P0442

DTC P0442 EVAP CONTROL SYSTEM




On Board Diagnosis Logic
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.

If pressure does not increase, the ECM will check for leaks 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.

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

DTC Confirmation Procedure

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:
- 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-II
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-II.
4. Make sure that the following conditions are met.
COOLAN 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-II.
Follow the instruction displayed.

NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to EC-72, "Basic Inspection". Initial Inspection (Basic Inspection)




6. Make sure that "OK" is displayed.
If "NG" is displayed, refer to "Diagnostic Procedure" below.

NOTE: Make sure 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 on "Driving Pattern" before driving vehicle.

1. Start engine.
2. Drive vehicle according to "Driving Pattern".
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 "Diagnostic Procedure" below.
- If P0441 is displayed on the screen, go to Diagnostic Procedure for DTC P0441.

Diagnostic Procedure

Diagnostic Procedure (Steps 1 - 4):

Diagnostic Procedure (Step 5):

Diagnostic Procedure (Step 6):

Diagnostic Procedure (Steps 7 - 9):

Diagnostic Procedure (Steps 10 - 13):

Diagnostic Procedure (Steps 14 - 20):

Diagnostic Procedure (Steps 21 - 25):

Component Inspection

WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.




4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.
5. In case of NG in items 2 - 4, replace the parts.

NOTE: Do not disassemble water separator.