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Home >> Lexus >> 2020 >> 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 - ] >> Procedure
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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 - ]: Procedure

  1. CHECK DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Check for DTCs of all systems by following the prompts on the Techstream screen.
    4. Check for DTCs.

      Result

      Result Proceed to
      Hybrid vehicle control ECU outputs P253012. A
      Hybrid vehicle control ECU does not output P253012. B
    5. Turn the power switch off.

    Result: 

    GO TO DTC CHART (P253012). Refer to  DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [10/2018 - ]  

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ]