2-6/EN
2.1 Connection overview of speech input system wiring harness
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Item Description Signal Cable colour
Cross-section
Connection location in the car
I*
Speech input system wiring
harness
– –
I/1
12-pin plug casing – – E39/2: 12-pin white plug connector X400 in the load
compartment on the left
E39: 12-pin white plug connector X400 in the boot
on the left
E38: 12-pin white plug connector X400 on the rear
bulkhead by the left tail light
I/2
12-pin socket casing – – E39/2: 12-pin white plug connector X400 in the load
compartment on the left
E39: 12-pin white plug connector X400 in the boot
on the left
E38: 12-pin white plug connector X400 on the rear
bulkhead by the left tail light
I/3
3-pin socket casing – – E39/2: 3-pin white plug connector X2759 on the
wheel arch in the boot on the left
(microphone wiring harness)
E39: 3-pin white plug connector X2759 in the boot
on the left (microphone wiring harness)
E38: 3-pin white plug connector X2759 in the boot
on the left (microphone wiring harness)
I/5
26-pin socket casing – – E39/2: Speech input module U422 on the boot floor
in front of the spare wheel trough
E39: Speech input module U422 in the boot on the left
E38: Speech input module U422 in the boot on the left
I/4
3-pin plug casing – – E39/2: 3-pin white plug connector X2759 on the
wheel arch in the boot on the left
(telephone/mobile phone connection cable)
E39: 3-pin white plug connector X2759 in the boot on
the left (telephone/mobile phone connection cable)
E38: 3-pin white plug connector X2759 in the boot on
the left (telephone/mobile phone connection cable)
* The illustration shows the wiring harness for the E39/2 speech input system.
On models E38 and E39 the disconnection of branches I/3 and I/4 from the wiring harness is in immediate vicinity
of branch I/5.This is due to the system and does not constitute an error.
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