Most countries have their own regulations, so each ECU
has different characteristic. So, do not confuse ECU with
each other and use only the ECU for your model. Other-
wise, the motorcycle cannot clear the regulation.
Part Number [A]
Never drop the ECU, especially on a hard surface.
Such a shock to the ECU can damage it.
Seat (see Seat Removal in the Frame chapter)
Battery Case Cover (see Battery Removal in the Electri-
cal System chapter)
Turn Signal Control Relay [A]
Remove the ECU [B] with bracket [C].
Disconnect the ECU connectors [A].
Remove the ECU [B] from the rubber protector [C].
ECU (in Rubber Protector)
Fit the hooks [A] of the bracket [B] into the recesses [C]
of the battery case.
Install the removed parts.
When the ECU was replaced with a new one, do not
remove the battery, fuse or ECU for 6 seconds for the
learning control of the ECU after the ignition switch is
The ECU does the learning control that is to memorize
the full closing position and full opening position of the
throttle valve for 6 seconds after the ignition switch is
GB WVTA (FULL)
FUEL SYSTEM (DFI) 3-85