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Home >> Oldsmobile >> 1993 >> Cutlass Supreme Base, 3.4 X >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Data Link Communications System >> Trouble Shooting >> ECM Data Line

ECM Data Line

  1. If all components cannot be accessed with a scan tool, check the Orange 461 circuit wire for an open between the DLC terminal No. M and S144.See WIRING DIAGRAMS  .
  2. If a single component cannot be accessed with a scan tool, check the Orange 461 circuit wire for an open between the component and S144.