BMW 1992 525i Electrical Troubleshooting Manual page 266

IBSI
POWER SEATS
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Pin Assignments
A=X603
12 Pins, black
B=X604
12 Pins, black
C=X881
6 Pins, white
D=X887
6 Pins, black
X603 (Driver) and X604 (Passenger)
Pin Type Description/Function
1
EIA
Seat cushion tnt control
2
EIA
Seat cushion
tnt
control
3 EIA
Seat cushion movement control
4
EIA
Seat cushion movement control
5
E
Battery voltage
6 M Ground
7 EIA
Seat cushion height control
8 EIA
Seat cushion height control
9
EIA
Headrest control
10
EIA
Recliner control
11
EIA
Headrest control
12
E!A
Recliner control
Connection
Seat cushion tilt motor
Seat cushion tilt motor
Seat movement motor
Seat movement motor
Fuse
Ground
Seat height motor
Seat height motor
Headrest motor
Seat back recliner motor
Headrest motor
Seat back recliner motor
Type of Signal Tester Display
(
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Measurement Notes
(JI
1\)
0
0
.
0
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