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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (18 Of 18) & Circuit Tests (1 Of 3) >> Hybrid Control System >> DTC U0104-87: Lost Communication with Cruise Control Module Missing Message; DTC U0122-87: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U0125-87: Lost Communication With Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U1110-87: Lost Communication with Clearance Sonar Module Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U1175-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" (Powertrain Bus) Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message; DTC U1184-00: Lost Communication with Advanced Drive System (System 2) Missing Message; DTC U11A2-00: Lost Communication with Advanced Drive Control Module (ch4) (System 2) Missing Message [11/2020 - 12/2023] >> Procedure

DTC U0104-87: Lost Communication with Cruise Control Module Missing Message; DTC U0122-87: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U0125-87: Lost Communication With Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U1110-87: Lost Communication with Clearance Sonar Module Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U1175-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" (Powertrain Bus) Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message; DTC U1184-00: Lost Communication with Advanced Drive System (System 2) Missing Message; DTC U11A2-00: Lost Communication with Advanced Drive Control Module (ch4) (System 2) Missing Message [11/2020 - 12/2023]: Procedure

  1. CHECK DTC OUTPUT 

    Pre-procedure1

    • Check for DTCs of all systems by following the prompts on the GTS screen.
    • Check for DTCs.

      Result

      Result Proceed to
      EV control ECU outputs P2530-12. A
      EV control ECU does not output P2530-12. B

    Post-procedure1

    • Turn the ignition switch off.

    Result: 

    GO TO DTC CHART (P2530-12). Refer to  DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [11/2020 - 12/2023] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 12/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2022 - 12/2023]