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.
Circuit Description
PCM has the capability of running a "Customer Snapshot" function to aid in diagnosing intermittent problems. With this feature, the technician has the ability to capture engine general information parameters when experiencing driveability concerns to aid in diagnosis. If vehicle is equipped with cruise control, activation of the function is accomplished simply by toggling the on/off cruise control switch 3 times within 3 seconds. The PCM looks for 3 transitions either off or on within 3 seconds to capture the data. The PCM then sets DTC and information is stored in the malfunction history. The malfunction history can be accessed using a scan tool. The PCM will only allow one snap shot per ignition cycle.
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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.