Mode 1 (PCM Adaptive Memory)

Check RFC FLAG PID. If PID is on, go to Mode 2. If PID is off, complete Mode 1 before performing Mode 2 or 3. Connect scan tool. Turn all accessories off. Start engine. Allow engine to reach operating temperature. Ensure idle speed and timing are within specification. With vehicle in Park or neutral, raise engine speed to 2300-2700 RPM for more than 15 seconds. Raise engine speed to 3800-4200 RPM for more than 15 seconds. Release throttle and allow to idle for 20 seconds. Ensure cooling fan does not operate during idle portion of cycle. Turn igintion off. Turn ignition on. Using scan tool, check drive mode completion status. If cycle is not complete, repeat cycle from engine start.