P0441
Connectors:
TECHNICAL DESCRIPTION
- ECM
- Stuck open of evaporative emission purge solenoid valve is judged through monitoring leak of evaporative emission control system.
- Stuck close of evaporative emission ventilation solenoid valve is judged after 20 seconds of end of monitoring leak of evaporative emission control system, or of usual operation of evaporative emission purge solenoid from ON to OFF
DTC SET CONDITIONS
Check Conditions
- ON duty cycle of the evaporative emission purge solenoid is 0 percent.
- 20 seconds have elapsed from the time the duty cycle of the evaporative emission purge solenoid has turned to 0 percent.
Judgment Criteria
- The pressure in the fuel tank is 2 kPa (0.29 psi) or less.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Evaporative emission purge solenoid failed.
- Evaporative emission ventilation solenoid failed.
- Choking up of hose between evaporative emission canister and evaporative emission ventilation solenoid.
DIAGNOSIS
Required Special Tool:
- MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check actuator test item 08: Evaporative Emission Purge Solenoid.
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991502 to the actuator test mode for item 08, Evaporative emission purge solenoid.
- An operation sound should be heard and vibration should be felt when the evaporative emission purge solenoid is operated.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES: Go to Step 2.
NO: Replace the evaporative emission purge solenoid. Then go to Step 4.
STEP 2. Using scan tool MB991502, check actuator test item 29: Evaporative Emission Ventilation Solenoid.
1. Turn the ignition switch to the "ON" position.
2. Set scan tool MB991502 to the actuator test mode for item 29, Evaporative emission ventilation solenoid.
- An operation sound should be heard and vibration should be felt when the evaporative emission ventilation solenoid is operated.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES: Go to Step 3.
NO: Replace the evaporative emission ventilation solenoid. Then go to Step 4.
STEP 3. Check for clogging in the vent hose and air filter
Q: Are there any clogs?
YES: Repair or replace it. Then go to Step 4.
NO: Refer to, DTC P0451 - Evaporative Emission Control System Pressure Sensor Range/Performance, DTC P0452- Evaporative Emission Control System Pressure Sensor Low Input, DTC P0453 - Evaporative Emission Control System Pressure Sensor High Input.
STEP 4 Test the OBD-II drive cycle.
1. Carry out a test drive with the drive cycle pattern. Refer to, Procedure 1 - Evaporative Emission Control System Leak Monitor.
2. Read the diagnostic trouble code.
Q: Is diagnostic trouble code P0441 set?
YES: Retry the troubleshooting.
NO: This diagnosis is complete.