Infiniti FX35, FX50 (S51). Manual — part 840
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-901
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
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EC
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Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E106, M6
• Harness connectors M116, F103
• 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, short to ground or short to power in harness or connectors.
3.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1.
Disconnect EVAP control system pressure sensor harness connector.
2.
Check that water is not inside connectors.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace EVAP control system pressure sensor.
5.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-917, "Component Inspection"
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 6.
YES-2 >> Without CONSULT-III: GO TO 7.
NO
>> Replace EVAP control system pressure sensor.
6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect harness connectors disconnected.
3.
Start engine.
4.
Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
Does engine speed vary according to the valve opening?
YES
>> GO TO 8.
EVAP canister purge volume control solenoid valve
Ground
Voltage
Connector
Terminal
F7
1
Ground
Battery voltage
EVAP canister purge volume control solenoid valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F7
2
F110
8
Existed
EC-902
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
NO
>> GO TO 7.
7.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-903, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace EVAP canister purge volume control solenoid valve.
8.
CHECK RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Clean the rubber tube using an air blower.
9.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-909, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Replace EVAP canister vent control valve.
10.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1.
Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2.
Check if water will drain from EVAP canister (1).
-
EVAP canister vent control valve (2)
Does water drain from the EVAP canister?
YES
>> GO TO 11.
NO
>> GO TO 13.
11.
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).
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> GO TO 12.
12.
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.
13.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
PBIB2731E
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-903
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
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EC
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Component Inspection
INFOID:0000000005237371
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.
Turn ignition switch ON.
5.
Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.
6.
Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG
VOL C/V” opening and check air passage continuity of EVAP
canister purge volume control solenoid valve under the following
conditions.
Without CONSULT-III
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.
Check air passage continuity of EVAP canister purge volume
control solenoid valve under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace EVAP canister purge volume control solenoid
valve
Condition
(PURG VOL C/V value)
Air passage continuity
between (A) and (B)
100%
Existed
0%
Not existed
JMBIA0068ZZ
Condition
Air passage continuity
between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Existed
No supply
Not existed
JMBIA0068ZZ
EC-904
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
Description
INFOID:0000000005237372
The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel vapor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the
amount of fuel vapor that will flow through the valve.
DTC Logic
INFOID:0000000005237373
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting 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 13 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005237374
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.
Turn ignition switch ON.
JMBIA0069ZZ
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0444
EVAP canister purge volume
control solenoid valve circuit
open
An excessively low voltage signal is
sent to ECM through the valve
• Harness or connectors
(The solenoid valve circuit is open or shorted.)
• EVAP canister purge volume control solenoid
valve
P0445
EVAP canister purge volume
control solenoid valve circuit
shorted
An excessively high voltage signal is
sent to ECM through the valve
• Harness or connectors
(The solenoid valve circuit is shorted.)
• EVAP canister purge volume control solenoid
valve
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