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DTC Diagnosis Procedure
1.INSPECTION START
Do you have M.U.T.-III SE?
Do you have M.U.T.-III SE?
.
.
 
2.CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With M.U.T.-III SE
  1. Turn ignition switch OFF and then turn ON.
  2. Select "VENT CONTROL/V" in "Actuator Test" (in "Special Function") mode of "ENGINE" using M.U.T.-III SE.
  3. Touch “ON/OFF” on M.U.T.-III SE screen.
  4. Check for operating sound of the valve.
    Clicking sound should be heard.
Is the inspection result normal?
.
.
 
3.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY
  1. Turn ignition switch OFF.
  2. Disconnect EVAP canister vent control valve harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between EVAP canister vent control valve harness connector and ground.
    +−Voltage
    EVAP canister vent control valve
    ConnectorTerminal
    C521GroundBattery voltage
Is the inspection result normal?
.
.
 
4.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between EVAP canister vent control valve harness connector and IPDM E/R harness connector.
    +−Continuity
    EVAP canister vent control valveIPDM E/R
    ConnectorTerminalConnectorTerminal
    C521F3578Existed
  4. Also check harness for short to ground.
Is the inspection result normal?
Perform the trouble diagnosis for power supply circuit.
Repair or replace error-detected parts.
 
5.CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between EVAP canister vent control valve harness connector and ECM harness connector.
    +−Continuity
    EVAP canister vent control valveECM
    ConnectorTerminalConnectorTerminal
    C522E16149Existed
  4. Also check harness for short to power.
Is the inspection result normal?
.
Repair or replace error-detected parts.
 
6.CHECK RUBBER TUBE FOR CLOGGING
  1. Disconnect rubber tube connected to EVAP canister vent control valve.
  2. Check the rubber tube for clogging.
Is the inspection result normal?
.
Clean the rubber tube using an air blower.
 
7.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the EVAP canister vent control valve. Refer to Component Inspection.
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
Replace EVAP canister vent control valve. Refer to Removal and Installation.