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Home >> Toyota >> 2021 >> Prius LE AWD-e >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (8 Of 8) & Circuit Tests >> SFI System >> DTC U1293-87: Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message [11/2015 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (IG).
  7. Turn the Techstream on.
  8. Wait 20 seconds or more.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes.
  10. Read the DTCs.

    HINT: 

    If a DTC is output, the system is malfunctioning.

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