DTC P0505: Idle Control System Malfunction [08/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. 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 → See step   8 

A: Go to next step 

1. Check the PCV hose connections.

   OK

   PCV valve and hose are connected correctly and are not damaged.

NG → REPAIR OR REPLACE PCV HOSE 

OK: Go to next step 

1. Check the intake system for vacuum leaks. Refer to ON-VEHICLE INSPECTION [08/2014 - ] .

   OK

   No leaks from the intake system.

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE INTAKE SYSTEM 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE [08/2014 - ] .
5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

   HINT: 

   The A/C switch and all accessory switches should be off.

6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Throttle Idle Position and MAP.
7. Check that the Throttle Idle Position in ON and check the MAP values in the Data List while performing the Active Test.

   HINT: 

   • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
   • Be sure to return the EGR valve to step 0 when the Active Test is completed.
   • Do not open the EGR valve 30 steps or more during the Active Test.

   OK

   MAP change in response to EGR step position when Throttle Idle Position is ON in Data List.

   Standard

   -	EGR Step Position (Active Test)
   	0 Steps	0 to 30 Steps
   MAP (Data List)	(EGR valve is fully closed)	MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

   HINT: 

   • While performing the Active Test, if the increase in the value of MAP is small, the EGR valve assembly may be a malfunctioning.
   • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of MAP may occur while performing the Active Test. However, the amount that the value of MAP increases will be smaller than normal.

OK → See step   6 

NG → See step   5 

1. Remove the EGR valve assembly. Refer to REMOVAL [08/2014 - ] .
2. Check if the EGR valve is stuck open.

   OK

   EGR valve is tightly closed.

   HINT: 

   Perform "Inspection After Repair" after replacing the EGR valve assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   10 

OK: Go to next step 

1. Check for contamination between the throttle valve and the housing and then check that the throttle valve moves smoothly.

   OK

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

   HINT: 

   Perform "Inspection After Repair" after replacing the throttle body assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   9 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2014 - ] .
5. Turn the power switch off and wait for at least 30 seconds.
6. Turn the power switch on (IG) and turn the Techstream on.
7. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
9. Read the pending DTCs.

   Result

   Result	Proceed to
   DTC P0505 is output	A
   DTC is not output	B

B → END 

A → See step   11