Nissan Murano Z51. Instruction — part 595
EC-388
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1800 VIAS CONTROL SOLENOID VALVE 1
3.
Check the continuity between VIAS control solenoid valve 1 harness connector and ECM harness con-
nector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK VIAS CONTROL SOLENOID VALVE 1
EC-388, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace VIAS control solenoid valve 1.
4.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005536801
1.
CHECK VIAS CONTROL SOLENOID VALVE 1
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Disconnect vacuum hoses connected to VIAS control solenoid valve 1.
4.
Turn ignition switch ON.
5.
Select “VIAS S/V-1” in “ACTIVE TEST” mode with CONSULT-III.
6.
Check air passage continuity and operation delay time under the
following conditions.
Without CONSULT-III
1.
Turn ignition switch OFF.
2.
Disconnect VIAS control solenoid valve 1 harness connector.
3.
Disconnect vacuum hoses connected to VIAS volume control solenoid valve 1.
VIAS control solenoid valve 1
ECM
Continuity
Connector
Terminal
Connector
Terminal
F74
2
F7
27
Existed
Condition
(VIAS S/V-1)
Air passage continuity
between (A) and (B)
Air passage continuity
between (A) and (C)
ON
Existed
Not existed
OFF
Not existed
Existed
JMBIA0180ZZ
P1800 VIAS CONTROL SOLENOID VALVE 1
EC-389
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
Check air passage continuity and operation delay time under the
following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace VIAS control solenoid valve 1
Condition
Air passage continuity
between (A) and (B)
Air passage continuity
between (A) and (C)
12 V direct current supply be-
tween terminals 1 and 2
Existed
Not existed
No supply
Not existed
Existed
PBIB2532E
EC-390
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1801 VIAS CONTROL SOLENOID VALVE 2
P1801 VIAS CONTROL SOLENOID VALVE 2
Description
INFOID:0000000005536802
The VIAS control solenoid valve 2 cuts the intake manifold vacuum signal for power valve 2 control. It
responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum signal from the intake
manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and sends the vac-
uum signal to the power valve actuator 2.
DTC Logic
INFOID:0000000005536803
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for at least 5 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005536804
1.
CHECK VIAS CONTROL SOLENOID VALVE 2 POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect VIAS control solenoid valve 2 harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between VIAS control solenoid valve 2 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK VIAS CONTROL SOLENOID VALVE 2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1801
VIAS control solenoid valve 2
circuit
An excessively low or high voltage signal
is sent to ECM through the VIAS control
solenoid valve 2.
• Harness or connectors
(The solenoid valve 2 circuit is open or
shorted.)
• VIAS control solenoid valve 2
VIAS control solenoid valve 2
Ground
Voltage
Connector
Terminal
F75
1
Ground
Battery voltage
P1801 VIAS CONTROL SOLENOID VALVE 2
EC-391
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
Check the continuity between VIAS control solenoid valve 2 harness connector and ECM harness con-
nector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK VIAS CONTROL SOLENOID VALVE 2
EC-391, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace VIAS control solenoid valve 2.
4.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005536805
1.
CHECK VIAS CONTROL SOLENOID VALVE 2
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Disconnect vacuum hoses connected to VIAS control solenoid valve 2.
4.
Turn ignition switch ON.
5.
Select “VIAS S/V-2” in “ACTIVE TEST” mode with CONSULT-III.
6.
Check air passage continuity and operation delay time under the
following conditions.
Without CONSULT-III
1.
Turn ignition switch OFF.
2.
Disconnect VIAS control solenoid valve 2 harness connector.
3.
Disconnect vacuum hoses connected to VIAS volume control solenoid valve 2.
VIAS control solenoid valve 2
ECM
Continuity
Connector
Terminal
Connector
Terminal
F75
2
F7
26
Existed
Condition
(VIAS S/V-2)
Air passage continuity
between (A) and (B)
Air passage continuity
between (A) and (C)
ON
Existed
Not existed
OFF
Not existed
Existed
JMBIA0180ZZ
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