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 STARTIMPULSE SENDER COIL CHECK
1983 Renault 18i 4D Sedan, Automatic
Impulse Sender Coil Check
1983 Renault 18i 4D Sedan, AutomaticSECTION Impulse Sender Coil Check
NOTE:
Do not use a test light to check distributor impulse sender coil. High voltage may damage the coil.
- Be sure impulse sender coil feed wires have not been cut. Disconnect the 5-wire relay connector and the 3-wire distributor connector (2 black wires, 1 gray). See Fig 1.
- Connect lead of an ohmmeter to terminal 5 of the 5-wire relay harness connector. Connect the other ohmmeter lead to the double black wire terminal of distributor connector. The needle should move. If not, replace impulse sender coil.
- To check impulse sender coil for shorts, connect ohmmeter lead to terminal 5 with second ohmmeter lead connected to distributor body. The needle should not move. If it does, replace impulse sender coil.
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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.