Inspection Procedure

HINT:

• When the throttle position is slightly opened (the accelerator pedal is slightly depressed) because a floor carpet is overlapped on the accelerator pedal, or if not fully releasing the accelerator pedal, etc., DTC P0505 will possibly be detected.
• Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions when a 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) 
   Fig 1: Checking Other DTC Output (In Addition To DTC P0505)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. B: GO TO RELEVANT DTC CHART (See  DIAGNOSTIC TROUBLE CODE CHART   ) 
   2. A: GO TO NEXT STEP. 
2. CHECK CONNECTION OF PCV HOSE 
   1. NG: REPAIR OR REPLACE PCV HOSE 
   2. OK: GO TO NEXT STEP. 
3. CHECK AIR INDUCTION SYSTEM 
   1. NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM 
   2. OK: GO TO NEXT STEP. 
4. CHECK THROTTLE VALVE 

   Check the throttle valve condition.

   1. NG: REPLACE THROTTLE BODY ASSY (See ) 
   2. OK: Go to next step. 

   REPLACE ECM (See  REPLACEMENT  )