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
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
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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EC
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
.
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
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