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Home >> Toyota >> 2010 >> Prius PHV >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes (P31EC-416 - U129A-123)) & Circuit Tests) (PHV) >> Hybrid Control System >> DTC U0100-211, U0100-212, U0100-530, U0129-220, U0129-222, U0129-527, U0129-528, U0140-146, U0151-763, U0164-594, U0164-827, U1107-436: Lost Communication with ECM/PCM "A"; Lost Communication with ECM/PCM "A"; Lost Communication with ECM/PCM "A"; Lost Communication with Brake System Control Module; Lost Communication with Brake System Control Module; Lost Communication with Brake System Control Module; Lost Communication with Brake System Control Module; Lost Communication with Body Control Module; Lost Communication with Airbag ECU; Lost Communication with A/C ECU; Lost Communication with A/C ECU; Lost Communication with Power Management Module >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Identifying Power Switch On Duration
GTY211050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the power switch 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 power switch off.
  5. Turn the power switch on (READY) and after a few seconds, turn the power switch off. [A]
  6. Repeat [A] 3 times. [B]
  7. Turn the power switch on (IG) and turn the Techstream on.
  8. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [C]
  9. Check that permanent DTCs are cleared.
  10. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.

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