Honda Accord 2002-2007 ECM/PCM Idle Learn Tutorial

Honda Accord 2002-2007 ECM/PCM Idle Learn Tutorial

ECM/PCM Idle Learn Procedure
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:

  -  The ECM/PCM is replaced.

  -  The ECM/PCM is reset.

     NOTE:  Erasing DTCs with the HDS does not require you to do the idle learn
     procedure.

  -  The throttle body is replaced or cleaned.

Procedure:
  1. Make sure all electrical items (A/C, audio, rear window defogger, lights,
     etc.) are off.
  2. Reset the ECM/PCM with the HDS.
  3. Turn the ignition switch ON (II), and wait for 2 seconds.
  4. Start the engine, and hold it 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).
  5. 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.