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Home >> Toyota >> 2017 >> Prius C Two >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (4 Of 6) >> Hybrid Control System >> DTC U0100-530: Lost Communication with ECM / PCM "A"; 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 U0164-827: Communication Error from A/C ECU to HV ECU; DTC U1107-436: Lost Communication with Power Management Module [11/2015 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

GTY712801Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to 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 ignition switch off and wait for 30 seconds or more.
  5. Turn the ignition switch to ON (IG) and turn the Techstream on.
  6. Turn the ignition switch to ON (READY) and wait for 2 minutes or more. [A]
  7. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [B]
  8. Read the current DTCs.

    HINT: 

    • If a current DTC is output, the system is malfunctioning.
    • If a current DTC is not output, perform the following procedure.
  9. Check that permanent DTCs are cleared. If no permanent DTC is output, the system is normal.
  10. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.
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