Ignition Control Module

WARNING: This page is about a different car, the 1998 Jaguar XK8 and 1997 Jaguar XK8. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition Control Module

Courtesy of JAGUAR CARS, INC.

Two ignition control modules control firing of the spark plugs when triggered by the engine control module (ECM); the modules provide an interface between the ECM and the coil on plugs such that:

Ignition control module 1 drives bank 1 - coils 1 and 4, bank 2 - coils 2 and 3.
Ignition control module 2 drives bank 1 - coils 2 and 3, bank 2 - coils 1 and 4.