SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2000
GROUP
Fuel System MFI Control System
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CIRCUIT DIAGRAM 
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CIRCUIT INSPECTION (ENGINE CONTROL MODULE) 
TROUBLESHOOTING HINTS
  • If the ground wire of the ECM is not connected securely to ground, the ECM will not operate correctly.
  • If we replace ECM ROM without further diagnosis, the problem may reoccur.
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HARNESS INSPECTION PROCEDURE 
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ENGINE CONTROL MODULE (ECM) 

Check the internal control module ROM/RAM error.