Code No. P0459: Purge Control Solenoid Valve Circuit High Input




OPERATION




FUNCTION




TROUBLE JUDGMENT


Check Conditions
Judgement Criteria
Check Conditions
Judgement Criterion

FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III actuator test



  • Item 10: Purge control solenoid valve
OK: Operating sound can be heard and the valve vibrates

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.

STEP 2. Perform resistance measurement at purge control solenoid valve connector.



  • Disconnect connector, and measure at solenoid valve side.
  • Resistance between terminals.
OK: 22 - 26 Ω (at 20°C)

Q. Is the check result normal?

Go to Step 3.
Repair or replace the connector, or replace the purge control solenoid valve.

STEP 3. Perform voltage measurement at engine-ECU connector.



  • Disconnect connector, and measure at harness side.
  • Ignition switch: "ON"
  • Voltage between terminal PURG and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 4.

    Repair or replace the connector, or check and repair harness between purge control solenoid valve connector terminal and engine-ECU connector terminal PURG.

    • Check output line for short circuit.

STEP 4. Check harness between purge control solenoid valve connector terminal and engine-ECU connector terminal PURG.



  • Check output line for damage.

Q. Is the check result normal?

Go to Step 5.
Repair or replace the connector, or repair the damaged harness wire.

STEP 5. M.U.T.-III actuator test



  • Item 10: purge control solenoid valve
OK: Operating sound can be heard and the valve vibrates

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the engine-ECU.