Display group 57

Fig 1: Display Group 57 - Speed Control, Idling Stabilization

Courtesy of VOLKSWAGEN OF AMERICA, INC.

NOTE: In the previous graphic, for Evaluation, refer to:

Notes on display zones 1 and 2:

The rpm in display zone 1 (measured revolutions) is the actual engine speed.
The rpm in display zone 2 (specified rpm) is theoretical engine speed calculated by the Motronic Engine Control Module (ECM) -J220-. at idle, the Motronic Engine Control Module (ECM) -J220- always tries to adapt the actual engine speed to the specified engine speed.