Inspection Procedure

HINT:

• The following condition may also cause DTC P0505 to be set:
  1. The throttle valve is not fully closed, (e.g. The accelerator pedal is slightly depressed by something such as a floor carpet overlapping the accelerator pedal.)
• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (See FREEZE FRAME DATA ).

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

      Result 

      RESULT REFERENCE
      
      

      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 TABLE 

   A: Go to Next Step 

2. CHECK PCV HOSE (HOSE CONNECTIONS) 

   OK: 

   PCV hose is connected correctly and is not damaged. 

   NG: REPAIR OR REPLACE PCV HOSE 

   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  )