Nissan Murano Z50 (2005 year). Manual

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-563

Revision: 2005 August

2005 Murano

On Board Diagnosis Logic

ABS004LR

DTC Confirmation Procedure

ABS004LS

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5

C (41

F) or more.

WITH CONSULT-II

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-II.

Touch “START”.

Start engine and let it idle until “TESTING” on CONSULT-II changes to “COMPLETED”. (It will take
approximately 10 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from step 2.

Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to

EC-

566, "Diagnostic Procedure"

WITH GST

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Start engine and let it idle for at least 20 seconds.

Select Service $07 with GST.

If 1st trip DTC is detected, go to

EC-566, "Diagnostic Procedure"

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1444
1444

EVAP canister purge
volume control solenoid
valve

The canister purge flow is detected during the
specified driving conditions, even when EVAP
canister purge volume control solenoid valve is
completely closed.

●

EVAP control system pressure sensor

●

EVAP canister purge volume control
solenoid valve
(The valve is stuck open.)

●

EVAP canister vent control valve

●

EVAP canister

●

Hoses
(Hoses are connected incorrectly or
clogged.)

PBIB0839E

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-565

Revision: 2005 August

2005 Murano

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

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.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

GR/L

EVAP canister purge vol-
ume control solenoid valve

[Engine is running]

●

Idle speed

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine).

BATTERY VOLTAGE

(11 - 14V)

111

W/B

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 after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

119

120

R/B
R/B

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

SEC990C

SEC991C

EC-566

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Revision: 2005 August

2005 Murano

Diagnostic Procedure

ABS004LU

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR-

CUIT

Turn ignition switch OFF.

Disconnect EVAP canister purge volume control solenoid valve
harness connector.

Turn ignition switch ON.

Check voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT-II or tester.

OK or NG

>> GO TO 3.

>> GO TO 2.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E110, M7

●

Harness connectors M82, F102

●

Harness connectors F29, F201

●

IPDM E/R harness connector E7

●

Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R

●

Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

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

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-

CUIT FOR OPEN AND SHORT

Turn ignition switch OFF.

Disconnect ECM harness connector.

Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.

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

OK or NG

>> GO TO 5.

>> GO TO 4.

PBIB2090E

Voltage: Battery voltage

PBIB0148E

Continuity should exist.

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-567

Revision: 2005 August

2005 Murano

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F29, F201

●

Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

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

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

Disconnect EVAP control system pressure sensor harness connector.

Check connectors for water.

OK or NG

>> GO TO 6.

>> Replace EVAP control system pressure sensor.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to

EC-354, "Component Inspection"

OK or NG

OK (With CONSULT-II)>>GO TO 7.
OK (Without CONSULT-II)>>GO TO 8.
NG

>> Replace EVAP control system pressure sensor.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II

Turn ignition switch OFF.

Reconnect harness connectors disconnected.

Start engine.

Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.

OK or NG

>> GO TO 9.

>> GO TO 8.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to

EC-569, "Component Inspection"

OK or NG

>> GO TO 9.

>> Replace EVAP canister purge volume control solenoid valve.

Water should not exist.

PBIB1678E

EC-568

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Revision: 2005 August

2005 Murano

CHECK RUBBER TUBE FOR CLOGGING

Disconnect rubber tube connected to EVAP canister vent control valve.

Check the rubber tube for clogging.

OK or NG

>> GO TO 10.

>> Clean the rubber tube using an air blower.

10.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-344, "Component Inspection"

OK or NG

>> GO TO 11.

>> Replace EVAP canister vent control valve.

11.

CHECK IF EVAP CANISTER SATURATED WITH WATER

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 12.

>> GO TO 14.

12.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

>> GO TO 14.

>> GO TO 13.

13.

DETECT MALFUNCTIONING PART

Check the following.

●

EVAP canister for damage

●

EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

14.

CHECK INTERMITTENT INCIDENT

Refer to

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

PBIB1381E

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-569

Revision: 2005 August

2005 Murano

Component Inspection

ABS004LV

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

Removal and Installation

ABS004LW

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to

EM-18, "INTAKE MANIFOLD COLLECTOR"

Condition

(PURG VOL CONT/V value)

Air passage continuity

between A and B

100%

Yes

PBIB0149E

Condition

Air passage continuity

between A and B

12V direct current supply between
terminals 1 and 2

Yes

No supply

PBIB0150E

EC-570

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

Revision: 2005 August

2005 Murano

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

ABS004LX

The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows EVAP
Control System diagnosis.

CONSULT-II Reference Value in Data Monitor Mode

ABS004LY

Specification data are reference values.

On Board Diagnosis Logic

ABS004LZ

PBIB1263E

PBIB1365E

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

●

Ignition switch: ON

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1446
1446

EVAP canister vent con-
trol valve close

EVAP canister vent control valve remains
closed under specified driving conditions.

●

EVAP canister vent control valve

●

EVAP control system pressure sensor
and the circuit

●

Blocked rubber tube to EVAP canister
vent control valve

●

EVAP canister is saturated with water

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

EC-571

Revision: 2005 August

2005 Murano

DTC Confirmation Procedure

ABS004M0

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

WITH CONSULT-II

Turn ignition switch ON and wait at least 5 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.

