Inspection Procedure

HINT:

• The following conditions may also cause DTC P0505 to be set:
  1. The floor carpet overlapping onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open.
  2. The accelerator pedal being not fully released.
• Read freeze frame data using the Intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505) 
   1. Connect the Intelligent tester or Techstream to the DLC3.
   2. Turn the engine switch on (IG).
   3. Turn the tester ON.
   4. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
      2. Techstream - Select: Powertrain / Engine / Trouble Codes.
   5. Read DTCs.

      Result 

      ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)
      
      

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

      HINT:

      If any DTCs other than P0505 are output, troubleshoot those DTCs first.

   B: GO TO  DIAGNOSTIC TROUBLE CODE CHART 

   A: GO TO NEXT STEP 

2. CHECK VENTILATION HOSE (HOSE CONNECTIONS) 

   OK: Ventilation hose is connected correctly and is not damaged. 

   NG: REPAIR OR REPLACE VENTILATION HOSE  (See ON-VEHICLE INSPECTION )

   OK: GO TO NEXT STEP 

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

      OK: No leakage from air induction system. 

   NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM 

   OK: GO TO NEXT STEP 

4. CHECK THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) 
   1. Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.

      OK: Throttle valve is not contaminated with foreign objects and moves smoothly. 

   NG: REPLACE THROTTLE BODY (See  REMOVAL  ) 

   OK: REPLACE ECM (See  REMOVAL  )