Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eg5vzfe cip0505

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                                                                                                                           DI-105
                                                   DIAGNOSTICS          -   ENGINE (5VZ-FE)
                                                                                                                            DI1LY-1 1




    DTC                 P0505                Idle Control System Malfunction

CIRCUIT DESCRIPTION
The idle speed is controlled by the Electric Throttle Control System (ETCS).
ETCS is composed of the throttle motor to operate the throttle valve, the magnetic clutch to connect the
throttle motor with the throttle valve, the throttle position sensor to detect the opening angle of the throttle
valve, the accelerator pedal position sensor to detect the accelerator pedal position, the ECM to control the
ETCS and the one valve type throttle body.
The ECM controls the throttle motor to make the throttle valve opening angle properly for the target idle
speed.
   DTC No.                        DTC Detecting Condition                                                   Trouble Area
                                                                                 S Air induction system
               Idle speed continues to vary greatly from target speed
    P0505                                                                        S Electric throttle control system
               (2 trip detection logic)
                                                                                 S PCV valve and hose


INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected. When troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean
or rich, etc. at the time of the malfunction.

   1        Are there any other codes (besides P0505) being output?


                                                            YES             Go to relevant DTC chart (See page DI-13 ).


   NO



   2        Check connection of PCV valve and hose


                                                             NG             Repair or replace PCV valve and hose


   OK




 2002 4RUNNER (RM887U)

                                                                                  Author :                       Date :     281
DI-106
                                   DIAGNOSTICS   -   ENGINE (5VZ-FE)



   3     Check air induction system (See page SF-1 ).


                                          NG         Repair or replace.


  OK



  Check electric throttle control system (See
  page SF-30 ).




2002 4RUNNER (RM887U)

                                                            Author :      Date :   282

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