Hi
The BECM needs to be loaded with the parameters of the car like the VIN and the code for the keyfobs (all settings for the model like sun roof fitted, LHD or RHD, 2.5D or 4.0 or 4.6, etc etc.)
The after this the BECM must be synchronised with the engine ECU with the help of a diagnostic computer. Only after this will the BECM allow the engine to be turned over and started.
There are a few good posts in the past on how the BECm works and problems there can be.
Good luck
Jos
The BECM needs to be loaded with the parameters of the car like the VIN and the code for the keyfobs (all settings for the model like sun roof fitted, LHD or RHD, 2.5D or 4.0 or 4.6, etc etc.)
The after this the BECM must be synchronised with the engine ECU with the help of a diagnostic computer. Only after this will the BECM allow the engine to be turned over and started.
There are a few good posts in the past on how the BECm works and problems there can be.
Good luck
Jos