P0442

DTC P0442 EVAP CONTROL SYSTEM

On Board Diagnosis Logic
This diagnosis detects leakage in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for leakage in the line between the fuel tank and EVAP canister purge volume control solenoid valve, under the following "Vacuum test" conditions.
The EVAP canister vent control valve is closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.

On Board Diagnosis Logic:

CAUTION:
- Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the
MIL may illuminate.
- If the fuel filler cap is not tightened properly, the MIL may illuminate.
- Use only a genuine NISSAN rubber tube as a replacement.

DTC Confirmation Procedure

NOTE:
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:
- Perform "DTC WORK SUPPORT" 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 0 to 30�C (32 to 86�F).

WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.
4. Check that the following conditions are met.
COOLANT TEMP/S: 0 - 70�C (32 - 158�F)
INT/A TEMP SE: 0 - 30�C (32 - 86�F)
5. Select "EVAP SML LEAK P0442/P1442" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-III.
Follow the instructions displayed.

NOTE:
If the engine speed cannot be maintained within the range displayed on the CONSULT-III screen, go to EC-760, "Basic Inspection".
6. Check that "OK" is displayed.
If "NG" is displayed, refer to P0442.

NOTE:
Check that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.

WITH GST

NOTE:
Be sure to read the explanation of "Driving Pattern" in Emission-Related Diagnostic Information before driving vehicle.
1. Start engine.
2. Drive vehicle according to "Driving Pattern" in Emission-Related Diagnostic Information.
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select Service $07 with GST.
- If P0442 is displayed on the screen, go to P0442.
- If P0441 is displayed on the screen, go to P0441.

Diagnosis Procedure
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.

2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK - GO TO 2.
NG - Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG
OK - GO TO 3.
NG - 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until ratcheting sound is heard.
3.CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK - GO TO 5.
NG - GO TO 4.
4.CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to Component Inspection.
OK or NG
OK - GO TO 5.
NG - Replace fuel filler cap with a genuine one.
5.INSTALL THE PRESSURE PUMP

To locate the EVAP leak, install EVAP service port adapter (commercial service tool) and pressure pump to EVAP service port (1) securely.

NOTE:
Improper installation of the EVAP service port adapter (commercial service tool) to the EVAP service port may cause leaking.

With CONSULT-III GO TO 6.
Without CONSULT-III GO TO 7.
6.CHECK FOR EVAP LEAK
With CONSULT-III
1. Turn ignition switch ON.
2. Select "EVAP SYSTEM CLOSE" of "WORK SUPPORT" mode with CONSULT-III.
3. Touch "START" and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.

CAUTION:
- Never use compressed air or a high pressure pump.
- Never exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in the system.

2. Apply 12 volts DC to EVAP canister vent control valve (1). The valve will close. (Continue to apply 12 volts until the end of test.)
- Illustration shows the view from under the vehicle
- : Vehicle front
- EVAP canister (2)
- EVAP control system pressure sensor (3)
3. Pressurize the EVAP line using pressure pump with 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2, 0.2 to 0.4 psi), then remove pump and EVAP service port adapter (commercial service tool).

CAUTION:
- Never use compressed air or a high pressure pump.
- Never exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in the system.

4. Using EVAP leak detector (commercial service tool), locate the
EVAP leak. For the leak detector (commercial service tool), refer to the instruction manual for more details. Refer to Description and Operation.
OK or NG
OK - GO TO 8.
NG - Repair or replace malfunctioning part.
8.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
- EVAP canister vent control valve is installed properly. Refer to Service and Repair.
- EVAP canister vent control valve. Refer to P0447.
OK or NG
OK - GO TO 9.
NG - Repair or replace EVAP canister vent control valve and O-ring.
9.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 (1)?
- EVAP canister vent control valve (2)
Yes or No
Yes - GO TO 10.
No (With CONSULT-III) GO TO 12.
No (Without CONSULT-III) GO TO 13.
10.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 (With CONSULT-III) GO TO 12.
OK (Without CONSULT-III) GO TO 13.
NG - GO TO 11.
11.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.
12.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve and EVAP service port from EVAP service port.
2. Start engine.
3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode.
4. Touch "Qu" on CONSULT-III screen to increase "PURG VOL C/V" indication to 100%.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
OK or NG
OK - GO TO 15.
NG - GO TO 14.
13.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve and EVAP service port from EVAP service port.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.

Vacuum should exist.

OK or NG
OK - GO TO 15.
NG - GO TO 14.
14.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to [1][2]Diagrams.
OK or NG
OK - GO TO 15.
NG - Repair or reconnect the hose.
15.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to P0444.
OK or NG
OK - GO TO 16.
NG - Replace EVAP canister purge volume control solenoid valve.
16.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to P0182.
OK or NG
OK - GO TO 17.
NG - Replace fuel level sensor unit.
17.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to P0451.
OK or NG
OK - GO TO 18.
NG - Replace EVAP control system pressure sensor.
18.CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. Refer to Description and Operation.
OK or NG
OK - GO TO 19.
NG - Repair or reconnect the hose.
19.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
GO TO 20.
20.CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper connection. For location, refer to Description and Operation.
OK or NG
OK - GO TO 21.
NG - Repair or replace hoses and tubes.
21.CHECK RECIRCULATION LINE
Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and improper connection.
OK or NG
OK - GO TO 22.
NG - Repair or replace hose, tube or filler neck tube.
22.CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to Component Inspection.
OK or NG
OK - GO TO 23.
NG - Replace refueling EVAP vapor cut valve with fuel tank.
23.CHECK FUEL LEVEL SENSOR
Refer to Electrical Component Inspection.
OK or NG
OK - GO TO 24.
NG - Replace fuel level sensor unit.
24.CHECK INTERMITTENT INCIDENT
Refer to Diagnosis Procedure.
INSPECTION END