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Road Test

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Most performance based automatic transmission diagnostic trouble codes (DTCs) require the fault to be detected multiple times before setting a DTC. In many instances the fault must be detected consecutively a predetermined number of times (up to five). Carrying out the shift point road test as detailed below increases the likelihood that a DTC will set if a fault is present in the system.

  1. Bring the engine and transmission up to normal operating temperature.
  2. Operate the vehicle with the selector lever in the D position.
  3. From a stop, accelerate the vehicle to 100 km/h (62 mph) with the shifts occurring at approximately 2000 rpm. Stay in 10th gear for 30 seconds or until the TCC applies. Repeat this two times.
  4. From a stop, accelerate the vehicle to 100 km/h (62 mph) with the shifts occurring at approximately 3000 rpm. Stay in 10th gear for 30 seconds or until the TCC applies. Repeat this two times.
  5. If the transmission fails to upshift/downshift, REFER to: Diagnosis By Symptom .
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