Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.