5. Fi INJECTION SYSTEM MOVIE S 125i
5-11
SYNERJECT M3A ECU MODULE
1.Function and structure：
ECU module is designed to be used with DC
8~16V battery as its power resource, which
combines ECU, TPS, ABV and T-MAP as a
module, equips totally 32 functional pins. A
microchip inside records a program to
communicate and deal with all information.
This module includes an interface loop to
detect and handle the condition of engine, and
has the driven loops for fuel injector, fuel
pump and inductive ignition coil.
2.Disassembly of ECU module：
（Except technician who has been qualified by
KYMCO, disassembling this module will be
forbidden）
1. Do not remove the ECU module before
switching off.
2. Removing luggage box and fixed bolts of
battery⊕○－ terminals (remove ○－ terminal
first, then ⊕ terminal).
3. To push the stopper and release the pulling
rod of ECU module coupler. Rotate the rod
while you hearing a click, remove the
coupler.
4. To release screw, connecting pipe’s bolt, inlet
manifold and ECU module separately.
5. Releasing the fixed nut of the throttle cable
and remove the cable.
6. To remove ECU module.
7. Removing four fixed screws to separate
throttle body from ECU module.
8. Assembly would reverse the steps of
disassembly.
Intake air pressure sensor
TPS ABV
ECU (ECU MODULE)
ECU module coupler
Rod
Stopper
Intake air temperature sensor
ECU module is a precision electronic component, noticing items as following:
1. Don’t put it in water.
2. Don’t remove battery while the ignition switch is on or could burn the circuit of ECU.
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