Drive Mode 1 - PCM Adaptive Memory
Start engine and warm to normal operating temperature. Ensure following conditions:
- All electrical and A/C loads are off.
- Ignition timing and idle speed are within specification. Adjust as necessary. SeeBASIC DIAGNOSTIC PROCEDURES article.
- Underhood DLC-1 "GND" and "TEN" terminals are not connected.
If possible, use scan tool to monitor RPM PID and cooling fan status. Increase engine RPM as specified. SeeFig 1. Operate engine for more than 15 seconds at each specified RPM. Idle engine for more than 20 seconds when cooling fan stops.