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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSHYUNDAI2003ELANTRA GT, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEFUEL DELIVERYENGINE CONTROLS - SYSTEM & COMPONENT TESTINGCOMPUTERIZED ENGINE CONTROLSPOWERTRAIN CONTROL MODULE/ENGINE CONTROL MODULE (PCM/ECM)GROUND CIRCUITS
2003 Hyundai Elantra GT, 4D Sedan, Standard
Ground Circuits
2003 Hyundai Elantra GT, 4D Sedan, StandardSECTION Ground Circuits
- Turn ignition off. Check resistance between chassis ground and PCM/ECM ground terminals. See PCM/ECM GROUND TERMINAL IDENTIFICATION table. If less than 2 ohms exists, go to next step. If more than 2 ohms exists, repair wire(s) between PCM/ECM and ground.
- Connect voltmeter negative lead to chassis ground. Connect positive lead to each ECM ground terminal. See PCM/ECM GROUND TERMINAL IDENTIFICATION table. With engine running, voltmeter should indicate less than one volt. If voltmeter indicates greater than one volt, check for open, corrosion or loose connection in ground circuit.
PCM/ECM GROUND TERMINAL IDENTIFICATION
| Application | (1) PCM/ECM Connector Terminals No. (Wire Color) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Accent | (2) 3, 51, 53, 61, 78 & 80 (BLK) | |||||||||||
| Elantra | (3) 1 & 2 (BLK) | |||||||||||
| Santa Fe (2.4L) | ||||||||||||
| C21-2 (A/T) | (4) 2 & 8 (BLK) | |||||||||||
| C22-1 (M/T) | (4) 13 & 26 (BLK) | |||||||||||
| C22-4 (M/T) | (4) 21 (BLK) | |||||||||||
| Santa Fe (2.7L) | ||||||||||||
| C23-1 | (4) 4, 5 & 6 (BLK) | |||||||||||
| C23-5 | (4) 5 (BLK) | |||||||||||
| Santa Fe (3.5L) | (5) | |||||||||||
| Sonata (2.4L) | ||||||||||||
| C44-2 (A/T) | (4) 2 & 8 (BLK) | |||||||||||
| C45-1 (M/T) | (4) 13 & 26 (BLK) | |||||||||||
| C45-4 (M/T) | (4) 21 (BLK) | |||||||||||
| Sonata (2.5L) | ||||||||||||
| C94-1 | (4) 4, 5 & 6 (BLK) | |||||||||||
| C94-5 | (4) 5 (BLK) | |||||||||||
| Tiburon (2.0L) | (2) 6, 28, 34 & 55 (BLK) | |||||||||||
| Tiburon (2.7L) | ||||||||||||
| C133-1 | (3) 4, 5 & 6 (BLK) | |||||||||||
| C133-5 | (3) 5 (BLK) | |||||||||||
| XG350 (3.5L) | ||||||||||||
| C44-2 | (4) 2 & 8 (BLK) | |||||||||||
| C44-3 | (4) 6 & 27 (BLK/WHT) | |||||||||||
|
||||||||||||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.