Dtc P0505 Idle Control System Malfunction

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
3Zr-Fae Engine Control System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)

CHECK PCV HOSE CONNECTIONS

CHECK INTAKE SYSTEM

CHECK THROTTLE VALVE

DTC P0505 Idle Control System Malfunction


DESCRIPTION

The idling speed is controlled by the electronic throttle control system. The electronic throttle control system is comprised of: 1) a one valve type throttle body; 2) the throttle actuator, which operates the throttle valve; 3) the throttle position sensor, which detects the opening angle of the throttle valve; 4) the accelerator pedal position sensor, which detects the accelerator pedal position; and 5) the ECM, which controls the electronic throttle control system. Based on the target idling speed, the ECM controls the throttle actuator to provide the proper throttle valve opening angle.

DTC No.
DTC Detection Condition
Trouble Area
P0505
The idle speed continues to vary greatly from the target speed (2 trip detection logic).
  1. Electronic throttle control system
  2. Intake system
  3. PCV hose connection
  4. ECM

INSPECTION PROCEDURE

HINT:
  1. The following condition may also cause DTC P0505 to be stored:
    1. The throttle valve is not fully closed (e.g. the accelerator pedal is slightly depressed by something such as the floor carpet overlapping the accelerator pedal).
  2. 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 help determine if the vehicle was moving or stationary, 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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    DTC P0505 is output
    		A
    DTC P0505 and other DTCs are output
    		B

    HINT:
    If any DTCs other than P0505 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (RAV4_ACA30 RM000000PDF07OX.html)
A


2.CHECK PCV HOSE CONNECTIONS

  1. Check the PCV hose connection (RAV4_ACA30 RM0000012OO02QX_01_0003.html).

    OK:
    PCV hose is connected correctly and is not damaged.


NG
REPAIR OR REPLACE PCV HOSE
OK


3.CHECK INTAKE SYSTEM

  1. Check the intake system for vacuum leakage (RAV4_ACA30 RM00000341000BX.html).

    OK:
    No leakage from intake system.


NG
REPAIR OR REPLACE INTAKE SYSTEM
OK


4.CHECK THROTTLE VALVE

  1. Check the throttle valve condition (RAV4_ACA30 RM000002WZX01AX.html).

    OK:
    Throttle valve is not contaminated with foreign objects and moves smoothly.


NG
REPLACE THROTTLE BODY ASSEMBLY (RAV4_ACA30 RM000002WZZ01HX.html)
OK

REPLACE ECM (RAV4_ACA30 RM0000017UO01KX.html)