DTC P0505: Idle Control System Malfunction: Procedure

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

Read DTCs.

RESULT

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

HINT:

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

B → See step 7

A: Go to next step

CHECK PCV HOSE CONNECTIONS
1. Check the PCV hose connections.
  OK
  
  PCV hose is connected correctly and is not damaged.
NG → REPAIR OR REPLACE PCV HOSE

OK: Go to next step
CHECK AIR INDUCTION SYSTEM
1. Check the air induction system for vacuum leak.
  OK
  
  No leak from air induction system.
NG → REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: Go to next step
INSPECT THROTTLE VALVE
1. Check the throttle valve condition.
NG → See step 8

OK: Go to next step
REPLACE ECM
1. Replace the ECM. Refer toREMOVAL .
NEXT: Go to next step

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

NOTE:

In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data).

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs. Refer toREMOVAL .
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the Techstream on.
Start the engine and warm it up.
Refer to CONFIRMATION DRIVING PATTERN the confirmation driving pattern.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P0505.

Check the DTC judgment result.

RESULT

Tester Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
UNKNOWN	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

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