Nissan Murano Z51 (2008 year). Manual - part 142

EC-88

< FUNCTION DIAGNOSIS >

[VQ35DE]

INTAKE VALVE TIMING CONTROL

Component Parts Location

INFOID:0000000003573792

1.

Intake valve timing control solenoid 
valve (bank 1)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Electronic controlled engine mount 
control solenoid valve

4.

Fuel injector (bank 2)

5.

A/F sensor 1 (bank 2)

6.

Cooling fan motor-2

7.

Ignition coil (with power transistor) 
and spark plug (bank 2)

8.

Camshaft position sensor (PHASE) 
(bank 2)

9.

Crankshaft position sensor (POS)

10. Engine coolant temperature sensor

11.

Cooling fan motor-1

12. ECM

13. Refrigerant pressure sensor

14. Battery current sensor

15. IPDM E/R

16. Mass air flow sensor (with intake air 

temperature sensor)

17. Electric throttle control actuator

18. EVAP service port

19. Power valve actuator 2

20. EVAP canister purge volume control 

solenoid valve

21. Camshaft position sensor (PHASE) 

(bank 1)

22. Ignition coil (with power transistor) 

and spark plug (bank 1)

23. A/F sensor 1 (bank 1)

24. Fuel injector (bank 1)

25. VIAS control solenoid valve 1 and 2

26. Power valve actuator 1

JMBIA1108ZZ

Revision: 2008 October

2009 Murano

INTAKE VALVE TIMING CONTROL

EC-89

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1.

Mas air flow sensor (with intake air 
temperature sensor)

2.

Electric throttle control actuator

: Vehicle front

1.

Ignition coil (with power transistor) 
and spark plug (bank 1)

2.

Fuel injector (bank 1)

3.

Fuel injector (bank 2)

4.

Ignition coil (with power transistor) 
and spark plug (bank 2)

5.

Knock sensor (bank 2)

6.

Knock sensor (bank 1)

: Vehicle front

1.

Crankshaft position sensor (POS)

2.

Camshaft position sensor (PHASE) 
(bank 1)

3.

Camshaft position sensor (PHASE) 
(bank 2)

: Vehicle front

JMBIA1109ZZ

JMBIA1110ZZ

JMBIA1114ZZ

Revision: 2008 October

2009 Murano

EC-90

< FUNCTION DIAGNOSIS >

[VQ35DE]

INTAKE VALVE TIMING CONTROL

1.

Cooling fan motor-1

2.

Cooling fan motor-1 harness con-
nector

3.

Cooling fan motor-1 harness con-
nector

4.

Cooling fan motor-2

5.

Engine coolant temperature sensor

: Vehicle front

1.

Refrigerant pressure sensor

2.

Battery current sensor

: Vehicle front

1.

ECM

2.

IPDM E/R

3.

Fuel pump fuse

: Vehicle front

JMBIA1112ZZ

JMBIA1113ZZ

JMBIA1115ZZ

Revision: 2008 October

2009 Murano

INTAKE VALVE TIMING CONTROL

EC-91

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JMBIA1832GB

1.

A/F sensor 1 (bank 1) harness con-
nector

2.

A/F sensor 1 (bank 1)

3.

A/F sensor 1 (bank 2) harness con-
nector

4.

A/F sensor 1 (bank 2)

: Vehicle front

1.

HO2S2 (bank 1)

2.

HO2S2 (bank 2)

3.

HO2S2 (bank 2) harness connector

4.

HO2S2 (bank 1) harness connector

5.

Power steering pressure sensor

6.

Drive shaft (RH)

: Vehicle front

JMBIA1116ZZ

JMBIA1117ZZ

Revision: 2008 October

2009 Murano

EC-92

< FUNCTION DIAGNOSIS >

[VQ35DE]

INTAKE VALVE TIMING CONTROL

1.

Electronic controlled engine mount 
control solenoid valve

2.

VIAS control solenoid valve 1

3.

VIAS control solenoid valve 2

4.

