Wiring connector

Wiring connector

The numbers in squares indicate the corresponding control unit pins.

Checking resistance

The sensor’s resistance can be measured by connecting an ohmmeter between pins A and C of the sensor.

Resistance: 0 - 1200 ohm ± 20% at 23 °C

Recovery

A value is assumed which is calculated in accordance with the pressure present in the inlet manifold; if the pressure sensor is also faulty, a throttle aperture angle of about 50° is established as a fixed value.

The strategies of gradual reduction of rpm at idling speed (dashpot) are inhibited.

Self-adaptivity of idle speed is inhibited.

Self-adaptivity of the mixture strength is inhibited.

Removing-refitting

Undo the two bolts and remove the sensor.

NOTE The sensor is secured to the throttle body by means of two lugs in which there are two non-slotted holes; it is therefore not necessary to make any adjustment to its angle position as the control unit itself, by means of appropriate self-adaptive algorithms, recognizes the fully closed or fully open position of the throttle.

NOTE Whenever the potentiometer bolts are slackened or removed, they must be replaced as the thread is coated with a thin layer of Loctite which ensures only once that they lock.