Originally posted by asis
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edit: nvm., ollaankin e36 osios, en tiedä päteekö alkuunkaan.
edit2: tämmöne löyty, eli vahvasti ehkä?
https://www.turnermotorsport.com/t-faq-ews
EWS, E36 9/93-12/93 = links the door lock switch to the DME and OBC. If the door was locked with the key (or factory alarm) the car will not start without the doors unlocked with the factory key or entering the code into the OBC. In other words, you can’t smash the window and hot wire the car because the DME has killed the ignition and fuel systems.
EWS-I, E36 1/94-12/94 = same as above but added a starter immobilization relay and transmission position switch.
In either of the above systems the DME is passive. It only receives signals from sensors and modules. So the DME is not as tied into the body electronics as much as EWS-II.
EWS-II, E36 1/95-8/96 = similar to the above but with an electronic key, EWS module (“brain”), and the DME all linked together. The same door lock logic remains. All systems for starting the engine are run through the EWS module (starter relay, starter power, fuel, ignition). The key sends a signal to the EWS module and the module asks for a matching signal from the DME. If the two signals don’t match the EWS module will not start the car. The EWS module also checks for OBC function and transmission park/neutral position.
EWS-III, E36 9/96-8/99 = revised EWS-II system with added clutch position sensor and revised module and wiring.
EWS-I, E36 1/94-12/94 = same as above but added a starter immobilization relay and transmission position switch.
In either of the above systems the DME is passive. It only receives signals from sensors and modules. So the DME is not as tied into the body electronics as much as EWS-II.
EWS-II, E36 1/95-8/96 = similar to the above but with an electronic key, EWS module (“brain”), and the DME all linked together. The same door lock logic remains. All systems for starting the engine are run through the EWS module (starter relay, starter power, fuel, ignition). The key sends a signal to the EWS module and the module asks for a matching signal from the DME. If the two signals don’t match the EWS module will not start the car. The EWS module also checks for OBC function and transmission park/neutral position.
EWS-III, E36 9/96-8/99 = revised EWS-II system with added clutch position sensor and revised module and wiring.
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