Nissan Murano Z50 (2005 year). Manual - part 120

 

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Nissan Murano Z50 (2005 year). Manual - part 120

 

 

FUEL PUMP CIRCUIT

EC-675

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2005 Murano

12. 

CHECK FUEL PUMP

Refer to 

EC-675, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace fuel pump.

13. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> Replace IPDM E/R.

NG

>> Repair or replace harness or connectors.

Component Inspection

ABS004OO

FUEL PUMP

1.

Disconnect fuel level sensor unit and fuel pump harness connector.

2.

Check resistance between fuel level sensor unit and fuel pump
terminals 1 and 3.

CONDENSER

1.

Turn ignition switch OFF.

2.

Disconnect condenser harness connector.

3.

Check resistance between condenser terminals 1 and 2.

Removal and Installation

ABS004OP

FUEL PUMP

Refer to 

FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

 .

Resistance: Approximately 0.2 - 5.0

Ω

 [at 25

°

C (77

°

F)]

SEC918C

Resistance

Above 1 M

Ω

 at 25

°

C (77

°

F)

PBIB0794E

EC-676

ELECTRONIC CONTROLLED ENGINE MOUNT

Revision: 2005 August

2005 Murano

ELECTRONIC CONTROLLED ENGINE MOUNT

PFP:11270

System Description

ABS004OQ

*: This signal is sent to the ECM through CAN communication line.

The ECM controls the engine mount operation corresponding to the engine speed and the vehicle speed. The
control system has 2-step control [Soft/Hard]

CONSULT-II Reference Value in Data Monitor Mode

ABS004VS

Specification data are reference values.

Sensor

Input Signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed

Engine mount 
control

Electronic controlled engine 
mount

Wheel sensor

Vehicle speed*

Vehicle condition

Engine mount control

Engine speed: Below 950 rpm

Soft

Engine speed: Above 950 rpm

Hard

MONITOR ITEM

CONDITION

SPECIFICATION

ENGINE MOUNT

●

Engine: After warming up

Engine speed: Below 950 rpm

IDLE

Engine speed: Above 950 rpm

TRVL

ELECTRONIC CONTROLLED ENGINE MOUNT

EC-677

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Wiring Diagram

ABS004OS

TBWA0725E

EC-678

ELECTRONIC CONTROLLED ENGINE MOUNT

Revision: 2005 August

2005 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS004OT

1. 

INSPECTION START

Do you have CONSULT-II?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2. 

CHECK OVERALL FUNCTION

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with
CONSULT-II and touch “ON/OFF” on the CONSULT-II screen.

3.

Check that the motor operating sound is heard from front elec-
tronic controlled engine mount for about 0.5 seconds according
to the switching condition of “ENGINE MOUNTING”.

OK or NG

OK

>> INSPECTION END

NG >> GO 

TO 

4.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

44

BR/W

Electronic controlled engine 
mount-1

[Engine is running]

●

Engine speed: Above 950 rpm.

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

For 2 seconds after engine speed is 950 
rpm or less.

0 - 1.0V

[Engine is running]

●

2 seconds after engine speed is 950 rpm or 
less.

2.0 - 3.0V

63

W/R

Electronic controlled engine 
mount-2

[Engine is running]

●

Engine speed: Below 950 rpm.

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

For 2 seconds after engine speed is 950 
rpm or more.

0 - 1.0V

[Engine is running]

●

2 seconds after engine speed is 950 rpm or 
more.

2.0 - 3.0V

SEC237C

ELECTRONIC CONTROLLED ENGINE MOUNT

EC-679

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3. 

CHECK OVERALL FUNCTION

 Without CONSULT-II

1.

Make sure that gear position is P or N.

2.

Start engine and let it idle.

3.

Change the engine speed from idle to more than 1,000 rpm and then return to idle (with vehicle stopped).

4.

Check that the motor operating sound is heard from front electronic controlled engine mount for about 0.5
seconds when changing engine speed.
It is better to hear the operating sound around the left side front wheel house.

OK or NG

OK

>> INSPECTION END

NG >> GO 

TO 

4.

4. 

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front or rear electronic controlled engine mount harness connector.

3.

Check voltage between electronic controlled engine mount ter-
minal 3 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M82, F102

●

10A fuse

●

Harness for open and short between electronic controlled engine mount and battery

>> Repair harness or connectors.

PBIB1373E

Voltage: Battery voltage

SEC920C

EC-680

ELECTRONIC CONTROLLED ENGINE MOUNT

Revision: 2005 August

2005 Murano

6. 

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT OUTPUT SIGNAL CIRCUIT FOR OPEN AND 

SHORT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminals and electronic engine mount terminals as follows.
Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

7. 

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT

Visually check front and rear electronic controlled engine mount.

OK or NG

OK

>> GO TO 8.

NG

>> Replace front or rear electronic controlled engine mount.

8. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

ECM terminal

Front electronic controlled engine mount 

terminal

Rear electronic controlled engine mount 

terminal (AWD models)

44

1

1

63

2

2

Continuity should exist.

REFRIGERANT PRESSURE SENSOR

EC-681

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REFRIGERANT PRESSURE SENSOR

PFP:92136

Component Description

ABS004OU

The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.

PBIB1372E

PBIB2657E

EC-682

REFRIGERANT PRESSURE SENSOR

Revision: 2005 August

2005 Murano

Wiring Diagram

ABS004OV

TBWA0722E

REFRIGERANT PRESSURE SENSOR

EC-683

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Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS004OW

1. 

CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

1.

Start engine and warm it up to normal operating temperature.

2.

Turn A/C switch and blower switch ON.

3.

Check voltage between ECM terminal 70 and ground with CON-
SULT-II or tester.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body.
Refer to 

EC-166, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace ground connections.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

49

R/W

Sensor power supply
(Refrigerant pressure sen-
sor)

[Ignition switch: ON]

Approximately 5V

67

B

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

70

W

Refrigerant pressure sensor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower switch are ON. 
(Compressor operates.)

1.0 - 4.0V

Voltage: 1.0 - 4.0V

PBIB1188E

PBIB1835E

EC-684

REFRIGERANT PRESSURE SENSOR

Revision: 2005 August

2005 Murano

3. 

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect refrigerant pressure sensor harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between refrigerant pressure sensor terminal 1
and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E19, F3

●

Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. 

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E19, F3

●

Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

PBIB1372E

Voltage: Approximately 5V

PBIB0188E

Continuity should exist.

REFRIGERANT PRESSURE SENSOR

EC-685

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7. 

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2.
Refer to Wiring Diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 8.

8. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E19, F3

●

Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

9. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> Replace refrigerant pressure sensor.

NG

>> Repair or replace. 

Removal and Installation

ABS004OX

REFRIGERANT PRESSURE SENSOR

Refer to 

ATC-147, "Removal and Installation of Refrigerant Pressure Sensor"

 .

Continuity should exist.

EC-686

ELECTRICAL LOAD SIGNAL

Revision: 2005 August

2005 Murano

ELECTRICAL LOAD SIGNAL

PFP:25350

Description

ABS004OY

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.

CONSULT-II Reference Value in Data Monitor Mode

ABS004OZ

Specification data are reference values.

Diagnostic Procedure

ABS004P0

1. 

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

1.

Turn ignition switch ON.

2.

Connect CONSULT-II and select "DATA MONITOR" mode.

3.

Select "LOAD SIGNAL" and check indication under the following
conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 4.

2. 

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

Check "LOAD SIGNAL" indication under the following conditions.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

MONITOR ITEM

CONDITION

SPECIFICATION

LOAD SIGNAL

●

Ignition switch: ON

Rear window defogger switch is ON 
and/or lighting switch is in 2nd.

ON

Rear window defogger switch is OFF 
and lighting switch is OFF.

OFF

HEATER FAN SW

●

Engine: After warming up, idle 
the engine

Heater fan: Operating

ON

Heater fan: Not operating

OFF

Condition

Indication

Rear window defogger switch: ON

ON

Rear window defogger switch: OFF

OFF

PBIB0103E

Condition

Indication

Lighting switch ON at 2nd position

ON

Lighting switch OFF

OFF

PBIB0103E

ELECTRICAL LOAD SIGNAL

EC-687

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3. 

CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION

 With CONSULT-II

Check “HEATER FAN SW” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.

OK or NG

OK

>> INSPECTION END.

NG

>> GO TO 6.

4. 

CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to 

GW-75, "REAR WINDOW DEFOGGER"

  .

>> INSPECTION END

5. 

CHECK HEADLAMP SYSTEM

Refer to 

LT-6, "HEADLAMP - XENON TYPE -"

   or 

LT-39, "HEADLAMP -CONVENTIONAL TYPE-"

  .

>> INSPECTION END

6. 

CHECK HEATER FAN CONTROL SYSTEM

Refer to 

ATC-35, "TROUBLE DIAGNOSIS"

  .

>> INSPECTION END

Condition

LOAD SIGNAL

Heater fan control switch: ON

ON

Heater fan control switch: OFF

OFF

PBIB1995E

EC-688

ASCD BRAKE SWITCH

Revision: 2005 August

2005 Murano

ASCD BRAKE SWITCH

PFP:25320

Component Description

ABS004P1

When the brake pedal is depressed, ASCD brake switch is turned
OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to 

EC-28, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

ABS004VT

Specification data are reference values.

PBIB1368E

MONITOR ITEM

CONDITION

SPECIFICATION

BRAKE SW1
(ASCD brake switch)

●

Ignition switch: ON

Brake pedal: Fully released

ON

Brake pedal: Slightly depressed

OFF

BRAKE SW2
(stop lamp switch)

●

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

ASCD BRAKE SWITCH

EC-689

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2005 Murano

Wiring Diagram

ABS004VU

TBWB0289E

EC-690

ASCD BRAKE SWITCH

Revision: 2005 August

2005 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS004P4

1. 

CHECK OVERALL FUNCTION-I

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.

3.

Check “BRAKE SW1” indication under the following conditions.

 Without CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 108 and ground under the
following conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

101

R/G

Stop lamp switch

[Ignition switch: OFF]

●

Brake pedal: Fully released

Approximately 0V

[Ignition switch: OFF]

●

Brake pedal: Depressed

BATTERY VOLTAGE
(11 - 14V)

108

L/B

ASCD brake switch

[Ignition switch: ON]

●

Brake pedal: Depressed

Approximately 0V

[Ignition switch: ON]

●

Brake pedal: Fully released

BATTERY VOLTAGE
(11 - 14V)

CONDITION

INDICATION

Brake pedal: Slightly depressed

OFF

Brake pedal: Fully released

ON

SEC011D

CONDITION

VOLTAGE

Brake pedal: Slightly depressed

Approximately 0V

Brake pedal: Fully released

Battery voltage

MBIB0061E

 

 

 

 

 

 

 

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