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HOMESERVICE MANUALSHYUNDAI2003ACCENT BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMSELF-DIAGNOSTICSSELF-DIAGNOSTIC SYSTEMTESTING PROCEDURE
2003 Hyundai Accent Base

Testing Procedure

2003 Hyundai Accent BaseSECTION Testing Procedure
NOTE: Before performing testing procedures, check for any related Technical Service Bulletin (TSB).

Diagnosis of computerized engine control system should be performed in the following order:

  1. Perform visual inspection. Most driveability problems in the engine control system result from faulty wiring, poor electrical connections or leaking air and vacuum hose connections. To avoid unnecessary component testing, perform a visual inspection before beginning self-diagnostic tests.
  2. Ensure all mechanical engine systems other than computerized systems (i.e., compression, ignition, etc.) are operating properly. DO NOT proceed with testing unless all other problems have been repaired. If MIL is on, see RETRIEVING DIAGNOSTIC TROUBLE CODES . After retrieving DTCs, see DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  3. After repairs have been completed, see AFTER-REPAIR PROCEDURE .
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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.