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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1NZ-FXE) >> SFI System >> DTC P0505 Idle Control System Malfunction >> Inspection Procedure
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Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0505) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the power switch ON (IG).
    3. Turn the intelligent tester ON.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    5. Read DTCs.

      Result 

      RESULT REFERENCE

      Display (DTC output) Proceed to
      P0505 A
      P0505 and other DTCs B

      HINT:

      If any other codes besides P0505 are output, perform troubleshooting for those DTCs first.

    B : GO TO RELEVANT DTC CHART 

    A : Go to Next Step 

  2. CHECK CONNECTION OF PCV HOSE 

    OK : PCV hose is connected correctly and has no damage. 

    NG : REPAIR OR REPLACE PCV HOSE 

    OK : GO TO NEXT STEP 

  3. CHECK AIR INDUCTION SYSTEM 
    1. Check for vacuum leaks in the air induction system.

      OK : No leakage in the air induction system. 

    NG : REPAIR OR REPLACE AIR INDUCTION SYSTEM 

    OK : CHECK ELECTRIC THROTTLE CONTROL SYSTEM