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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (1 Of 7) >> Hybrid Control System >> DTC P0A94-550: DC / DC Converter Performance; DTC P0A94-564: DC / DC Converter Performance [02/2014 - 11/2016] >> Confirmation Driving Pattern

Confirmation Driving Pattern

Fig 1: Confirmation Driving Pattern
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  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 and wait for 30 seconds or more.
  5. Turn the power switch on (IG) and check that there are no abnormalities (abnormal sounds, coolant leaks, etc.).
  6. Turn the power switch on (READY) and turn the Techstream on.
  7. With the shift lever in P, wait for 5 seconds. [A]
  8. With the engine stopped and shift lever in P, depress the accelerator pedal to start the engine. [B]
  9. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [C]
  10. Read the current DTCs.

    HINT: 

    • If a current DTC is output, the system is malfunctioning.
    • If current DTCs are not output, perform the following steps to check for permanent DTCs.
  11. Check that the permanent DTCs are cleared.
  12. If the permanent DTCs are not cleared, perform a universal trip, and then check for permanent DTCs again.