Nissan Altima L32. Instruction — part 596

REFRIGERANT PRESSURE SENSOR

EC-1505

< COMPONENT DIAGNOSIS >

[VQ35DE]

C

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7.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E3, F1

• IPDM E/R harness connectors E18, E201

• IPDM E/R

• Harness for open or short between ECM and refrigerant pressure sensor

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

8.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor.

NO

>> Repair or replace malfunctioning part.

EC-1506

< COMPONENT DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

VARIABLE INDUCTION AIR SYSTEM

Description

INFOID:0000000004362388

Power Valves 1 and 2

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.

Component Function Check

INFOID:0000000004458327

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. Rev engine quickly up to approximately 5,000 rpm.

3. Check that power valve actuator 1 rod moves.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

EC-1507, "Diagnosis Procedure"

.

2.

CHECK OVERALL FUNCTION-II

With CONSULT-III

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

ALBIA0131ZZ

ALBIA0131ZZ

VARIABLE INDUCTION AIR SYSTEM

EC-1507

< COMPONENT DIAGNOSIS >

[VQ35DE]

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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. Rev engine quickly up to approximately 5,000 rpm.

3. Check that power valve actuator 2 rod moves.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>>

EC-1507, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000004458328

1.

INSPECTION START

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

EC-1506, "Component Function

Check"

.

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 condi-

tions.

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

ALBIA0131ZZ

ALBIA0131ZZ

EC-1508

< COMPONENT DIAGNOSIS >

[VQ35DE]

VARIABLE INDUCTION AIR SYSTEM

Without CONSULT-III

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.

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.

4.

CHECK VACUUM HOSE

1. Stop engine.

2. Check vacuum hose for cracks, clogging, improper connection

or disconnection. Refer to

EC-1133, "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-1429, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace VIAS control solenoid valve 1.

6.

CHECK VACUUM EXISTENCE-II

With CONSULT-III

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-III.

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