Nissan Murano Z51 (2008 year). Manual — part 277
PCS
RELAY CONTROL SYSTEM
PCS-3
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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FUNCTION DIAGNOSIS
RELAY CONTROL SYSTEM
System Diagram
INFOID:0000000003420420
System Description
INFOID:0000000003420421
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.
JPMIA0861GB
Revision: 2008 October
2009 Murano
PCS-4
< FUNCTION DIAGNOSIS >
[IPDM E/R]
RELAY CONTROL SYSTEM
NOTE:
BCM controls the starter relay.
Control relay
Input/output
Transmit unit
Control part
Reference page
• Headlamp low relay
• Headlamp high relay
• Low beam request signal
• High beam request signal
BCM (CAN)
• Headlamp low
• Headlamp high
•
(Xenon headlamp)
•
(Halogen headlamp)
Front fog lamp relay
Front fog light request signal
BCM (CAN)
Front fog lamp
•
(Xenon headlamp)
•
(Halogen headlamp)
Tail lamp relay
Position light request signal
BCM (CAN)
• Parking lamp
• Side marker lamp
• License plate lamp
• Tail lamp
•
(Xenon headlamp)
•
(Halogen headlamp)
Illuminations
• Front wiper relay
• Front wiper high relay
Front wiper request signal
BCM (CAN)
Front wiper
Front wiper stop position sig-
nal
Front wiper motor
Horn relay
• Theft warning horn request
signal
• Horn reminder signal
BCM (CAN)
• Horn (low)
• Horn (high)
•
(With Intelligent Key
system)
•
(Without Intelligent
Key system)
• Starter relay
NOTE
• Starter control relay
Starter control relay signal
BCM (CAN)
Starter motor
•
•
(With Intelligent Key
system)
•
•
(Without Intelligent
Key system)
Steering lock unit condition
signal
Steering lock unit
Starter relay control signal
TCM
Steering lock relay
Steering lock relay signal
BCM (CAN)
Steering lock unit
•
(With Intelligent Key
system)
•
(Without Intelligent
Key system)
Steering lock unit condition
signal
Steering lock unit
Control device (Detention
switch) signal
Control device (Detention
switch)
A/C relay
A/C compressor request sig-
nal
ECM (CAN)
A/C compressor
(magnet clutch)
•
(Without 7 inch dis-
play)
•
(With 7 inch display)
• Cooling fan relay-1
• Cooling fan relay-2
• Cooling fan relay-3
Cooling fan speed request sig-
nal
ECM (CAN)
• Cooling fan motor-
1
• Cooling fan motor-
2
Ignition relay
Ignition switch ON signal
BCM (CAN)
Ignition relay
Vehicle speed signal
Combination meter (CAN)
Push-button ignition switch
signal
Push-button ignition
switch
Revision: 2008 October
2009 Murano
PCS
RELAY CONTROL SYSTEM
PCS-5
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[IPDM E/R]
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Component Parts Location
INFOID:0000000003420422
1.
IPDM E/R
A.
Engine room (LH)
JPMIA0870ZZ
Revision: 2008 October
2009 Murano
PCS-6
< FUNCTION DIAGNOSIS >
[IPDM E/R]
POWER CONTROL SYSTEM
POWER CONTROL SYSTEM
System Diagram
INFOID:0000000003420423
System Description
INFOID:0000000003420424
ALTERNATOR CONTROL
IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of
the power generation command value signal received from ECM via CAN communication. Refer to
.
JPMIA0908GB
Revision: 2008 October
2009 Murano
PCS
SIGNAL BUFFER SYSTEM
PCS-7
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000003420426
System Description
INFOID:0000000003420427
• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via
CAN communication. Refer to
MWI-22, "WARNING LAMPS/INDICATOR LAMPS : System Diagram"
• IPDM E/R receives the rear window defogger control signal from BCM via CAN communication and trans-
mits it to ECM and AV control unit via CAN communication. Refer to
DEF-4, "WITH BOSE SYSTEM : Sys-
.
JPMIA0862GB
Revision: 2008 October
2009 Murano
PCS-8
< FUNCTION DIAGNOSIS >
[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM
System Diagram
INFOID:0000000003470220
System Description
INFOID:0000000003420430
OUTLINE
• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-
ing to the vehicle status.
• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-
munication.
Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.
SLEEP MODE ACTIVATION
• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the
conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.
- Outputting signals to actuators
- Switches or relays operating
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep
wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
WAKE-UP OPERATION
• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep
wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
- Ignition switch ON
- An output request is received from a control unit via CAN communication.
