DTC P0505 Idle Control System Malfunction
DESCRIPTION
The idling speed is controlled by the ETCS (Electronic Throttle Control System). 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.
MONITOR DESCRIPTION
The ECM monitors the idling speed and idling air flow volume to conduct Idle Speed Control (ISC). The ECM determines that the ISC system is malfunctioning if the following conditions are met:
Example: If the actual idling speed varies from the target idling speed by more than 200 rpm* 5 times in a drive cycle, the ECM illuminates the MIL and sets the DTC.
*: Threshold idling speed varies according to the engine load.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
HINT:
(b)The accelerator pedal being not fully released.
1 CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)
Result
HINT: If any DTCs other than P0505 are output, troubleshoot those DTCs first.
2 CHECK PCV HOSE CONNECTIONS
OK: PCV hose is connected correctly and is not damaged.
3 CHECK INTAKE SYSTEM
OK: No leakage from intake system.
4 CHECK THROTTLE VALVE
OK: No foreign objects between the throttle valve and housing.
REPLACE ECM
Adjusting the set speed
To change the set speed, operate the lever until the desired set speed
is obtained.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired direction.
Large adjustment: Hold the lever in
the desired direction.
The set speed will be incre ...
Rear Occupant Classification Sensor LH Collision
Detection
DTC B1787 Rear Occupant Classification Sensor LH Collision
Detection
DESCRIPTION
DTC B1787 is output when the occupant classification ECU receives a collision
detection signal sent by
the rear occupant classification sensor LH if an accident occurs.
DTC B1787 is also output when the front s ...
Diagnostic trouble code chart
If a trouble code is displayed during the DTCs check (sensor
check), check the circuit listed for the code in the table below
(Proceed to the page given for that circuit).
AIR CONDITIONING SYSTEM
HINT:
*1: If the cabin temperature is approximately -18.6°C (-
3.7°F) or lo ...