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.
Using On-Board Diagnostics
Turn ignition switch to ON position, with engine off. Press the RESET button of Driver Information Center (DIC) to acknowledge any warning messages present. See Figure . Depress and hold the OPTIONS button. While holding the OPTIONS button, press the FUEL button 4 times within 10 seconds. System will enter into automatic display mode, followed by manual display mode.
During automatic display mode and all modules that communicate on serial data line will be displayed. After each module is displayed, DIC will display the number of current and history DTCs for that system. NO CODES displayed indicates that there are no codes present for that system. NO COMM displayed indicates a communication problem between systems. After all DTCs have been displayed for all systems, DIC will display NO MORE CODES for 2 seconds, then enter into manual display mode.
Manual display mode of DTCs can be entered at any time after entering on-board diagnostics by depressing any button of DIC, except the E/M button. See Figure . Depressing E/M button will exit on-board diagnostics. During manual display mode systems may be selected for viewing by depressing specific buttons of DIC. Depress TRIP button to view previous module. Depress OPTIONS button to view next module. Depress FUEL button to view previous DTC in selected module. Depress GAUGES button to view next DTC in selected module. After retrieving and recording current and history DTCs for Seat Control Module (SCM), perform appropriate diagnostic test for DTC set. See DIAGNOSTIC TROUBLE CODES (DTCS) table.
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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.