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Home >> Genesis >> 2017 >> G80 5.0 Ultimate >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Control System >> Transmission Control Module (TCM) >> Repair Procedures >> Inspection >> TCM Problem Inspection Procedure
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TCM Problem Inspection Procedure

  1. TEST TCM GROUND CIRCUIT: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point. If the problem is found, repair it.

    Specification: Below 1Ω 

  2. TEST TCM CONNECTOR: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
  3. If any problems are not found in Step  1 and  2, the TCM could be faulty. If so, make sure there are no DTCs before replacing the TCM with a new one, and then check the vehicle again. If DTCs are found, examine this first before replacing TCM.
  4. RE-TEST THE ORIGINAL TCM: Install the original TCM (with possible fault) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original TCM with a new one. If problem does not occur, this is an intermittent problem (Refer to "Intermittent Problem Inspection Procedure" in Basic Inspection Procedure).
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