Nissan Pathfinder (2006 year). Manual - part 226

VIAS

EC-667

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EC

2006 Pathfinder

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

29

G

VIAS control solenoid valve

[Engine is running]

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Engine speed: Between 2,200 and 3,300 
rpm.

0 - 1.0V

111

BR

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

●

For a few seconds after turning ignition 
switch OFF

0 - 1.5V

[Ignition switch: OFF]

●

More than a few seconds passed after turn-
ing ignition switch OFF

BATTERY VOLTAGE
(11 - 14V)

119

120

R
P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

EC-668

VIAS

2006 Pathfinder

Diagnostic Procedure

UBS00KI3

1. 

CHECK OVERALL FUNCTION

 With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CON-
SULT-II.

3.

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

 Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Rev engine up to between 2,200 and 3,300 rpm and make sure
that power valve actuator rod moves.

OK or NG

OK

>> INSPECTION END

NG (With CONSULT-II) >>GO TO 2.
NG (Without CONSULT-II) >>GO TO 3.

PBIB0844E

BBIA0570E

BBIA0570E

VIAS

EC-669

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EC

2006 Pathfinder

2. 

CHECK VACUUM EXISTENCE

 With CONSULT-II

1.

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

2.

Start engine and let it idle.

3.

Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CONSULT-II.

4.

Turn VIAS control solenoid valve “ON” and “OFF”, and check
vacuum existence under the following conditions.

OK or NG

OK

>> Repair or replace power valve actuator.

NG >> GO 

TO 

4.

3. 

CHECK VACUUM EXISTENCE

 Without CONSULT-II

1.

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

2.

Disconnect VIAS control solenoid valve harness connector.

3.

Start engine and let it idle.

4.

Apply 12V of direct current between VIAS control solenoid valve
terminals 1 and 2.

5.

Check vacuum existence under the following conditions.

OK or NG

OK

>> Repair or replace power valve actuator.

NG

>> GO TO 4.

4. 

CHECK VACUUM HOSE

1.

Stop engine.

2.

Check hoses and tubes between intake manifold and power
valve actuator for crack, clogging, improper connection or dis-
connection. Refer to 

EC-101, "Vacuum Hose Drawing"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair hoses or tubes.

VIAS SOL VALVE

Vacuum

ON

Should exist.

OFF

Should not exist.

PBIB0844E

Condition

Vacuum

12V direct current supply

Should exist.

No supply

Should not exist.

PBIB0845E

SEF109L

EC-670

VIAS

2006 Pathfinder

5. 

CHECK VACUUM TANK

Refer to 

EC-671, "Component Inspection"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace vacuum tank.

6. 

CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect VIAS control solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between terminal 1 and ground with CONSULT-II
or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E2, F32

●

Harness for open or short between VIAS control solenoid valve and IPDM E/R

●

Harness for open or short between VIAS control solenoid valve and ECM

>> Repair harness or connectors.

8. 

CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 9.

NG

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

BBIA0569E

Voltage: Battery voltage

PBIB0173E

Continuity should exist.

VIAS

EC-671

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2006 Pathfinder

9. 

CHECK VIAS CONTROL SOLENOID VALVE

Refer to 

EC-671, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace VIAS control solenoid valve.

10. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

UBS00KI4

VIAS CONTROL SOLENOID VALVE

 With CONSULT-II

1.

Reconnect harness connectors disconnected.

2.

Turn ignition switch ON.

3.

Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode.

4.

Check air passage continuity and operation delay time under the
following conditions.

Operation takes less than 1 second.

 Without CONSULT-II

Check air passage continuity and operation delay time under the fol-
lowing conditions.

Operation takes less than 1 second.

VACUUM TANK

1.

Disconnect vacuum hose connected to vacuum tank.

2.

Connect a vacuum pump to the port (A) of vacuum tank.

3.

Apply vacuum and make sure that vacuum exists at the port (B).

Condition

VIAS SOL VALVE

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

ON

Yes

No

OFF

No

Yes

PBIB2505E

Condition

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

12V direct current supply 
between terminals 1 and 2

Yes

No

No supply

No

Yes

PBIB2532E

PBIB0846E

EC-672

VIAS

2006 Pathfinder

Removal and Installation

UBS00KI5

VIAS CONTROL SOLENOID VALVE

Refer to 

EM-20, "INTAKE MANIFOLD"

 .

MIL AND DATA LINK CONNECTOR

EC-673

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EC

2006 Pathfinder

MIL AND DATA LINK CONNECTOR

PFP:24814

Wiring Diagram

UBS00KIY

BBWA2381E

EC-674

MIL AND DATA LINK CONNECTOR

2006 Pathfinder

BBWA1780E