400SEL (140.043) V8-4.2L (119.971) (1993)
Ignition Control Module: Description and Operation
Dwell Angle Adjustment
The EZL/AKR control module controls the primary ground connection to the ignition coils (T1 and T2). This function is comparable to the operation of
the points in a mechanical ignition system, in that it opens and closes, determining dwell angle and ignition timing.