ECM/PCM Idle Learn Procedure
WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
The idle learn procedure must be done so the ECM/PCM can learn the engine idle characteristics.
Do the idle learn procedure whenever you do any of these actions:
- Replace the ECM/PCM.
- Reset the ECM/PCM.
- Update the ECM/PCM.
- Replace or clean the throttle body.
NOTE:
Clearing the DTCs with the HDS does not require you to do the idle learn procedure.
Procedure
- Make sure all electrical items (A/C, audio, lights, etc.) are off.
- Reset the ECM/PCM with the HDS.
- Turn the ignition switch ON (II), and wait 2 seconds.
- Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, or until the engine coolant temperature reaches 194°F (90°C).
- Let the engine idle for about 5 minutes with the throttle fully closed.NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.