Nissan Murano. Manual - part 590

EC-470

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

 Without CONSULT

1.

Stop engine and disconnect vacuum hose connected to power valve actuator 1.

2.

Disconnect VIAS control solenoid valve 1 harness connector.

3.

Start engine.

4.

Rev engine quickly up to approximately 5,000 rpm.

5.

Check vacuum existence under the following conditions.

Is the inspection result normal?

YES

>> Repair or replace power valve actuator 1. Refer to 

EC-36, "Component Parts Location"

.

NO

>> GO TO 3.

3.

CHECK VACUUM TANK

1.

Stop engine and disconnect vacuum hose connected to intake manifold collector.

2.

Start engine and let it idle.

3.

Check vacuum existence from intake manifold collector.

Does vacuum existence from the intake manifold collector?

YES

>> GO TO 4.

NO

>> Replace intake manifold collector. Refer to 

EM-33, "Exploded View"

.

4.

CHECK VACUUM HOSE

1.

Stop engine.

2.

Check vacuum hose for crack, clogging, improper connection or
disconnection. Refer to 

EC-110, "System Diagram"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair hoses or tubes.

5.

CHECK VIAS CONTROL SOLENOID VALVE 1

Refer to 

EC-395, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace VIAS control solenoid valve 1. Refer to 

EM-33, "Exploded View"

.

6.

CHECK VACUUM EXISTENCE-II

 With CONSULT

1.

Stop engine and disconnect vacuum hose connected to power valve actuator 2.

2.

Start engine and let it idle.

3.

Perform “VIAS S/V-2” in “ACTIVE TEST” mode with CONSULT.

4.

Turn VIAS control solenoid valve 2 ON and OFF, and check vacuum existence under the following condi-
tions.

VIAS S/V-1

Vacuum

ON

Existed

OFF

Not existed

Condition

Vacuum

Idle

Existed

Rev engine quickly up to approximately 5,000 rpm

Not existed

SEF109L

VARIABLE INDUCTION AIR SYSTEM

EC-471

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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 Without CONSULT

1.

Stop engine and disconnect vacuum hose connected to power valve actuator 2.

2.

Disconnect VIAS control solenoid valve 1 harness connector.

3.

Start engine.

4.

Rev engine quickly up to approximately 5,000 rpm.

5.

Check vacuum existence under the following conditions.

Is the inspection result normal?

YES

>> Repair or replace power valve actuator 2. Refer to 

EC-36, "Component Parts Location"

.

NO

>> GO TO 7.

7.

CHECK VACUUM HOSE

1.

Stop engine.

2.

Check vacuum hose for crack, clogging, improper connection or
disconnection. Refer to 

EC-110, "System Diagram"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair hoses or tubes.

8.

CHECK VIAS CONTROL SOLENOID VALVE 2

Refer to 

EC-398, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace VIAS control solenoid valve 2. Refer to 

EM-33, "Exploded View"

.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

VIAS S/V 2

Vacuum

ON

Existed

OFF

Not existed

Condition

Operation

Idle

Existed

Rev engine quickly up to approximately 5,000 rpm

Not existed

SEF109L

EC-472

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000009720240

VALUES ON THE DIAGNOSIS TOOL

NOTE:
• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• Numerical values in the following table are reference values.
• These values are input/output values that ECM receives/transmits and may differ from actual operations.

Example:
The ignition timing shown by the timing light may differ from the ignition timing displayed on the data monitor.
This occurs because the timing light shows a value calculated by ECM according to signals received from
the cam shaft position sensor and other sensors related to ignition timing.

For outlines of following items, refer to 

EC-129, "CONSULT Function"

.

Monitor Item

Condition

Values/Status

ENG SPEED

Run engine and compare CONSULT value with the tachometer indication.

Almost the same speed as 
the tachometer indication.

MAS A/F SE-B1

See 

EC-140, "Description"

.

B/FUEL SCHDL

See 

EC-140, "Description"

.

A/F ALPHA-B1

See 

EC-140, "Description"

.

A/F ALPHA-B2

See 

EC-140, "Description"

.

COOLANT TEMP/S

• Engine: After warming up

More than 70

°

C (158

°

F)

A/F SEN1 (B1)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 2.2 V

A/F SEN1 (B2)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 2.2 V

HO2S2 (B1)

• Revving engine from idle to 3,000 rpm quickly after the following conditions 

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

0 - 0.3 V 

←→

 Approx. 0.6 - 

1.0 V

HO2S2 (B2)

• Revving engine from idle to 3,000 rpm quickly after the following conditions 

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

0 - 0.3 V 

←→

 Approx. 0.6 - 

1.0 V

HO2S2 MNTR (B1)

• Revving engine from idle to 3,000 rpm quickly after the following conditions 

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

LEAN 

←→

 RICH

HO2S2 MNTR (B2)

• Revving engine from idle to 3,000 rpm quickly after the following conditions 

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

LEAN 

←→

 RICH

VHCL SPEED SE

• Turn drive wheels and compare CONSULT value with the speedometer indi-

cation.

Almost the same speed as 
speedometer indication

BATTERY VOLT

• Ignition switch: ON (Engine stopped)

11 - 14 V

ACCEL SEN 1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.5 - 1.0 V

Accelerator pedal: Fully depressed

4.2 - 4.8 V

ACCEL SEN 2*

1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.5 - 1.0 V

Accelerator pedal: Fully depressed

4.2 - 4.8 V

ECM

EC-473

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

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TP SEN 1-B1

• Ignition switch: ON

(Engine stopped)

• Selector lever: D position

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

TP SEN 2-B1*

1

• Ignition switch: ON

(Engine stopped)

• Selector lever: D position

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

FUEL T/TMP SE

• Ignition switch: ON

Indicates fuel tank tempera-
ture

INT/A TEMP SE

• Ignition switch: ON

Indicates intake air tempera-
ture

EVAP SYS PRES

• Ignition switch: ON

Approx. 1.8 - 4.8 V

FUEL LEVEL SE

• Ignition switch: ON

Depending on fuel level of 
fuel tank

START SIGNAL

• Ignition switch: ON 

→

 START 

→

 ON

OFF 

→

 ON 

→

 OFF

CLSD THL POS

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

ON

Accelerator pedal: Slightly depressed

OFF

AIR COND SIG

• Engine: After warming up, idle the 

engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

ON

P/N POSI SW

• Ignition switch: ON

Selector lever: P or N position

ON

Selector lever: Except above position

OFF

PW/ST SIGNAL

• Engine: After warming up, idle the 

engine

Steering wheel: Not being turned

OFF

Steering wheel: Being turned

ON

LOAD SIGNAL

• Ignition switch: ON

Rear window defogger switch: ON
and/or
Lighting switch: 2nd position

ON

Rear window defogger switch and lighting 
switch: OFF

OFF

IGNITION SW

• Ignition switch: ON 

→

 OFF 

→

 ON

ON 

→

 OFF 

→

 ON

HEATER FAN SW

• Engine: After warming up, idle the 

engine

Heater fan switch: ON

ON

Heater fan switch: OFF

OFF

BRAKE SW

• Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

INJ PULSE-B1

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

INJ PULSE-B2

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

IGN TIMING

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

7 - 17

°

BTDC

2,000 rpm

25 - 45

°

BTDC

CAL/LD VALUE

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

5 - 35%

2,500 rpm

5 - 35%

MASS AIRFLOW

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 6.0 g/s

2,500 rpm

7.0 - 20.0 g/s

Monitor Item

Condition

Values/Status