![]() ![]() Honda Calculator software download link: MAF Sensor/IAT (Mass Airflow/Intake Air Temperature)Honda HDS IMMO PCM Code Calculator, which along with a USB key and use to calculate pin code for both new and old Honda vehicle.ġ.Connect the USB dongle to the computer, software no need install, its plug and play.Ģ.Download software to run together with USB dongle. These items are in addition to the list in the Procedure:Īny ECT Sensor (Engine Coolant Temperature) There are 3 types of PCM resets from the HDS (Honda Data System) and it has a KAM (Keep Alive Memory) so disconnecting the battery does not lose DCTs (Diagnostic Trouble Codes) or Readiness Codes, only parameters it determines from operating. Is it OK to perform the procedure with a warm engine? Let it cool to 122° F.ĭoes disconnecting the battery erase Ready Codes? No. Searched the Service Manual for "Idle Learn Procedure" and found many instances and answers to a few questions. I do not "Know" for sure, but maybe we can figure it out with logic? I will report but not likely until it warms up and the snow and ice go away. I will take the tool for the battery with me so I can do it as soon as I shut it off. I just rered both pages in the Service Manual referenced above and both are silent on this question.Īs a policy, I do the procedure twice a year because it seems to run better and get better mileage. I have not heard the vehicle needs to be cool or cold. The ILP results in good idling in the few minutes. It takes some driving for the idling to settle. My experience with an '07 and a '10 is that resetting the PCM by removing the battery negative cable for a few minutes results in improved performance in all regimes except idling. I have only the paper version and have not and will not likely ever read every page. Perhaps someone with the Service Manual on line can do a search and find out? This thinking has suggested we have no clue how many other places other conditions are listed? ![]() The procedure for changing the air filter ads the air filter: The Procedure includes these conditions when it is "required": I did this to my '07 and to my surprise it did idle a little rough at first and smoothed out during the procedure.Ĭlick to expand.I do not "Know" for sure, but maybe we can figure it out with logic? NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes." Let the engine idle for about 5 minutes with the throttle fully closed. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, or until the coolant temperature reaches 194 degrees F (90 degrees C).ĥ. Turn the ignition switch to ON (II), and wait 2 seconds.Ĥ. Make sure all electrical items (A/C, audio, lights, etc.) are off.ģ. NOTE: Clearing the DTC's with the HDS does not require you to do the idle learn procedure.ġ. Disassemble the engine or the transmission. The idle learn procedure must be done so the PCM can learn the engine idle characteristics.ĭo the idle learn procedure whenever you do any of these actions: **Note:** Disconnecting the battery for a few minutes will also reset the PCM but doing so will cause you to have to reenter the radio code and perhaps stations. "If you replace the air cleaner element, reset the PCM with the HDS, and do the PCM idle learn procedure (see page 11-250)." ![]() Volume 1, page 11-284, step 5., third bullet says: ![]() Who would have thought? Me neither until I read the procedure to replace the air filter. ![]()
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