JPMIA0906GB
Revision: 2008 October
2009 Murano
PCS
POWER CONSUMPTION CONTROL SYSTEM
PCS-9
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[IPDM E/R]
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Component Parts Location
INFOID:0000000003470221
1.
Combination meter
2.
IPDM E/R
3.
BCM
4.
Driver seat control unit
5.
Automatic back door control unit
A.
Engine room (LH)
B.
Behind of combination meter
C.
Backside of the seat cushion (driver
seat)
D.
Dash side lower (Passenger side)
JPMIA0899ZZ
Revision: 2008 October
2009 Murano
PCS-10
< FUNCTION DIAGNOSIS >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000003420432
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp
• Front wiper (LO, HI)
• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps
• Headlamps (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan
Operation Procedure
1.
Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2.
Turn the ignition switch OFF.
3.
Turn the ignition switch ON, and within 20 seconds, press the front door switch (driver side) 10 times.
Then turn the ignition switch OFF.
CAUTION:
Close passenger door.
4.
Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5.
The oil pressure warning lamp starts blinking when the auto active test starts.
6.
After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn the ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actuated, check door switch system. Refer to
.
• Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.
Operation
sequence
Inspection location
Operation
1
Oil pressure warning lamp
Blinks continuously during operation of auto active test
2
Front wiper
LO for 5 seconds
→
HI for 5 seconds
3
• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps
10 seconds
4
Headlamps
LO
⇔
HI 5 times
5
A/C compressor (magnet clutch)
ON
⇔
OFF 5 times
6
Cooling fan
LO for 5 seconds
→
MID for 3 seconds
→
HI for 2 seconds
Revision: 2008 October
2009 Murano
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-11
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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Concept of auto active test
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
JPMIA0909GB
Symptom
Inspection contents
Possible cause
Any of the following components do not operate
• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps
• Headlamp (HI, LO)
• Front wiper (HI, LO)
Perform auto active test.
Does the applicable system
operate?
YES
BCM signal input circuit
NO
• Lamp or motor
• Lamp or motor ground cir-
cuit
• Harness or connector be-
tween IPDM E/R and appli-
cable system
• IPDM E/R
A/C compressor does not operate
Perform auto active test.
Does the magnet clutch oper-
ate?
YES
• A/C amp. signal input circuit
• CAN communication signal
between A/C amp. and
ECM
• CAN communication signal
between ECM and IPDM E/
R
NO
• Magnet clutch
• Harness or connector be-
tween IPDM E/R and mag-
net clutch
• IPDM E/R
Oil pressure warning lamp does not operate
Perform auto active test.
Does the oil pressure warning
lamp blink?
YES
• Harness or connector be-
tween IPDM E/R and oil
pressure switch
• Oil pressure switch
• IPDM E/R
NO
• CAN communication signal
between IPDM E/R and
BCM
• CAN communication signal
between BCM and combi-
nation meter
• Combination meter
Revision: 2008 October
2009 Murano
PCS-12
< FUNCTION DIAGNOSIS >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT-III Function (IPDM E/R)
INFOID:0000000003420433
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
DATA MONITOR
Monitor item
Cooling fan does not operate
Perform auto active test.
Does the cooling fan operate?
YES
• ECM signal input circuit
• CAN communication signal
between ECM and IPDM E/
R
NO
• Harness or connector be-
tween IPDM E/R and cool-
ing fan motor
• Harness or connector be-
tween IPDM E/R and cool-
ing fan relay
• Cooling fan motor
• Cooling fan relay
• IPDM E/R
Symptom
Inspection contents
Possible cause
Diagnosis mode
Description
Ecu Identification
Allows confirmation of IPDM E/R part number.
Self Diagnostic Result
Displays the diagnosis results judged by IPDM E/R.
Data Monitor
Displays the real-time input/output data from IPDM E/R input/output data.
Active Test
IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
MOTOR FAN REQ
[1/2/3/4]
×
Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On]
×
Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TAIL&CLR REQ
[Off/On]
×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On]
×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On]
×
Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On]
×
Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi]
×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P]
×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK]
×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On]
Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
Revision: 2008 October
2009 Murano
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-13
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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ACTIVE TEST
Test item
IGN RLY
[Off/On]
×
Displays the status of the ignition relay judged by IPDM E/R.
PUSH SW
[Off/On]
Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On]
Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On]
Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On]
Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN]
Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On]
Displays the status of the control device (detention switch) judged by IPDM E/R.
S/L RLY -REQ
[Off/On]
Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLOCK/UNKWN]
Displays the status of the steering lock judged by IPDM E/R.
DTRL REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
OIL P SW
[Open/Close]
Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On]
NOTE:
The item is indicated, but not monitored.
