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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System (L310) - Diagnostic Codes (4 Of 4) & Symptom Tests >> Electronic Shift Lever System >> DTC U0140-00: Lost Communication with Body Control Module (Sub) Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module from Gear Shift Control Module "A"; DTC U1107-00: Lost Communication with Power Management Module (Gear Shift Control Module "A"); DTC U1170-00: Lost Communication with Brake System Control Module (Gear Shift Control Module "A") [10/2017 - 10/2023] >> Procedure
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DTC U0140-00: Lost Communication with Body Control Module (Sub) Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module from Gear Shift Control Module "A"; DTC U1107-00: Lost Communication with Power Management Module (Gear Shift Control Module "A"); DTC U1170-00: Lost Communication with Brake System Control Module (Gear Shift Control Module "A") [10/2017 - 10/2023]: Procedure

  1. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Health Check.
    4. Check for DTCs.

      Result

      Result Proceed to
      DTC P176D-12 does not output. A
      DTC P176D-12 is output. B
    5. Turn the power switch off.

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2023] 

    Result: 

    GO TO DTC CHART (P176D-12). Refer to  DTC P176D-12: IG2 Signal (Gear Shift Control Module "A") Circuit Short to Auxiliary Battery [10/2017 - 10/2023]