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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission (A960E)) >> Automatic Transmission System >> DTC U0100 Lost Communication with ECM/PCM "A" >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different variant/trim than selected.
TYPICAL MALFUNCTION THRESHOLDS CHART

Communication between ECM and TCM No communication
  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0100) 
    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 CHART

    Display (DTC output) Proceed to
    U0100 A
    U0100 and other DTCs B

    B : GO TO DTC CHART 

    A : REPLACE ECM 

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