Nissan Frontier. Manual — part 428
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-283
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
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DTC Confirmation Procedure
INFOID:0000000009480941
Perform PROCEDURE FOR MALFUNCTION A first.
If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.
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.
PROCEDURE FOR MALFUNCTION A
TESTING CONDITION:
• Perform “DTC Confirmation Procedure” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed
on flat level surface.
• Always perform test at a temperature of 5 to 60
°C (41 to 140°F).
• Cool the vehicle so that engine coolant temperature becomes same level as ambient temperature.
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.
2. Check that the following condition are met.
FUEL T/TMP SE: 0 – 35
°C (32 – 95°F)
3. Start engine and wait at least 60 seconds.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to
With GST
1. Turn ignition switch ON.
2. Set voltmeter probes to ECM terminal 95 (FTT sensor signal) and ground.
3. Check that the voltage is 3.1 – 4.2 V.
4. Start engine and wait at least 60 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to
PROCEDURE FOR MALFUNCTION B
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
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. Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CONSULT changes to “COMPLETED”. (It will take approxi-
mately 10 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from step 2.
7. Check that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to
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. Start engine and let it idle for at least 20 seconds.
4. Select Service $07 with GST.
5. If 1st trip DTC is detected, go to
EC-284
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Diagnosis Procedure
INFOID:0000000009480942
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 voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT or tester.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E2, F32
• 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 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 harness continuity between ECM terminal 25 and EVAP canister purge volume 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 4.
NG
>> 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.
OK or NG
OK
>> GO TO 5.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-14, "Removal and Installation"
.
5.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
BBIA0620E
Voltage: Battery voltage
PBIB2651E
Continuity should exist.
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-285
< DTC/CIRCUIT DIAGNOSIS >
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EC-304, "Component Inspection"
OK or NG
OK (With CONSULT)>>GO TO 6.
OK (Without CONSULT)>>GO TO 7.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-14, "Removal and Installation"
.
6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT
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. Check that engine speed varies
according to the valve opening.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-286, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace EVAP canister purge volume control solenoid valve. Refer to
8.
CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
OK or NG
OK
>> GO TO 9.
NG
>> Clean the rubber tube using an air blower.
9.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-296, "Component Inspection"
OK or NG
OK
>> GO TO 10.
NG
>> Replace EVAP canister vent control valve. Refer to
FL-14, "Removal and Installation"
.
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. Does water drain from the EVAP canister?
Yes or No
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 2.0 kg (4.4 lb).
OK or NG
OK
>> GO TO 13.
NG
>> GO TO 12.
BBIA0558E
EC-286
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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. Refer to
.
13.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000009480943
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT
Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.
Without CONSULT
Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.
Condition
(PURG VOL CONT/V value)
Air passage continuity
between A and B
100%
Yes
0%
No
PBIB2058E
Condition
Air passage continuity
between A and B
12V direct current supply between
terminals 1 and 2
Yes
No supply
No
PBIB2059E
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