When do you need a computer relearn procedure?
INTRODUCTION Vehicles equipped with engine or transmission/transaxle computers may require a computer relearn procedure after the vehicle battery is disconnected. Vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance.
How do I perform the relearn process?
To perform the relearn process. Set the parking brake and put the vehicle in park. Turn everything off except the engine itself. When the engine reaches operating temperature, let the engine idle at full temperature for one minute. Turn the A/C compressor on and fan on high and allow engine to idle for one minute.
How do you relearn how to drive a car?
Turn the A/C compressor on and fan on high and allow engine to idle for one minute. Release the parking brake and shift to drive with your foot on the brake. Let the engine idle for one minute. Drive the vehicle for at least ten miles to complete the relearn process.
How long does it take for a PCM to relearn its settings?
Press the gas pedal all the way. Wait. Turn key to OFF, position 0. Release the gas pedal. Wait 2 minutes. Start the car and drive. Likewise, how long does it take for a PCM to relearn? It only takes ~30 seconds for the computer to relearn its settings. Generally it’ll idle high during that time (at least on WJ’s) until it learn them.
When do I need to do a computer relearn?
If vehicle battery was disconnected or Powertrain Control Module (PCM) was replaced, driving the vehicle will enable the PCM to perform a computer relearn procedure for obtaining proper driveability. Inform customer that driveability may differ from what they are accustomed to until the PCM completes the computer relearn procedure.
How to do a crank Relearn on a computer?
To perform the relearn, proceed as follows: Connect a scanner to make sure there are no trouble codes stored in the computer’s memory. If there is any power train trouble code other than P1336 (Crankshaft Position Variation not learned), the computer will disable the relearn function until the problem that caused the code has been eliminated.
To perform the relearn process. Set the parking brake and put the vehicle in park. Turn everything off except the engine itself. When the engine reaches operating temperature, let the engine idle at full temperature for one minute. Turn the A/C compressor on and fan on high and allow engine to idle for one minute.
How to do a Relearn on Passkey III?
To perform a relearn on a Passkey III system, make sure there is a fully charged battery in the vehicle. The battery will be used for 30 minutes without the alternator available for charging. Connect a battery charger to the battery to ensure power is available while programming.