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Home >> Toyota >> 2013 >> Prius Three >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 82 (Cruise Control System (Diagnostics - Introduction) (Plug-In)) >> Cruise Control System >> Road Test >> Road Test
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Road Test

WARNING: This page is about a different variant/trim than selected.
  1. PROBLEM SYMPTOM CONFIRMATION 
    1. Inspect the SET function.
      Fig 1: Inspecting SET Function
      GTY101678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      2. Check that the cruise control indicator light illuminates on the combination meter sub-assembly.
      3. Drive at a speed between approximately 40 km/h (25 mph) and 200 km/h (125 mph).
      4. Push the cruise control switch to -/SET.
      5. Check that the cruise control SET indicator light illuminates at this time.
        Fig 2: Identifying SET Indicator
        GTY212153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Cruise Control Indicator Light
        *2 Cruise Control SET Indicator
      6. After releasing the switch, check that the vehicle maintains the set speed.
    2. Inspect the + (ACCEL) function.
      Fig 3: Inspecting RES (RESUME) Function
      GTY108029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      2. Drive at a speed between approximately 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control switch to -/SET.
      4. Check that vehicle speed increases while the cruise control switch is pushed to +/RES, and that the vehicle maintains the newly set speed when the switch is released.
      5. Push the cruise control switch to +/RES and then release it immediately. Check that vehicle speed increases by approximately 1.6 km/h (1.0 mph) (tap-up control).
    3. Inspect the - (COAST) function.
      Fig 4: Inspecting SET Function
      GTY101678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      2. Drive at a speed between approximately 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control switch to -/SET.
      4. Check that vehicle speed decreases while the cruise control switch is pushed to -/SET, and the vehicle maintains the newly set speed when the switch is released.
      5. Push the cruise control switch to -/SET, and then release it immediately. Check that vehicle speed decreases by approximately 1.6 km/h (1.0 mph) (tap-down control).
    4. Inspect the CANCEL function.
      Fig 5: Inspecting CANCEL Function
      GTY101677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      2. Drive at a speed between approximately 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control switch to -/SET.
      4. When any of the following are performed, check that cruise control system control of vehicle speed is canceled and that the normal driving mode (no control of vehicle speed by the cruise control system) resumes.
        • Depressing the brake pedal.
        • Moving the shift lever from D to any other position.
        • Pulling the cruise control switch to CANCEL.
        • Turning the cruise control system off using the cruise control switch (ON-OFF button).
    5. Inspect the RES (RESUME) function.
      Fig 6: Inspecting RES (RESUME) Function
      GTY108029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      2. Drive at a speed between approximately 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control switch to -/SET.
      4. Cancel cruise control system control of vehicle speed by performing any of the above operations (other than turning the cruise control system off using the cruise control switch (ON-OFF button)).
      5. After pushing the cruise control switch to +/RES at a speed of more than approximately 40 km/h (25 mph), check that the vehicle resumes the speed set prior to cancellation.