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.
TDC Offset Programming
This procedure allows the PCM memory to be updated with the correct top dead center offset for the vehicle. DTC 88 will be stored until this procedure has been completed.
Ensure that battery is charged. Run engine at idle until it is at operating temperature. Connect TECH-1 scan tool. Select OUTPUT TESTS and INJ. PUMP. Start TDC LEARN. Run LEARN for 20 seconds. Verify TDC OFFSET in data list.
If TDC OFFSET is not programmed perform the following:
- Check all PCM connections.
- Check Techline for latest software version.
- Try to program PCM again.
If PCM does not accept programming, replace PCM.
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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.