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5. FUEL INJECTION SYSTEM MXU 500EXi/MXU500i
ELECTRIC CONTROL UNIT
(ECU)
REMOVAL/INSTALLATION
Do not disconnect or connect the ECU
connector during the ignition switch
"ON"; it may cause the ECU damaged.
The throttle position sensor (TPS) and
idle air bypass valve (ISC) have to be
reset when throttle body, MAP, TPS,
ISC or ECU has been reinstalled.
ECU Connector
Disconnect the ECU connector and remove
the ECU from the frame.
Installation is in the reverse order of the
removal.
ECU connector remove procedure
(Same as DOWNTOWN 125i)
ECU connector install procedure
5-20