3.0L Carbureted Ignition ECM
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Figure 21 Mercury 3.0L Ignition ECM
e TechMate Pro scan tool is equipped with the ability to diagnose Mercury’s
3.0L outboard ignition system. is system incorporates a Denso electronic
ignition control module and was used on 1994 and later 3.0L (185c.i. / 225 HP)
carbureted outboard motors.
Connecting to the 3.0L Carbureted Ignition System
Connection of the scan tool to the Mercury outboard ignition system requires
the use of a special adapter. One of two possible adapters is required for this
system as shown below.
e 1994 model year 3.0L ignition modules were not equipped with a diagnos-
tic connector and require the use of a T-Adapter harness #94012. e 1995 and
later 3.0L ignition modules were equipped with a 4 pin diagnostic connector and
require scan tool adapter #94011.
4-pin Adapter
Rinda Tech P/N 94011
T-Adapter
Rinda Tech P/N 94012
Be sure the Engine’s Ignition Switch is in the OFF position before connecting the
scan tool to the ignition system.
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