III screen is touched.
P RANGE
This test is able to check control device power supply
Control device power is supplied when “ON” on CONSULT-III 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-III screen is touched.
LOCK INDICATOR
NOTE:
This item is displayed, but cannot be tested.
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< FUNCTION DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
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-III 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-III screen is touched.
KEY SLOT ILLUMI
This test is able to check key slot illumination operation.
Key slot illumination flash when “ON” on CONSULT-III screen is touched.
AUTOMATIC BACK DOOR
NOTE:
This item is displayed, but cannot be tested.
AUTOMATIC SLIDING DOOR
NOTE:
This item is displayed, but cannot be tested.
Test item
Description
Revision: 2008 October
2009 Murano
PCS
U1000 CAN COMM CIRCUIT
PCS-47
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[POWER DISTRIBUTION SYSTEM]
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
BCM
BCM : Description
INFOID:0000000003668888
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:0000000003668889
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000003668890
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-16, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
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
Revision: 2008 October
2009 Murano
PCS-48
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
BCM
BCM : DTC Logic
INFOID:0000000003668894
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000003668895
1.
REPLACE BCM
When DTC “U1010: CONTROL UNIT (CAN)” is detected, replace BCM.
>> Replace BCM. Refer to
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
PCS
B2553 IGNITION RELAY
PCS-49
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2553 IGNITION RELAY
Description
INFOID:0000000003375868
BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned
ON.
• Ignition relay (inside fuse box)
• Ignition relay (inside IPDM E/R)
• Blower relay
BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.
DTC Logic
INFOID:0000000003375869
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-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003375870
1.
CHECK DTC WITH IPDM E/R
Check “Self diagnostic result” with CONSULT-III. 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.
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
Revision: 2008 October
2009 Murano
PCS-50
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B2553 IGNITION RELAY
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-96, "Removal and Installation"
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-34, "Removal and Installation"
.
NO
>> Repair or replace harness.
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M123
123
Ground
Ignition switch
OFF
0
ON
Battery voltage
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: 2008 October
2009 Murano
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