2007 Lexus LX 470FACTORY OEM SERVICE PROCEDURE

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 (throttle position to be slightly open); or 2) the accelerator pedal not being fully released.
  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are 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 CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON.
    3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read the DTCs.

      HINT:

      If any other codes besides P0101 are output, perform troubleshooting for those DTCs first.

      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 RELEVANT DTC CHART 

    A: Go to next step 

  2. CHECK CONNECTION OF VENTILATION HOSE 

    OK: 

    Ventilation hose is connected correctly and is not damaged. 

    NG: REPAIR OR REPLACE VENTILATION HOSE 

    OK: Go to next step 

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

      OK: 

      No leakage from air induction system. 

    NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM 

    OK: Go to next step 

  4. CHECK THROTTLE VALVE 
    1. Check the throttle valve condition.

    NG: REPLACE THROTTLE BODY 

    OK: REPLACE ECM 

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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