Nissan Teana J32. Manual - part 453

EC-350

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

REFRIGERANT PRESSURE SENSOR

YES

>> Replace refrigerant pressure sensor.

NO

>> Repair or replace malfunctioning part. 

VARIABLE INDUCTION AIR SYSTEM

EC-351

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

VARIABLE INDUCTION AIR SYSTEM

Description

INFOID:0000000003856865

Power Valves 1 and 2 (VQ35DE engine)

The power valves 1 and 2 are installed in intake manifold collector and used to control the suction passage of
the variable induction air control system. They are set in the fully closed or fully opened position by the power
valve actuators 1 and 2 operated by the vacuum stored in the vacuum tank. The vacuum to power valve actu-
ators is controlled by the VIAS control solenoid valves 1 and 2.

Power Valve (VQ25DE engine)

The power valve is installed in intake manifold collector and used to control the suction passage of the variable
induction air control system. It is set in the fully closed or fully opened position by the power valve actuator
operated by the vacuum stored in the vacuum tank. The vacuum to power valve actuator is controlled by the
VIAS control solenoid valve.

Component Function Check (VQ35DE engine)

INFOID:0000000003856866

1.

CHECK OVERALL FUNCTION-I

 With CONSULT-III

1.

Start engine and warm it up to the normal operating temperature.

2.

Perform “VIAS S/V-1” in “ACTIVE TEST” mode with CONSULT-III.

3.

Turn VIAS control solenoid valve 1 “ON” and “OFF”, and check that power valve actuator 1 rod moves.

 Without CONSULT-III

1.

Start engine and warm it up to the normal operating temperature.

2.

When revving engine up to 5,000 rpm quickly.

3.

Check that power valve actuator 1 rod moves under the following conditions.

1.

Power valve actuator 1

2.

Power valve actuator 1 rod

3.

Power valve actuator 2

4.

Power valve actuator 2 rod

: Vehicle front

1.

Power valve actuator 1

2.

Power valve actuator 1 rod

3.

Power valve actuator 2

4.

Power valve actuator 2 rod

: Vehicle front

JMBIA1386ZZ

JMBIA1386ZZ

EC-352

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

EC-353, "Diagnosis Procedure (VQ35DE engine)"

.

2.

CHECK OVERALL FUNCTION-II

 With CONSULT-III

1.

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

2.

Turn VIAS control solenoid valve 2 “ON” and “OFF”, and check that power valve actuator 2 rod moves.

 Without CONSULT-III

1.

When revving engine up to 5,000 rpm quickly.

2.

Check that power valve actuator 2 rod moves under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>>

EC-353, "Diagnosis Procedure (VQ35DE engine)"

.

Condition

Operation

Idle

Existed

When revving engine up to 5,000 rpm quickly

Not existed

1.

Power valve actuator 1

2.

Power valve actuator 1 rod

3.

Power valve actuator 2

4.

Power valve actuator 2 rod

: Vehicle front

1.

Power valve actuator 1

2.

Power valve actuator 1 rod

3.

Power valve actuator 2

4.

Power valve actuator 2 rod

: Vehicle front

Condition

Operation

Idle

Existed

When revving engine up to 5,000 rpm quickly

Not existed

JMBIA1386ZZ

JMBIA1386ZZ

VARIABLE INDUCTION AIR SYSTEM

EC-353

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Component Function Check (VQ25DE engine)

INFOID:0000000003895854

1.

CHECK OVERALL FUNCTION

 With CONSULT-III

1.

Start engine and warm it up to the normal operating temperature.

2.

Perform “VIAS S/V-1” in “ACTIVE TEST” mode with CONSULT-III.

3.

Turn VIAS control solenoid valve 1 “ON” and “OFF”, and check
that power valve actuator (1) rod (2) moves.

 Without CONSULT-III

1.

Start engine and warm it up to the normal operating temperature.

2.

When revving engine up to 5,000 rpm quickly.

3.

Check that power valve actuator (1) rod (2) moves under the fol-
lowing conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>>

EC-355, "Diagnosis Procedure (VQ25DE engine)"

.

Diagnosis Procedure (VQ35DE engine)

INFOID:0000000003856867

1.

INSPECTION START

Confirm the malfunctioning system (power valve 1 or power valve 2). Refer to 

EC-351, "Component Function

Check (VQ35DE engine)"

.

Which system is related to the incident?

Power valve 1>>GO TO 2.
Power valve 2>>GO TO 6.

2.

CHECK VACUUM EXISTENCE-I

 With CONSULT-III

1.

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

2.

Start engine and let it idle.

3.

Perform “VIAS S/V-1” in “ACTIVE TEST” mode with CONSULT-III.

4.

Turn VIAS control solenoid valve 1 “ON” and “OFF”, and check vacuum existence under the following con-
ditions.

 Without CONSULT-III

: Vehicle front

JMBIA1387ZZ

: Vehicle front

Condition

Operation

Idle

Existed

When revving engine up to 5,000 rpm quickly

Not existed

JMBIA1387ZZ

VIAS S/V 1

Vacuum

ON

Existed

OFF

Not existed