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 - BASIC DIAGNOSTIC PROCEDURESIGNITION CHECKSIGNITION CONTROL MODULEIGNITION CONTROL MODULE (ICM) INPUT TEST (CR-V 2.0L)
1998 Honda Civic DX, 2D Coupe, Automatic
Ignition Control Module (ICM) Input Test (CR-V 2.0L)
1998 Honda Civic DX, 2D Coupe, AutomaticSECTION Ignition Control Module (ICM) Input Test (CR-V 2.0L)
- Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Figure. Turn ignition on. Check for voltage between ground and Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check Black/Yellow wire between fuse No. 9 (15-amp) in underdash fuse/relay box and ICM. See WIRING DIAGRAMS . Repair wire as necessary.
- Turn ignition on. Check for voltage between ground and White/Blue wire. If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil. See IGNITION COIL RESISTANCE TEST . Replace coil as necessary. If ignition coil is okay, check for an open in White/Blue wire between ICM and ignition coil. See WIRING DIAGRAMS .
- Check for continuity in Blue wire between tachometer test connector and ICM. If continuity exists, go to next step. If continuity does not exist, repair open in Blue wire.
- Check for continuity between ground and Blue wire. If continuity exists, repair short to ground in Blue wire. If continuity does not exist, wiring is okay. Replace ICM.
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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.