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.
1996 Hyundai Elantra GLFACTORY OEM SERVICE PROCEDURE
SFI Control Relay
- Relay is located behind left side of dash. Disconnect relay harness connector and remove relay from holder. Apply battery voltage to terminal No. 4 (positive) and ground terminal No. 2 (negative). See Fig 1 .
- Using a DVOM, check for continuity between terminal No. 1 and terminal No. 5. Continuity should be present. Check for continuity between terminal No. 5 and terminal No. 3. Replace relay if continuity is not present for both checks.
- Disconnect relay harness connector. Using DVOM, check voltage between relay harness connector terminals No. 4 and 5 and vehicle ground. If battery voltage is not present on both terminals, inspect and repair circuit. See appropriate wiring diagram in WIRING DIAGRAMSΒ section.
- Ensure ignition is off. Disconnect ECM harness connector. Connect jumper wire between ECM terminal No. 27 and vehicle ground. See Figure . Using ohmmeter, check resistance between relay harness connector terminal No. 2 and vehicle ground. Continuity should be present. If continuity is not present, inspect and repair circuit as needed.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
