Power FC ecu buzzing ?? when ign off ?? relay ? Help need urgently .

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Arrived to work today, car driving away fine etc ...

turned off car went into work , came out bout 2 hours later, hear this crazy buzzing from the ECU ... a relay maybe ?/

buzzing only happens when the ign is off, car starts and runs fine ??


disconnected the battery so not to blow the replay or do any more damage ??

any 1 any ideas ... can hear a slight noise from the coil pack closest the bulkhead too ?? this shouldn't be getting power with the ign off right ??

 

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any 1 ???

when i left the battery off for a few hours and reconnected, noise in ecu stopped ... but drive a few miles and car heats up , and then turn car off, ECU goes mad again .... coilpack gone very dodgy ??

 

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any help guys ?/


is the ign relay below beside the ecu ? could that be getting stuck or something does any know.