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Home >> Toyota >> 2014 >> Prius Three >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes & Circuit Tests) (Except Plug-In) >> Hybrid Control System >> DTC U0100-211: Lost Communication with ECM / PCM "A"; DTC U0100-212: Lost Communication with ECM / PCM "A"; DTC U0100-530: Lost Communication with ECM / PCM "A"; DTC U0129-220: Lost Communication with Brake System Control Module; DTC U0129-222: Lost Communication with Brake System Control Module; DTC U0129-527: Lost Communication with Brake System Control Module; DTC U0129-528: Lost Communication with Brake System Control Module; DTC U0140-146: Communication Error from Body ECU to HV ECU; DTC U0151-763: Communication Error from Airbag ECU to HV ECU; DTC U0164-594: Communication Error from A/C ECU to HV ECU; DTC U0164-827: Communication Error from A/C ECU to HV ECU; DTC U1107-436: Lost Communication with Power Management Module [10/2013 - ] >> Procedure
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DTC U0100-211: Lost Communication with ECM / PCM "A"; DTC U0100-212: Lost Communication with ECM / PCM "A"; DTC U0100-530: Lost Communication with ECM / PCM "A"; DTC U0129-220: Lost Communication with Brake System Control Module; DTC U0129-222: Lost Communication with Brake System Control Module; DTC U0129-527: Lost Communication with Brake System Control Module; DTC U0129-528: Lost Communication with Brake System Control Module; DTC U0140-146: Communication Error from Body ECU to HV ECU; DTC U0151-763: Communication Error from Airbag ECU to HV ECU; DTC U0164-594: Communication Error from A/C ECU to HV ECU; DTC U0164-827: Communication Error from A/C ECU to HV ECU; DTC U1107-436: Lost Communication with Power Management Module [10/2013 - ]: Procedure

  1. CHECK DTC OUTPUT (ALL) 
    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 if DTCs are output.

      Result

      Result Proceed to
      Power management control ECU outputs P2532-772 A
      Power management control ECU does not output P2532-772 B
    5. Turn the power switch off.

    B → See step   2 

    A → See step   3 

  2. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2013 - ] 
  3. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2013 - ]