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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 179 (Engine Control System (2GR-FSE) - DTC P050B - P2A03, DTC U0101) >> DTC U0101 Lost Communication with TCM >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0101) 
    1. Connect Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the tester on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble 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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