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.
Service Check Connector
Service check connector is used when retrieving flash codes for transaxle electronic control system diagnosis. When jumper wire is installed between service check connector terminals, an input is delivered to the PCM to display flash codes through the "D4" indicator light on A/T gear position indicator on instrument panel. See Figure . Service check connector is a Gray 2-pin connector located below right side of dash, above PCM. See Figure .
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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.