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Home >> Lexus >> 2006 >> IS 350 >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2GR-FSE) >> SFI System >> DTC U0101 Lost Communication with TCM >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

TYPICAL MALFUNCTION THRESHOLDS

Communication signal Lost communication with TCM
  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0101) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the tester on.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    5. Read DTCs.

      Result 

      RESULT REFERENCE

      Display (DTC output) Proceed to
      U0101 A
      U0101 and other DTCs B

    B : GO TO  DTC CHART  

    A : REPLACE ECM 

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