5. Fi INJECTION SYSTEM MOVIE S 125i
5-12
3. ECU Module Replacement
When switch is on and battery is connected,
don’t remove ECU module, connect
additional wire or cut any wire.
1.Make sure to replace the ECU module after
the ignition switch is turned off.
2.To identify if new ECU with certain version,
check with sticker on ECU or with
diagnostic tool.
3.To aim the axle of throttle at knob of TPS
then assemble the ECU module and install
to vehicle.
4.After assembling ECU module, to confirm if
operating throttle smoothly and throttle
back in position precisely when release
acceleration.
5.Proceeding TPS initial and adaptation
setting after replacing the ECU module
would be necessary.
6.Connecting diagnostic tool to the diagnostic
connector, to check if throttle position and
output voltage from TPS are out of the
range.
Item Specification
TPS voltage
Idle (0°)=0.23±0.05V
Throttle fully(90°) >3.27V
7.To run the engine till reaching the working
temperature and check with diagnostic tool
and refer to the related diagnostic report, to
confirm all figures are fitted in standard.
(Especially notice if there is any abnormal
leaking symptom or unstable situation at
idle speed)
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