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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Engine Control System Diagnosis - 3.3L (9 Of 9)) >> DTC U0101-00: Lost Communication with TCM >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Connect GDS and select "Diagnostic Trouble Codes (DTC)" mode.
  2. IG "ON".
  3. Using a GDS, Clear DTC.
  4. IG "OFF".
  5. Disconnect ECU's connector connected to P-CAN bus.
  6. IG "ON".
  7. Connect GDS and select "Diagnostic Trouble Codes (DTC)" mode.
  8. Are any DTCs present?

    YES 

    • Go to step  1 of the component inspection and disconnect another ECU's connector connected to CAN bus in step 5.
    • Repeat above step until test completed on all ECU in CAN bus.
    • If DTC is present after above test, substitute with a known-good TCM and check for proper operation.

    If problem is corrected, replace TCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO