- Honda Car Owner's Manual

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63
MOTORCONTROLMODULE(MCM)
The IMA Motor/Generator'sfunction is to charge the Battery Module, to assistthe gasoline engine
underacceleration,andtostarttheengineunderspecificconditions.
The Motor Control Module controls all these actions. The MCM is a low-voltage, microprocessor
controlled device (i.e. a computer). The MDM that it communicates with, in turn contains all the high
voltagecicuitrythatconnectsdirectlytothemotoritself.
ThefunctionoftheMCMis:
• To communicatewiththeECM/PCMtodeterminethevehicleoperationmode,andtosend
DTCcodestothemainECMtoreportanyproblemsdetectedintheIMAsystem.
• TocommunicatewiththeBCMthatconstantlycalculatestheBatteryModulestateofcharge
based on battery temperature, current and voltage. This information is used to protect the
BatteryModuleandmaintainproperchargelevels.
• TocommunicatewiththeinstrumentpaneldisplaytokeepthedriverinformedabouttheIMA
systemconditionsandoperatingmodes.
• TocommunicatewiththeMDMtoreceivemotorcommutationinformation,andtocontrolthe
MotorPowerInverterModule(IGBT's)throughtheVoltageConverterModule.
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