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Home >> Toyota >> 2016 >> Highlander XLE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Automatic Transmission (UA80E) - Diagnostic Codes (2 Of 3)) >> Automatic Transaxle System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2016 - ] >> Procedure

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2016 - ]: Procedure

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  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U010087) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Transmission / Trouble Codes.

      Powertrain > Transmission > Trouble Codes 

    5. Read the DTCs using the Techstream.

      Result

      Result Proceed to
      Only DTC U010087 is output A
      DTC U010087 and other DTCs are output B

    Result:  2

    B 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2016 - 10/2017]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - ] 

    Result:  1

    A 

    See step  2

  2. REPLACE ECM 
    1. Replace the ECM.

      Refer to COMPONENTS [11/2016 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    PERFORM REGISTRATION. Refer to  REGISTRATION [11/2016 - ] 

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