Content .. 275 276 277 278 ..

Nissan Murano Z51 (2008 year). Manual - part 277

PCS

RELAY CONTROL SYSTEM

PCS-3

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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

•

EXL-8

(Xenon headlamp)

•

EXL-191

(Halogen headlamp)

Front fog lamp relay

Front fog light request signal

BCM (CAN)

Front fog lamp

•

EXL-15

(Xenon headlamp)

•

EXL-195

(Halogen headlamp)

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• Side marker lamp
• License plate lamp
• Tail lamp

•

EXL-19

(Xenon headlamp)

•

EXL-199

(Halogen headlamp)

Illuminations

INL-11

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-5

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)

•

SEC-23

(With Intelligent Key
system)

•

SEC-253

(Without Intelligent
Key system)

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

•

SEC-111

•

SEC-109

(With Intelligent Key
system)

•

SEC-337

•

SEC-335

(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

•

SEC-77

(With Intelligent Key
system)

•

SEC-303

(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)

•

HAC-11

(Without 7 inch dis-
play)

•

HAC-130

(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-

EC-60

Ignition relay

Ignition switch ON signal

BCM (CAN)

Ignition relay

PCS-16

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

< FUNCTION DIAGNOSIS >

[IPDM E/R]

Component Parts Location

INFOID:0000000003420422

IPDM E/R

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

CHG-7,

"System Diagram"

JPMIA0908GB

Revision: 2008 October

2009 Murano

PCS

SIGNAL BUFFER SYSTEM

PCS-7

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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-

tem Diagram"

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

< FUNCTION DIAGNOSIS >

[IPDM E/R]

Component Parts Location

INFOID:0000000003470221

Combination meter

IPDM E/R

BCM

Driver seat control unit

Automatic back door control unit

Engine room (LH)

Behind of combination meter

Backside of the seat cushion (driver
seat)

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

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.

Turn the ignition switch OFF.

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.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.

The oil pressure warning lamp starts blinking when the auto active test starts.

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

DLK-411,

"Component Function Check"

• 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

Oil pressure warning lamp

Blinks continuously during operation of auto active test

Front wiper

LO for 5 seconds

→

HI for 5 seconds

• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps

10 seconds

Headlamps

⇔

HI 5 times

A/C compressor (magnet clutch)

⇔

OFF 5 times

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]

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

• 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

• 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

• 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

Refer to

PCS-32, "DTC Index"

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

• 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]

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.

HORN

Operates horn relay for 20 ms.

FRONT WIPER

Off

OFF

Operates the front wiper relay.

Operates the front wiper relay and front wiper high relay.

MOTOR FAN

OFF

Operates the cooling fan relay-1.

Operates the cooling fan relay-2.

Operates the cooling fan relay-2 and cooling fan relay-3.

HEAD LAMP WASHER

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.

Operates the headlamp low relay.

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]

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

PERFORM SELF DIAGNOSTIC

Turn the ignition switch ON and wait for 2 seconds or more.

Check “Self Diagnostic Result” of IPDM E/R.

Is DTC “U1000” displayed?

YES

>> Refer to

LAN-16, "Trouble Diagnosis Flow Chart"

>> 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

PERFORM SELF DIAGNOSIS

Turn the ignition switch ON.

Erase “Self Diagnostic Result” of IPDM E/R.

Turn the ignition switch OFF, and wait for 1 second or more.

Turn the ignition switch ON. Check “Self Diagnostic Result” again.

Is DTC “B2098” displayed?

YES

>> Replace IPDM E/R.

>> 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]

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)

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

PERFORM SELF DIAGNOSIS

Turn the ignition switch ON.

Erase “Self Diagnostic Result”.

Turn the ignition switch OFF.

Turn the ignition switch ON. Check “Self Diagnostic Result” again.

Is DTC “B2099” displayed?

YES

>> Replace IPDM E/R.

>> 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

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.

>> GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Turn the ignition switch OFF.

Disconnect IPDM E/R connector.

Check voltage between IPDM E/R harness connector and the ground.

Is the measurement value normal?

YES

>> GO TO 3.

>> Repair the harness or connector.

CHECK GROUND CIRCUIT

Check continuity between IPDM E/R harness connectors and the ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair the harness or connector.

Signal name

Fuses and fusible link No.

Battery power supply

Terminals

Voltage

(Approx.)

(+)

(

−

)

IPDM E/R

Connector

Terminal

Ground

Battery voltage

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

Existed

E11

Revision: 2008 October

2009 Murano

Content .. 275 276 277 278 ..