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.
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HOMESERVICE MANUALSHONDA1998CIVIC DX, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTINGCOMPUTERIZED ENGINE CONTROLSPOWERTRAIN CONTROL MODULEGROUND CIRCUITS
1998 Honda Civic DX, 2D Coupe, Automatic
Ground Circuits
1998 Honda Civic DX, 2D Coupe, AutomaticSECTION Ground Circuits
- Measure resistance to ground at appropriate PCM ground terminals. See POWER & GROUND CIRCUIT TERMINAL IDENTIFICATION . See Figure . Resistance should be zero ohms for each circuit. If resistance is not zero ohms, repair open to ground.
- To check voltage drop on ground circuit, connect negative lead of DVOM to a good ground. Connect positive lead to each ground terminal. With engine running, voltmeter should indicate less than 0.1 volt. If voltage is more than 0.1 volt, check for open, corrosion, or loose connection on ground lead. See WIRING DIAGRAMS article.
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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.