Have the diagnostic fault codes read. Most auto parts stores will do that for you for free. Those codes will indicate the circuit or system that needs further diagnosis or the unacceptable operating condition.
Sep 5, 2014 at 8:57 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.