I had to disconnect battery terminals to clean them and was going to do the relearn. I searched, and flipped through my copy of service manual to no avail.

If I remember correctly the ECU relearning was something like
- Make sure nothing is on or plugged in other than engine (no radio no GPS no cigarette jack acc.)
- Car is up to temperature
- Decelerate from above 3000rpm in 3rd gear and 2nd gear. (gas off, gear in manual mode (I have AT) )

I know I've seen it on this forum and in my book but all I can find is how to reset ECU with gas pedal (which is not what I need.)

Please point me in the right direction or confirm what I remember, thank you very much.

 

Are you referring to the idle relearn procedure after the ecu reset?

 

^yes

 

Cool

Ok OP here's the procedure: (Skip Step 2 since your ECU is already reset or if you want to reset it again via the Pedal procedure then proceed.)

1. Make sure all electrical items (a/c, audio, lights, etc) are off.

2. Reset the ECM/PCM (pulling the power by unplugging the battery works well).

3. Turn the ignition switch ON (II), and wait 2 seconds.

4. 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).

5. Let the engine idle for about 5 minutes with the throttle closed. (NOTE: if the fan comes on, do not include its running time in the 5 minutes.

 

What is the benefit of this procedure>?

 

Sometimes, after a little work that has been done on engine, you could have a high idle.
doing the procedure will reset the idle and bring it back down to normal.