This bulletin applies to 2004-2013 Acura TL vehicles. If you’ve just cleaned the throttle body but now have an MIL on with DTC P2279 (intake air system leak), MIL on with P0507 (idle control system rpm higher than expected) and/or a fluctuating idle, it’s likely that the throttle plate is now in a different position from the one that the ECM/PCM had learned.
In order to fix the problem, the ECM/PCM needs to relearn the current closed throttle position.
1. Go to Inspection Menu in the HDS and select ETCS Test.
2. Select TP Position Check and clear the throttle position learned value.
3, Turn off the ignition, and then turn it back on.
4. Reset the ECM/PCM.
5. Perform the idle learn procedure.
6. Recheck for DTCs. If the previous DTCs do not reset, you’re done.