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Home >> Volvo >> 2000 >> S70 GLT SE >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Control - Theory & Operation - C70, S70 & V70 Turbo & S80 >> Self-Diagnostic Systems >> Throttle Diagnostic >> Substitute Values

Substitute Values

  1. Fuel Shut-Off System Which Follows Accelerator Pedal (AP) Position

    Engine speed (RPM) is maximized by disabling the injectors, engine speed (RPM) is governed by the Accelerator Pedal position. Maximum engine speed (RPM) is approximately 5000 RPM.

  2. Slower Throttle Opening Than Requested Throttle Opening

    The throttle opens more slowly than normal requested opening because the system is only regulated by the pulse modulated signal from the Accelerator Pedal position sensor which is low-pass filtered.

  3. Throttle Closure When Braking

    The Accelerator Pedal position is ignored when the brake pedal is depressed. The throttle unit maximizes permitted throttle opening.

  4. Throttle follows Accelerator Pedal (AP) Position

    The throttle and Accelerator Pedal are utilized as if they were mechanically connected to each other.

  5. Throttle Disabled

    Throttle is not affected and is in its mechanical stop position.
  6. Cruise control switched off
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