Diagnosing Your Illuminated Check Engine Light
At Tom Wood Toyota, our certified and factory-trained technicians use state-of-the-art technology and tools to conduct the proper diagnostic procedures when the check engine light is illuminated that includes several steps:
- Data retrieval - to collect critical data relating to the vehicle's performance, a multi-function scanning tool is used by the service technician to analyze the onboard computer system to retrieve data that includes freeze-frame, various computer codes, sensor data, software version numbers and other status data that will help to identify what triggered the illumination of the check engine light.
- Verification - this test will help to determine if all critical systems are functioning within their expected specifications and includes the analysis of the ignition, emissions and fuel system, electrical and mechanical engine timing, backpressure and engine vacuum. A failure of these systems will result in the illumination of the check engine light.
- Pinpoint - this testing is required by all manufacturers to ensure diagnostic testing that includes a visual inspection of specified areas, bi-directional control tests and analyzing wiring diagrams.
- Verification / Repairs - after the completion of all tests, an additional round of testing is completed to determine if replacement of parts is repairs are required.

Find the Region's Best Service & Parts at Tom Wood Toyota
Whether the reason for the illuminated check light is merely a loose gas cap or a more serious cause, the highly trained service technicians at Tom Wood Toyota specialize in determining the root cause. We offer an early bird service with hours of operation from Monday - Friday 7:30 am - 6:00 pm and Saturdays 8:00 am - 3:00 pm. We proudly serve the Indianapolis, IN and have a state-of-the-art certified collision facility repair center that can service all makes and models of Toyotas. Call Tom Wood Toyota today to schedule an appointment and receive top-notch service that will keep your Toyota on the road for years to come.