Start engine and let it idle for at least 1 minute.

Repeat next procedures 3 times.

Increase the engine speed up to 3,000 to 3,500 rpm and keep it
for 2 minutes and 50 seconds to 3 minutes.
Never exceed 3 minutes.

Fully released accelerator pedal and keep engine idle for about
5 seconds.

If 1st trip DTC is detected, go to

EC-573, "Diagnostic Procedure"

.
If 1st trip DTC is not detected, go to the next step.

Repeat next procedure 20 times.

Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds.

Fully released accelerator pedal and keep engine idle for at least 35 seconds.

If 1st trip DTC is detected, go to

EC-573, "Diagnostic Procedure"

WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

PBIB0972E

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

EC-573

Revision: 2005 August

2005 Murano

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.

Diagnostic Procedure

ABS004M2

CHECK RUBBER TUBE

Turn ignition switch OFF.

Disconnect rubber tube connected to EVAP canister vent control valve.

Check the rubber tube for clogging.

OK or NG

>> GO TO 2.

>> Clean rubber tube using an air blower.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-575, "EVAP CANISTER VENT CONTROL VALVE"

OK or NG

>> GO TO 3.

>> Replace EVAP canister vent control valve.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

111

W/B

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 after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

117

EVAP canister vent control
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

119

120

R/B
R/B

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

PBIB1365E

EC-574

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

Revision: 2005 August

2005 Murano

CHECK IF EVAP CANISTER SATURATED WITH WATER

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 4.

>> GO TO 6.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

>> GO TO 6.

>> GO TO 5.

DETECT MALFUNCTIONING PART

Check the following.

●

EVAP canister for damage

●

EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

Disconnect EVAP control system pressure sensor harness connector.

Check connectors for water.

OK or NG

>> GO TO 7.

>> Replace EVAP control system pressure sensor.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to

EC-354, "Component Inspection"

OK or NG

>> GO TO 8.

>> Replace EVAP control system pressure sensor.

CHECK INTERMITTENT INCIDENT

Refer to

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

PBIB1381E

Water should not exist.

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

EC-575

Revision: 2005 August

2005 Murano

Component Inspection

ABS004M3

EVAP CANISTER VENT CONTROL VALVE

With CONSULT-II

Remove EVAP canister vent control valve from EVAP canister.

Check portion B of EVAP canister vent control valve for being
rusted.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.

Reconnect harness connectors disconnected.

Turn ignition switch ON.

Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

Check air passage continuity and operation delay time.
Make sure new O-ring is installed properly.

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.
If OK, go to next step.

Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower.

Perform step 6 again.

Without CONSULT-II

Remove EVAP canister vent control valve from EVAP canister.

Check portion B of EVAP canister vent control valve for being
rusted.

Check air passage continuity and operation delay time under the
following conditions.
Make sure new O-ring is installed properly.

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.
If OK, go to next step.

Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower.

PBIB1033E

Condition VENT CONTROL/V

Air passage continuity between A and B

OFF

Yes

PBIB1679E

PBIB1033E

Condition

Air passage continuity between A and B

12V direct current supply between
terminals 1 and 2

OFF

Yes

PBIB1034E

DTC P1564 ASCD STEERING SWITCH

EC-577

Revision: 2005 August

2005 Murano

DTC P1564 ASCD STEERING SWITCH

PFP:25551

Component Description

ABS004M4

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.

Refer to

EC-28, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

ABS004M5

Specification data are reference values.

On Board Diagnosis Logic

ABS004M6

This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.

NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-397

PBIB2619E

MONITOR ITEM

CONDITION

SPECIFICATION

MAIN SW

●

Ignition switch: ON

MAIN switch: Pressed

MAIN switch: Released

OFF

CANCEL SW

●

Ignition switch: ON

CANCEL switch: Pressed

CANCEL switch: Released

OFF

RESUME/ACC SW

●

Ignition switch: ON

RESUME/ACCELERATE switch:
Pressed

RESUME/ACCELERATE switch:
Released

OFF

SET SW

●

Ignition switch: ON

SET/COAST switch: Pressed

SET/COAST switch: Released

OFF

DTC No.

Trouble Diagnosis

Name

DTC Detecting Condition

Possible Cause

P1564
1564

ASCD steering
switch

●

An excessively high voltage signal from the ASCD
steering switch is sent to ECM.

●

ECM detects that input signal from the ASCD
steering switch is out of the specified range.

●

ECM detects that the ASCD steering switch is
stuck ON.

●

Harness or connectors
(The switch circuit is open or shorted.)

●

ASCD steering switch

●

ECM

EC-578

DTC P1564 ASCD STEERING SWITCH

Revision: 2005 August

2005 Murano

DTC Confirmation Procedure

ABS004M7

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Wait at least 10 seconds.

Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.

Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.

Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.

Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.

If DTC is detected, go to

EC-580, "Diagnostic Procedure"

WITH GST

Follow the procedure “WITH CONSULT-II” above.

Nissan Murano Z50 (2005 year). Manual - part 113