Is300h ecu connectors

[John.a]

Hi,

 

Im fairly new to these lexus vehicles

 

Just need some info

 

The ecu at the front passenger side near main fuse box which is the engine control unit has two connecting ports one large and one smaller, i want to know what as these two connectors for?

 

Im assuming the larger connector is from.the main engine loom, so what is the smaller one?

 

Please help 

 

😅

 

Also can we get hold of these connectors themselves? 

 

The picture is an example

[Shada]

The other is the loom from the car. Powers grounds accelerator pedals canbus  and other inputs.

I think the fact you have to ask what it does you should leave the plugs alone.