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![NISSAN TEANA 2008 Service Manual EC-348
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000003856862
The refrigerant pressure sensor is installed at the condenser NISSAN TEANA 2008 Service Manual EC-348
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000003856862
The refrigerant pressure sensor is installed at the condenser](/manual-img/5/57391/w960_57391-1808.png)
EC-348
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000003856862
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.
Component Function CheckINFOID:0000000003856863
1.CHECK REFRIGERANT PRESSURE SENSOR FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-348, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856864
1.CHECK GROUND CONNECTION
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine.
3. Turn ignition switch OFF.
4. Check ground connection E38. Refer to Ground Inspection in GI-37, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
PBIB2657E
ECM
Voltage (V)
Connector+–
Te r m i n a l Te r m i n a l
F839
(Refrigerant pressure sensor signal)40
(Sensor ground)1.0 - 4.0
Refrigerant pressure sensor
Ground Voltage (V)
Connector Terminal
E300 1 Ground Approx. 5
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![NISSAN TEANA 2008 Service Manual REFRIGERANT PRESSURE SENSOR
EC-349
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NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F123, E NISSAN TEANA 2008 Service Manual REFRIGERANT PRESSURE SENSOR
EC-349
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NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F123, E](/manual-img/5/57391/w960_57391-1809.png)
REFRIGERANT PRESSURE SENSOR
EC-349
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NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F123, E6
IPDM E/R harness connectors E10, E346
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.
4.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F123, E6
IPDM E/R harness connectors E10, E346
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.
6.CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F123, E6
IPDM E/R harness connectors E10, E346
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-35, "
Intermittent Incident".
Is the inspection result normal?
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E300 3 F8 40 Existed
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E300 2 F8 39 Existed
Page 1811 of 5121
EC-350
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
REFRIGERANT PRESSURE SENSOR
YES >> Replace refrigerant pressure sensor.
NO >> Repair or replace malfunctioning part.
Page 1812 of 5121
![NISSAN TEANA 2008 Service Manual VARIABLE INDUCTION AIR SYSTEM
EC-351
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VARIABLE INDUCTION AIR SYSTEM
DescriptionINFOID:0000000003856865
Power Valves 1 and 2 (VQ35 NISSAN TEANA 2008 Service Manual VARIABLE INDUCTION AIR SYSTEM
EC-351
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VARIABLE INDUCTION AIR SYSTEM
DescriptionINFOID:0000000003856865
Power Valves 1 and 2 (VQ35](/manual-img/5/57391/w960_57391-1811.png)
VARIABLE INDUCTION AIR SYSTEM
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VARIABLE INDUCTION AIR SYSTEM
DescriptionINFOID: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
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![NISSAN TEANA 2008 Service Manual 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 FUNCT NISSAN TEANA 2008 Service Manual 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 FUNCT](/manual-img/5/57391/w960_57391-1812.png)
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
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![NISSAN TEANA 2008 Service Manual VARIABLE INDUCTION AIR SYSTEM
EC-353
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Component Function Check (VQ25DE engine)INFOID:0000000003895854
1.CHECK OVERALL FUNCTION
W NISSAN TEANA 2008 Service Manual VARIABLE INDUCTION AIR SYSTEM
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Component Function Check (VQ25DE engine)INFOID:0000000003895854
1.CHECK OVERALL FUNCTION
W](/manual-img/5/57391/w960_57391-1813.png)
VARIABLE INDUCTION AIR SYSTEM
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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
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![NISSAN TEANA 2008 Service Manual EC-354
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
1. Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2. Disconnect VIAS control solenoid valve 1 NISSAN TEANA 2008 Service Manual EC-354
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
1. Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2. Disconnect VIAS control solenoid valve 1](/manual-img/5/57391/w960_57391-1814.png)
EC-354
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
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. When revving engine up to 5,000 rpm quickly.
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-93, "
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-286, "
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 con-
ditions.
Without CONSULT-III
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.
Condition Operation
Idle Existed
When revving engine up to 5,000 rpm quickly Not existed
SEF109L
VIAS S/V 2 Vacuum
ON Existed
OFF Not existed
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4. When revving engine up to 5,000 rpm quickly.
5. Check vacuum existence under the followi NISSAN TEANA 2008 Service Manual VARIABLE INDUCTION AIR SYSTEM
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4. When revving engine up to 5,000 rpm quickly.
5. Check vacuum existence under the followi](/manual-img/5/57391/w960_57391-1815.png)
VARIABLE INDUCTION AIR SYSTEM
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4. When revving engine up to 5,000 rpm quickly.
5. Check vacuum existence under the following conditions.
Is the inspection result normal?
YES >> Repair or replace power valve actuator 2.
NO >> GO TO 7.
7.CHECK VACUUM HOSE
1. Stop engine.
2. Check vacuum hose for cracks, clogging, improper connection
or disconnection. Refer to EC-93, "
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-289, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace VIAS control solenoid valve 2.
9.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
>> INSPECTION END
Diagnosis Procedure (VQ25DE engine)INFOID:0000000003896867
1.INSPECTION START
Confirm the malfunctioning system (power valve). Refer to EC-353, "
Component Function Check (VQ25DE
engine)".
Which system is related to the incident?
>> GO TO 2.
2.CHECK VACUUM EXISTENCE
With CONSULT-III
1. Stop engine and disconnect vacuum hose connected to power valve actuator.
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 “ON” and “OFF”, and check vacuum existence under the following condi-
tions.
Without CONSULT-III
Condition Operation
Idle Existed
When revving engine up to 5,000 rpm quickly Not existed
SEF109L
VIAS S/V Vacuum
ON Existed
OFF Not existed