EVAP canister purge volume control 
solenoid valve

5.

EVAP service port

6.

EVAP control system pressure sen-
sor

7.

EVAP canister vent control valve

8.

EVAP canister

: Vehicle front

1.

Intake valve timing control solenoid 
valve (bank 1)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Data link connector

1.

Stop lamp switch

2.

ASCD brake switch

3.

Accelerator pedal position sensor

JMBIA1111ZZ

JMBIA1118ZZ

JMBIA1119ZZ

JMBIA1120ZZ

Revision: 2008 October

2009 Murano

INTAKE VALVE TIMING CONTROL

EC-93

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Component Description

INFOID:0000000003387921

1.

ASCD steering switch

2.

CANSEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

1.

Fuel level sensor unit and fuel pump 
harness connector

2.

Fuel level sensor unit and fuel pump 3.

Fuel pressure regulator

: Vehicle front

JMBIA1121ZZ

Component

Reference

Camshaft position sensor (PHASE)

EC-264, "Description"

Crankshaft position sensor (POS)

EC-260, "Description"

Engine coolant temperature sensor

EC-170, "Description"

Engine oil temperature sensor

EC-242, "Description"

Intake valve timing control solenoid valve

EC-151, "Description"

Revision: 2008 October

2009 Murano

EC-94

< FUNCTION DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

VARIABLE INDUCTION AIR SYSTEM

System Diagram

INFOID:0000000003387922

System Description

INFOID:0000000003387923

INPUT/OUTPUT SIGNAL CHART

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

In the medium speed range, the ECM sends the ON signal to the VIAS control solenoid valve. This signal
introduces the intake manifold vacuum into the power valve actuator and therefore closes the power valve.

JMBIA1831GB

Sensor

Input signal to ECM

ECM function

Actuator

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

Engine speed*

VIAS control

VIAS control solenoid valve 1
VIAS control solenoid valve 2

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Battery

Battery voltage*

JMBIA0181GB

Revision: 2008 October

2009 Murano

VARIABLE INDUCTION AIR SYSTEM

EC-95

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Under this condition, the pressure waves of the exhaust stroke do not disturb the pressure waves of the intake
stroke of each opposite bank. Therefore, charging efficiency is increased together with the effect of the long
intake passage.
However, in the high speed range, the ECM sends the OFF signal to the VIAS control solenoid valve and the
power valve is opened. Under this condition, the pressure waves of intake stroke are resonant with those of
each opposite bank exhaust stroke. Therefore, charging efficiency is also increased.
In addition, both valves 1 and 2 are opened or closed in other ranges mentioned above. Thus maximum
charging efficiency is obtained for the various driving conditions.

VACUUM HOSE DRAWING

1.

Power valve actuator 1

2.

VIAS control solenoid valve 1

3.

VIAS control solenoid valve 2

4.

Power valve actuator 2

5.

Intake manifold collector

JMBIA0172ZZ

Revision: 2008 October

2009 Murano

EC-96

< FUNCTION DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

Component Parts Location

INFOID:0000000003573795

1.

Intake valve timing control solenoid 
valve (bank 1)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Electronic controlled engine mount 
control solenoid valve

4.

Fuel injector (bank 2)

5.

A/F sensor 1 (bank 2)

6.

Cooling fan motor-2

7.

Ignition coil (with power transistor) 
and spark plug (bank 2)

8.

Camshaft position sensor (PHASE) 
(bank 2)

9.

Crankshaft position sensor (POS)

10. Engine coolant temperature sensor

11.

Cooling fan motor-1

12. ECM

13. Refrigerant pressure sensor

14. Battery current sensor

15. IPDM E/R

16. Mass air flow sensor (with intake air 

temperature sensor)

17. Electric throttle control actuator

18. EVAP service port

19. Power valve actuator 2

20. EVAP canister purge volume control 

solenoid valve

21. Camshaft position sensor (PHASE) 

(bank 1)

22. Ignition coil (with power transistor) 

and spark plug (bank 1)

23. A/F sensor 1 (bank 1)

24. Fuel injector (bank 1)

25. VIAS control solenoid valve 1 and 2

26. Power valve actuator 1

JMBIA1108ZZ

Revision: 2008 October

2009 Murano

VARIABLE INDUCTION AIR SYSTEM

EC-97

< FUNCTION DIAGNOSIS >

[VQ35DE]

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1.

