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DTC P04E0: Evaporative emission purge solenoid stuck closed
 
 
 
 
CIRCUIT OPERATION
  • MFI relay is built into the IPDM E/R.
  • Power is supplied to the evaporative emission purge solenoid connector terminal from the MFI relay connector terminal number 2.
  • The ECM connector terminal number 14 makes the power transistor in the unit be in ON position, and that makes currents go on the evaporative emission purge solenoid connector terminal number 1.
 
 
TECHNICAL DESCRIPTION
During the key-off evaporative leakage monitoring, when evaporative emission canister pressure does not become atmospheric pressure at opening to atmosphere with opened evaporative emission purge solenoid, it is judged as evaporative emission purge solenoid stuck close.
 
 
MONITOR EXECUTION
Once per driving cycle.
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Evaporative emission purge solenoid monitor
  • Bypass valve monitor
  • Fuel tank solenoid valve monitor
  • Switching valve monitor
  • Canister pressure sensor monitor
  • Manifold absolute pressure sensor monitor
  • Fuel tank pressure sensor monitor
  • Fuel tank differential pressure sensor monitor
  • Barometric pressure sensor/Manifold absolute pressure correlation
  • Barometric pressure sensor monitor
  • Fuel level sensor monitor
  • Engine off timer monitor
  • Controller area network (CAN) monitor
Sensor (The sensor below is determined to be normal)
  • Engine coolant temperature sensor
  • Intake air temperature sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • Power supply mode of electric motor switch is OFF.
  • 12V battery positive voltage is 11.0 volts or higher.
  • Engine coolant temperature is higher than 4°C (39°F) and lower than 35°C (95°F).
  • Intake air temperature at ECM wake-up is higher than 4°C (39°F) and lower than 35°C (95°F).
  • ECM is woken up in 5, 6 or 8.5 hours since the power supply mode of electric motor switch was OFF.
  • Barometric pressure is 76 kPa (22.4 in.Hg) or higher.
  • Fuel level is 85 percent or less.
  • Fuel tank pressure at ECM wake-up is less than 19.96 kPa (5.89 in.Hg) or more than 40.00 kPa (11.81 in.Hg).
  • Accumulated time that power supply mode of electric motor switch is ON is more than 27 minutes.
Judgment Criterion
  • The canister pressure subtracted from the barometric pressure is more than specified pressure for 20 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
Prohibit introduction of purges.
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 4 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • Purge line is clogged.
  • Evaporative emission purge solenoid stuck closed.
  • Open or shorted evaporative emission purge solenoid circuit, harness damage or connector damage.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Using scan tool (M.U.T.-III SE), read the DTC.
Use scan tool (M.U.T.-III SE) to check and see if a DTC P0458-00 or P0459-00 is set.
Q: Is DTC P0458-00 or P0459-00 set?
Perform troubleshooting for the evaporative emission purge solenoid circuit (Refer to DTC P0458-00: Purge control solenoid valve circuit low input DTC P0458-00: Purge control solenoid valve circuit low input, and Refer to DTC P0459-00: Purge control solenoid valve circuit high input DTC P0459-00: Purge control solenoid valve circuit high input).
 
2.STEP 2. Check evaporative emission purge solenoid for leaks.
Check evaporative emission purge solenoid itself (Refer to ENGINE, Engine, Motor and Emission Control – Emission Control – Evaporative Emission System EVAPORATIVE EMISSION PURGE SOLENOID CHECK).
Q: Does the evaporative emission purge solenoid hold pressure?
Replace the evaporative emission purge solenoid (Refer to ENGINE, Intake and Exhaust – Intake Manifold INTAKE MANIFOLD REMOVAL AND INSTALLATION).
 
3.STEP 3. Check harness between evaporative emission purge solenoid connector terminal number 1 and ECM connector terminal number 14.
Check output line for damage.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
4.STEP 4. Check harness between IPDM E/R connector terminal number 66 and evaporative emission purge solenoid connector terminal number 2.
Check power supply line for damage.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
5.STEP 5. Check piping clogging between the evaporative emission purge solenoid and bypass valve.
(1) Disconnect the tube D in the bypass valve.
(2) Disconnect the hose B from evaporative emission purge solenoid and mount the hand vacuum pump on the hose side.
(3) When negative pressure is applied with the hand vacuum pump, check that there is ventilation and no clogging.
Q: Are the hoses, tubes and pipes in good condition?
Repair or replace the hose, tube or pipe.
 
6.STEP 6. Check hose A clogging between the evaporative emission purge solenoid and intake manifold.
Remove the hose A, and use a hand vacuum pump to check hose A.
Q: Is the hose A in good condition?
Repair or replace the hose A.
 
7.STEP 7. Using scan tool (M.U.T.-III SE) to check the data list, after perform the evaporative emission system monitor test.
(1) Perform the evaporative emission system monitor test (Refer to EVAPORATIVE EMISSION CONTROL SYSTEM MONITOR TEST).
(2) Use scan tool (M.U.T.-III SE) to check the data list (Refer to DATA LIST REFERENCE TABLE).
  • Item number 570: Purge valve stuck closed NG
Q: Is the check result normal?
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).