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 MANUALSRENAULT198318I 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEM - NON-TURBOTESTINGTESTING SYSTEM WHEN ENGINE WILL NOT STARTIGNITION COIL AND ELECTRONIC CONTROL UNIT CHECK
1983 Renault 18i 4D Sedan, Automatic
Ignition Coil And Electronic Control Unit Check
1983 Renault 18i 4D Sedan, AutomaticSECTION Ignition Coil And Electronic Control Unit Check
- Turn the ignition switch to the "ON" position. Connect positive voltmeter lead to ignition coil positive terminal. Connect remaining lead to ignition coil negative terminal. See Fig 1.
- Quickly move a magnet back and forth over impulse sender coil. If voltmeter needle moves, but engine would not start, replace ignition coil. If needle does not move, replace ignition control unit.
NOTE:
This is only necessary when vehicle will not start, and other tests have been performed.
RENDER: 1.0x
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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.