Question 1

The accelerator pedal position sensor uses ________ sensor(s), which act together to give accurate accelerator pedal position information to the controller.&#10;A)More than three&#10;B)One&#10;C)A vacuum&#10;D)Two or three

Accepted Answer

The accelerator pedal position sensor typically uses two or three sensors that work together to provide accurate and reliable information about the pedal's position to the vehicle's control systems. This redundancy ensures accurate readings and helps to prevent errors.

Question 2

With the ignition off and the key out of the ignition, what should happen if a technician uses a screwdriver to gently push on the throttle plate in an attempt to open the valve?&#10;A)The throttle should move, and then spring back to the home position when released.&#10;B)The throttle should move closed, but not open further than the default position.&#10;C)Nothing. The throttle should be kept from moving by the motor, which is not energized with the key off.&#10;D)The throttle should move and stay where it is moved and not go back unless moved back.

Accepted Answer

The throttle plate is typically spring-loaded to return to its default position when not powered, so it should move when pushed and then spring back to the home position when released.

Question 3

The accelerator position sensor outputs 2 identical, redundant voltage signals.

Accepted Answer

The accelerator position sensor typically outputs two different, but related, voltage signals as a redundancy measure for safety. These signals are often inversely related to ensure accuracy and reliability in detecting the pedal's position.

Deck 80: Electronic Throttle Control System