HL WASHER REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
THFT HRN REQ
[Off/On]
Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On]
Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
CRNRNG LMP REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
Test item
Operation
Description
CORNERING LAMP
Off
NOTE:
The item is indicated, but cannot be tested.
LH
RH
HORN
On
Operates horn relay for 20 ms.
FRONT WIPER
Off
OFF
Lo
Operates the front wiper relay.
Hi
Operates the front wiper relay and front wiper high relay.
MOTOR FAN
1
OFF
2
Operates the cooling fan relay-1.
3
Operates the cooling fan relay-2.
4
Operates the cooling fan relay-2 and cooling fan relay-3.
HEAD LAMP WASHER
On
NOTE:
The item is indicated, but cannot be tested.
Revision: 2008 October
2009 Murano
PCS-14
< FUNCTION DIAGNOSIS >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
EXTERNAL LAMPS
Off
OFF
TAIL
Operates the tail lamp relay.
Lo
Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog
Operates the front fog lamp relay.
Test item
Operation
Description
Revision: 2008 October
2009 Murano
PCS
U1000 CAN COMM CIRCUIT
PCS-15
< COMPONENT DIAGNOSIS >
[IPDM E/R]
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003420434
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"
DTC Logic
INFOID:0000000003420435
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003420436
1.
PERFORM SELF DIAGNOSTIC
1.
Turn the ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of IPDM E/R.
Is DTC “U1000” 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 IPDM E/R cannot communicate CAN
communication signal continuously for 2
seconds or more
CAN communication system
Revision: 2008 October
2009 Murano
PCS-16
< COMPONENT DIAGNOSIS >
[IPDM E/R]
B2098 IGNITION RELAY ON STUCK
B2098 IGNITION RELAY ON STUCK
Description
INFOID:0000000003420437
• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-
munication.
• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/
h (2.5 MPH) or less.
• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5
MPH) or when an abnormal condition occurs in CAN communication from the combination meter (Emer-
gency OFF)
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times within 1.5 seconds.
NOTE:
The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch
is pressed.
DTC Logic
INFOID:0000000003420438
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003420439
1.
PERFORM SELF DIAGNOSIS
1.
Turn the ignition switch ON.
2.
Erase “Self Diagnostic Result” of IPDM E/R.
3.
Turn the ignition switch OFF, and wait for 1 second or more.
4.
Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is DTC “B2098” displayed?
YES
>> Replace IPDM E/R.
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DTC
CONSULT-III dis-
play description
DTC Detection Condition
Possible causes
B2098
IGN RELAY ON
The ignition relay ON is detected for 1 second at ignition switch OFF
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)
Ignition relay malfunction
Revision: 2008 October
2009 Murano
PCS
B2099 IGNITION RELAY OFF STUCK
PCS-17
< COMPONENT DIAGNOSIS >
[IPDM E/R]
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B2099 IGNITION RELAY OFF STUCK
Description
INFOID:0000000003470276
• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-
munication.
• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/
h (2.5 MPH) or less.
• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5
MPH) or when an abnormal condition occurs in CAN communication from the combination meter (Emer-
gency OFF)
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times within 1.5 seconds.
NOTE:
The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch
is pressed.
DTC Logic
INFOID:0000000003420441
DTC DETECTION LOGIC
NOTE:
When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the “DTC: B2099” may be detected.
Diagnosis Procedure
INFOID:0000000003420442
1.
PERFORM SELF DIAGNOSIS
1.
Turn the ignition switch ON.
2.
Erase “Self Diagnostic Result”.
3.
Turn the ignition switch OFF.
4.
Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is DTC “B2099” displayed?
YES
>> Replace IPDM E/R.
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DTC
CONSULT-III dis-
play description
DTC Detection Condition
Possible causes
B2099
IGN RELAY OFF
The ignition relay OFF is detected for 1 second at ignition switch ON
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)
Ignition relay malfunction
Revision: 2008 October
2009 Murano
PCS-18
< COMPONENT DIAGNOSIS >
[IPDM E/R]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000003420443
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible links are not blown.
Is the fuse fusing?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Check voltage between IPDM E/R harness connector and the ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair the harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and the ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair the harness or connector.
Signal name
Fuses and fusible link No.
Battery power supply
E
50
51
Terminals
Voltage
(Approx.)
(+)
(
−
)
IPDM E/R
Connector
Terminal
Ground
E9
1
Battery voltage
IPDM E/R
Ground
Continuity
Connector
Terminal
E10
12
Existed
E11
41
Revision: 2008 October
2009 Murano
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