The AWD module does not interface with the EEC, It is a standalone module, with its own sensors and everything. it even runs independantly from the powertrain Module, which is really just a bank of relay drivers, that takes descretes from other controls, like the EEC for the transmission...
Here in the States the EECIV was produced from 1983 to 1995. From the start, the system was batch fire in MPI configuration, until mid 93' then the system was converted to Sequential, they added a cam sensor, and one O2 sensor( for two total), and they used the delay between exhaust pulses to...