Test Description
Number(s) below refer to the step number(s) on the Diagnostic Chart.
- 4. Determines if the DTC will set under the conditions present when the DTC was originally stored. If not, the fault is intermittent.
- 6. Checks for a grounded EVAP purge solenoid driver circuit, a faulty EVAP vacuum switch, or a leaking EVAP purge solenoid valve.
DTC P1441 - EVAPORATIVE EMISSION CONTROL SYSTEM CONTINUOUS OPEN PURGE FLOW
| Step |
Action |
Values |
Yes |
No |
| 1 |
Was the "On-Board Diagnostic (OBDII) System Check" performed? |
- |
Go to Step 2 |
Go to On-Board Diagnostic (OBD-II) System Check |
| 2 |
- Ignition "OFF".
- Remove the fuel filler cap.
- Ignition "ON".
- Observe "Fuel Tank Pressure" by Tech 2.
Is Fuel Tank Pressure at the specified value? |
1.5V |
Go to Step 3 |
Go to DTC P0452
or P0453 |
| 3 |
- Re -install the fuel filler cap.
- Pinch the rubber hose between the canister and vent valve.
- Install the EVAP pressure/purge cart J41413 to the EVAP service port.
- Apply the -15 inH2O vacuum.
- Monitor the fuel tank pressure hold the specified value by Tech 2.
Does the fuel tank pressure hold the specified value? |
2.9-3.3V |
Go to Step 4 |
Go to Step 5 |
| 4 |
- Remove the filler cap.
- Make sure the fuel tank vacuum goes to near 1.5V.
- Replace the fuel filler cap.
- Disconnect the rubber hose end of engine vacuum source side, (the hose connected purge solenoid valve and engine).
- Connect the vacuum hand pump to the rubber hose end.
- Apply the vacuum of -15inH2O by the vacuum pump.
- Monitor the fuel tank pressure by Tech 2.
Does the fuel tank vacuum hold the specified value? |
2.9-3.3V |
Go to Step 6 |
Go to Step 5 |
| 5 |
- Check leaks, kinks or pinched hoses at the EVAP system rubber hose line, and also check if the rubber hoses are correctly connected or not.
- Check for a leak from vent solenoid valve and EVAP system rubber hoses, and also check for clogged filter or air separator which is located near vent solenoid valve.
Was a problem found? Using the vacuum hose routing diagram, repair or re -connect the rubber hoses correctly. |
- |
Verify repair |
Go to Step 7 |
| 6 |
Replace the purge solenoid valve. |
- |
Verify repair |
- |
| 7 |
- Start engine.
- Remove the fuel filler cap.
- Using Tech 2, command the EVAP Vent Solenoid valve "ON" (closed) and Purge solenoid valve off (0%).
- Replace the fuel filler cap.
- Run the engine at 2500rpm constant while monitoring "fuel tank vacuum" on Tech 2.
Does the fuel vacuum remain at the specified value while evap vent solenoid valve "on" (closed) and purge solenoid valve off? |
1.5V |
Verify repair |
Go to DIAGNOSTIC AIDS |