Infiniti G37 Coupe. Manual — part 527
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-289
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
OK
>> INSPECTION END
NG
>> Go to
3.
PERFORM DTC CONFIRMATION PROCEDURE
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Start engine and let it idle for at least 20 seconds.
6.
Check 1st trip DTC.
Is 1st trip DTC displayed?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001734110
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.
4.
Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.
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 or 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 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
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
F101
21
Existed
EC-290
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Check the following.
• Harness connectors F104, F105
• 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.
5.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1.
Disconnect EVAP control system pressure sensor harness connector.
2.
Check connectors for water.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace EVAP control system pressure sensor.
6.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-306, "Component Inspection"
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 7.
YES-2 >> Without CONSULT-III: GO TO 8.
NO
>> Replace EVAP control system pressure sensor.
7.
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 9.
NO
>> GO TO 8.
8.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-291, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace EVAP canister purge volume control solenoid valve.
9.
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 10.
NO
>> Clean the rubber tube using an air blower.
10.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-298, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Replace EVAP canister vent control valve.
11.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1.
Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
Water should not exist.
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-291
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2.
Check if water will drain from EVAP canister (1).
Does water drain from the EVAP canister?
YES
>> GO TO 12.
NO
>> 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 2.2 kg (4.9 lb).
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> 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
GI-38, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000001734111
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 CONT/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.
2
: EVAP canister vent control valve
PBIB2731E
Condition
(PURG VOL CONT/V value)
Air passage continuity
between (A) and (B)
100%
Existed
0%
Not existed
JMBIA0068ZZ
EC-292
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P0443 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
Air passage continuity
between (A) and (B)
12V direct current supply between
terminals 1 and 2
Existed
No supply
Not existed
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