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Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes) (4 Of 5) >> Hybrid Control System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U011087: Lost Communication with Drive Motor Control Module "A" Missing Message; DTC U012287: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U012687: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U012987: Lost Communication with Brake System Control Module Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U015187: Lost Communication with Restraints Control Module Missing Message; DTC U016487: Lost Communication with HVAC Control Module Missing Message; DTC U029387: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U110787: Lost Communication with Power Management Module Missing Message; DTC U117087: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message [10/2018 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT: 

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. Turn the power switch on (READY) and wait for 2 minutes or more. [*1]

    HINT: 

    [*1] : Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT: 

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.