Identified Throttle Wire

slidefighter

Junior Member
Messages
52
Admittedly a piece of "micro-information", but I just finished the DBW Module upgrade on my 4200 Coupe and managed to mis-wire one wire. This may be well known information but I hadn't seen it before. The wire at pin number 69 on the factory ECU connector, just to the left of the black wire at pin number 50, is black with a purple stripe (hard to discern in a dark footwell). Anyway, it is the (or one of the) throttle wire(s). Once connected up like that, the car fired right up, all warning lights went out but the throttle did not work. The engine idled nicely throughout any throttle movement.

Rewired to the correct (immediately adjacent black wire at pin 50) and voila---all is well. Hard for me to fathom that that one little wire connects the throttle pedal to the throttle! Not really of course, everything is like that these days...my BMW1000RR throttle is "ride by wire" too, with a simple wire pair leading out of the throttle and no cable whatsoever. Amazing to an old guy like me!

Just figured it might be useful info to the forum.

Regards,


Lee...