SYSTEM CONNECTORS
The V-MAC IV system utilizes many different
connector styles and sizes. The Engine
Management System (EMS) Module, Instrument
Cluster Module (ICM), and the Vehicle Electronic
Control Unit (VECU) are some of the largest
connectors in the system. These connectors and
control units are where the majority of the V-MAC
IV system testing is performed. This section
illustrates the EMS Module, ICM, and Vehicle
Electronic Control Unit (VECU) connectors and
includes charts with connector terminal
identification and functions. The charts should not
be used as a replacement for the detailed tests
that appear in this manual. The charts are
intended as an identification reference for use
when repairing a connector or terminal.
Engine Management System (EMS) Module
The Engine Management System (EMS) Module
has two 62 pin connectors. To disconnect a
connector from the EMS Module, pull back on the
connector lock and gently pull the connector back
on its heel and away from the EMS Module. For
easy reference, the following illustration shows
each pin number as it appears on the connector.
Be sure that the connector is aligned as shown
below to avoid confusion when checking pin
numbers. The connector numbers and EMS
Module orientation are shown as a reference for
reconnecting the EMS Module to the engine
harness.
ENGINE MANAGEMENT SYSTEM (EMS) MODULE
