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.
2003 Mitsubishi Eclipse RS, StandardFACTORY OEM SERVICE PROCEDURE
Ground Circuits
- Turn ignition off. Backprobe and check for continuity between chassis ground and ECM/PCM ground terminal(s). If continuity exists, go to next step. If continuity does not exist, repair open circuit between ECM/PCM connector and chassis ground. Ensure suspect ground connection is clean and tight.
- Backprobe and measure voltage between chassis ground and ECM/PCM ground terminal(s). With engine operating at normal operating temperature, voltage should be less than one volt. If voltage is more than one volt, check for open, corrosion or loose connection in ground circuit.
Factory Service Tools
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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.
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