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 MANUALSHYUNDAI1994EXCEL GS, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESSELF-DIAGNOSTIC SYSTEMRETRIEVING CODES (NON-SCAN)
1994 Hyundai Excel GS, Automatic
Retrieving Codes (Non-Scan)
1994 Hyundai Excel GS, AutomaticSECTION Retrieving Codes (Non-Scan)
- Before entering on-board diagnostics, refer to SERVICE PRECAUTIONS. Turn ignition switch to OFF position. Locate Data Link Connector (DLC), next to fuse block. Connect voltmeter positive lead to Data Link Connector (DLC) MFI diagnosis terminal and negative lead to ground terminal. See Fig 1 .
- Turn ignition switch to ON position. Voltmeter (analog) will display trouble codes by 12-volt pulses of voltmeter needle. Trouble codes are retrieved in numerical order. A constant repetition of short 12-volt pulses indicates system is normal. If system is abnormal, voltmeter will pulse between zero and 12 volts.
- Codes will appear on voltmeter as long and short 12-volt pulses. Long pulses represent tens; short pulses represent ones. For example: 4 long pulses and 3 short pulses indicate Code 43. After recording fault code(s), perform necessary repair(s) to indicated circuit(s). See FAULT CODES.
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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.