Dtc P0505 Idle Control System Malfunction

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
1Az-Fe 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 VENTILATION HOSE CONNECTIONS

CHECK AIR INDUCTION SYSTEM

CHECK THROTTLE VALVE

DTC P0505 Idle Control System Malfunction


DESCRIPTION

The idling speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of: 1) the one valve type throttle body; 2) the throttle actuator, which operates the throttle valve; 3) the throttle position (TP) sensor, which detects the opening angle of the throttle valve; 4) the accelerator pedal position (APP) sensor, which detects the accelerator pedal position; and 5) the ECM, which controls the ETCS. 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
Idle speed continues to vary greatly from target speed (2 trip detection logic)
  1. ETCS
  2. Air induction system
  3. Ventilation hose connections
  4. ECM

INSPECTION PROCEDURE

HINT:
  1. The following conditions may also cause DTC P0505 to be set:
    1. The floor carpet overlapping slightly onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open.
    2. The accelerator pedal being not fully released.
  2. 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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Select the following menu items: Powertrain / Engine and ECT / DTC.

  1. Read DTCs.

    Result:
    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 DTC CHART
A


2.CHECK VENTILATION HOSE CONNECTIONS
OK:
Ventilation hose is connected correctly and is not damaged.


NG
REPAIR OR REPLACE VENTILATION HOSE
OK


3.CHECK AIR INDUCTION SYSTEM

  1. Check the air induction system for vacuum leakage.

    OK:
    No leakage from air induction system.


NG
REPAIR OR REPLACE AIR INDUCTION SYSTEM
OK


4.CHECK THROTTLE VALVE

  1. Check the throttle valve condition.



NG
REPLACE THROTTLE BODY ASSEMBLY
OK

REPLACE ECM