Mas air flow sensor (with intake air 
temperature sensor)

2.

Electric throttle control actuator

: Vehicle front

1.

Ignition coil (with power transistor) 
and spark plug (bank 1)

2.

Fuel injector (bank 1)

3.

Fuel injector (bank 2)

4.

Ignition coil (with power transistor) 
and spark plug (bank 2)

5.

Knock sensor (bank 2)

6.

Knock sensor (bank 1)

: Vehicle front

1.

Crankshaft position sensor (POS)

2.

Camshaft position sensor (PHASE) 
(bank 1)

3.

Camshaft position sensor (PHASE) 
(bank 2)

: Vehicle front

JMBIA1109ZZ

JMBIA1110ZZ

JMBIA1114ZZ

Revision: 2008 October

2009 Murano

EC-98

< FUNCTION DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

1.

Cooling fan motor-1

2.

Cooling fan motor-1 harness con-
nector

3.

Cooling fan motor-1 harness con-
nector

4.

Cooling fan motor-2

5.

Engine coolant temperature sensor

: Vehicle front

1.

Refrigerant pressure sensor

2.

Battery current sensor

: Vehicle front

1.

ECM

2.

IPDM E/R

3.

Fuel pump fuse

: Vehicle front

JMBIA1112ZZ

JMBIA1113ZZ

JMBIA1115ZZ

Revision: 2008 October

2009 Murano

VARIABLE INDUCTION AIR SYSTEM

EC-99

< FUNCTION DIAGNOSIS >

[VQ35DE]

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JMBIA1832GB

1.

A/F sensor 1 (bank 1) harness con-
nector

2.

A/F sensor 1 (bank 1)

3.

A/F sensor 1 (bank 2) harness con-
nector

4.

A/F sensor 1 (bank 2)

: Vehicle front

1.

HO2S2 (bank 1)

2.

HO2S2 (bank 2)

3.

HO2S2 (bank 2) harness connector

4.

HO2S2 (bank 1) harness connector

5.

Power steering pressure sensor

6.

Drive shaft (RH)

: Vehicle front

JMBIA1116ZZ

JMBIA1117ZZ

Revision: 2008 October

2009 Murano

EC-100

< FUNCTION DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

1.

Electronic controlled engine mount 
control solenoid valve

2.

VIAS control solenoid valve 1

3.

VIAS control solenoid valve 2

4.

EVAP canister purge volume control 
solenoid valve

5.

EVAP service port

6.

EVAP control system pressure sen-
sor

7.

EVAP canister vent control valve

8.

EVAP canister

: Vehicle front

1.

Intake valve timing control solenoid 
valve (bank 1)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Data link connector

1.

Stop lamp switch

2.

ASCD brake switch

3.

Accelerator pedal position sensor

JMBIA1111ZZ

JMBIA1118ZZ

JMBIA1119ZZ

JMBIA1120ZZ

Revision: 2008 October

2009 Murano

VARIABLE INDUCTION AIR SYSTEM

EC-101

< FUNCTION DIAGNOSIS >

[VQ35DE]

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Component Description

INFOID:0000000003387925

1.

ASCD steering switch

2.

CANSEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

1.

Fuel level sensor unit and fuel pump 
harness connector

2.

Fuel level sensor unit and fuel pump 3.

