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Home › Lexus › 2007 › IS 350 › Repair and Diagnosis › Accessories & Equipment › Cruise Control Systems › Cruise Control › Cruise Control System › Road Test

Road Test

  1. PROBLEM SYMPTOM CONFIRMATION 
    1. Inspect the SET function.
      1. Turn the cruise control main switch on.
      2. Drive at the required speed (40 km/h (25 mph) or higher).
      3. Push the cruise control main switch to - (COAST)/SET.
      4. After releasing the switch, check that the vehicle cruises at the set speed.
      Fig 1: Inspecting Cruise Control Switch Function
      G04049190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the ACCELERATION function.
      1. Turn the cruise control main switch on.
      2. Drive at the required speed (40 km/h (25 mph) or higher).
      3. Push the cruise control main switch to - (COAST)/SET.
      4. Check that vehicle speed increases while the cruise control main switch is pushed to + (ACCEL)/RES (RESUME), and that the vehicle cruises at the newly set speed when the switch is released.
      5. Push the cruise control main switch to + (ACCEL)/RES (RESUME) and then release it immediately. Check that vehicle speed increases by approximately 1.6 km/h (1.0 mph) (tap-up control).
      Fig 2: Inspecting Cruise Control Switch Function
      G04049191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Inspect the - (COAST) function.
      1. Turn the cruise control main switch on.
      2. Drive at the required speed between 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control main switch to - (COAST)/SET.
      4. Check that vehicle speed decreases while the cruise control main switch is pushed to - (COAST)/SET, and the vehicle cruises at the newly set speed when the switch is released.
      5. Push the cruise control main switch to - (COAST)/SET, and then release it immediately. Check that vehicle speed decreases by approximately 1.6 km/h (1.0 mph) (tap-down control).
      Fig 3: Inspecting Cruise Control Switch Function
      G04049192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Inspect the CANCEL function.
      1. Turn the cruise control main switch on.
      2. Drive at the required speed between 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control main switch to - (COAST)/SET.
      4. When performing any one of the following, check that the cruise control system is canceled and that the normal driving mode is reset.
        • Depressing the brake pedal
        • Depressing the clutch pedal
        • The shift lever is moved from the D to the N position or the transmission is shifted to the 3rd, 2nd, or 1st gear with the shift lever in the S position
        • Turning the cruise control main switch off
        • Pulling the cruise control main switch to CANCEL
        Fig 4: Inspecting Cancel Function
        G04049193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Inspect the RES (RESUME) function.
      1. Turn the cruise control main switch on.
      2. Drive at the required speed between 40 km/h (25 mph) and 200 km/h (125 mph).
      3. Push the cruise control main switch to - (COAST)/SET.
      4. Cancel the cruise control system by performing any of the above operations (other than turning the main switch off).
      5. After pushing the cruise control main switch to + (ACCEL)/RES (RESUME) at a driving speed of more than 40 km/h (25 mph), check that the vehicle resumes the speed set prior to the cancellation.
      Fig 5: Inspecting Cruise Control Switch Function
      G04049194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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