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 GL, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESDIAGNOSTIC TESTSCODE 14 - THROTTLE POSITION SENSOR FAILUREHARNESS INSPECTION
1994 Hyundai Excel GL, Standard
Harness Inspection
1994 Hyundai Excel GL, StandardSECTION Harness Inspection
- Measure TPS power supply voltage. Disconnect TPS harness connector. Turn ignition on. Using DVOM, measure voltage between TPS harness connector terminal No. 4 (Green/Red wire) and vehicle ground. Voltage should be 4.8-5.2 volts.
- If voltage is not within specification, turn ignition off. Disconnect ECM connector. On all models except Calif. Elantra and Excel, connect jumper wire between ECM harness connector terminal No. 14 (24-pin connector) and vehicle ground. See Figure .
- On Calif. Elantra and Excel, connect jumper wire between ECM harness connector terminal No. 1 (22-pin connector) and vehicle ground. Using ohmmeter, check resistance between TPS harness connector terminal No. 4 (Green/Red wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed. If continuity exists, substitute ECM with known good unit and retest.
- Check continuity of TPS ground circuit. Using ohmmeter, check resistance between TPS harness connector terminal No. 1 (Black wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
- Check continuity of output circuit between TPS and ECM. Ensure ignition is off. On all models except Calif. Elantra and Excel, connect jumper wire between ECM harness connector terminal No. 18 (Light Green/Yellow wire, 24-pin connector) and vehicle ground. See Figure .
- On Calif. Elantra and Excel, connect jumper wire between ECM harness connector terminal No. 20 (22-pin connector) and vehicle ground. Using ohmmeter, check resistance between TPS harness connector terminal No. 3 (Light Green/Yellow wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
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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.