Fuel pressure regulator

: Vehicle front

JMBIA1121ZZ

Component

Reference

Accelerator pedal position sensor

EC-413, "Description"

Camshaft position sensor (PHASE)

EC-264, "Description"

Crankshaft position sensor (POS)

EC-260, "Description"

Engine coolant temperature sensor

EC-170, "Description"

Mass air flow sensor

EC-154, "Description"

Power valve 1 and 2

EC-466, "Description"

Throttle position sensor

EC-175, "Description"

VIAS control solenoid valve 1

EC-393, "Description"

VIAS control solenoid valve 2

EC-396, "Description"

Revision: 2008 October

2009 Murano

EC-102

< FUNCTION DIAGNOSIS >

[VQ35DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

INFOID:0000000003387926

INTRODUCTION

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:

The above information can be checked using procedures listed in the table below.

×

: Applicable

—: Not applicable

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator lamp (MIL) on the instrument panel illuminates when the same malfunction is
detected in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to

EC-517, "Fail-safe"

.)

TWO TRIP DETECTION LOGIC

When a malfunction is detected for the 1st time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not illuminate at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL illuminates. The MIL illuminates at the same time when the DTC is stored.
<2nd trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is per-
formed during vehicle operation. Specific on board diagnostic items will cause the ECM to illuminate or blink
the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

×

: Applicable

—: Not applicable

DTC AND FREEZE FRAME DATA

DTC and 1st Trip DTC

Emission-related diagnostic information

Diagnostic service

Diagnostic Trouble Code (DTC)

Service $03 of SAE J1979

Freeze Frame data

Service $02 of SAE J1979

System Readiness Test (SRT) code

Service $01 of SAE J1979

1st Trip Diagnostic Trouble Code (1st Trip DTC)

Service $07 of SAE J1979

1st Trip Freeze Frame data

—

Test values and Test limits

Service $06 of SAE J1979

Calibration ID

Service $09 of SAE J1979

DTC

1st trip DTC

Freeze 

Frame data

1st trip Freeze 

Frame data

SRT code

SRT status

Test value

CONSULT-III

×

×

×

×

×

×

—

GST

×

×

×

—

×

×

×

ECM

×

×

*

—

—

—

×

—

Items

MIL

DTC

1st trip DTC

1st trip

2nd trip 

1st trip 

displaying

2nd trip 

displaying

1st trip 

displaying

2nd trip 

display-

ing

Blinking

illuminate

Blinking

illuminate

Misfire (Possible three way catalyst 
damage) — DTC: P0300 - P0306 is 
being detected

×

—

—

—

—

—

×

—

Misfire (Possible three way catalyst 
damage) — DTC: P0300 - P0306 is 
being detected

—

—

×

—

—

×

—

—

One trip detection diagnoses (Re-
fer to 

EC-521, "DTC Index"

.)

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—

Revision: 2008 October

2009 Murano

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-103

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The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not recur, the 1st trip DTC
will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is saved in the ECM memory. The MIL will not
illuminate (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL illuminates. In other
words, the DTC is stored in the ECM memory and the MIL illuminates when the same malfunction occurs in
two consecutive trips. If a 1st trip DTC is saved and a non-diagnostic operation is performed between the 1st
and 2nd trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or illuminate the MIL
during the 1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in “How to Erase
DTC and 1st Trip DTC”.
For malfunctions in which 1st trip DTCs are displayed, refer to 

EC-521, "DTC Index"

. These items are

required by legal regulations to continuously monitor the system/component. In addition, the items monitored
non-continuously are also displayed on CONSULT-III.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without illuminating the
MIL and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent
the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to 

EC-8, "Work Flow"

. Then perform DTC Confirmation

Procedure or Component Function Check to try to duplicate the malfunction. If the malfunction is duplicated,
the item requires repair.

Freeze Frame Data and 1st Trip Freeze Frame Data

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was saved in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in “How to Erase DTC and 1st Trip
DTC”.

How to Read DTC and 1st Trip DTC

 With CONSULT-III

CONSULT-III displays the DTC in “SELF DIAGNOSTIC RESULT” mode. Examples: P0340, P0850, P1148,
etc.
These DTCs are prescribed by SAE J2012.

Priority

Items

1

Freeze frame data

Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175

2

Except the above items (Includes CVT related items)

3

1st trip freeze frame data

Revision: 2008 October

2009 Murano