Inspection Procedure

HINT:

• The detection of DTC P0505 may also be caused by: 1) the floor carpet overlapping onto the accelerator pedal, causing the accelerator pedal to be slightly depressed (TP to be slightly open); or 2) the accelerator pedal not being fully released.
• 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: Display DTC Output Chart

   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  REPLACEMENT  ) 
   2. OK: Go to next step. 

      REPLACE ECM (SEE  REPLACEMENT  )