[R129 SL] FW: schematic request

[Jan Kuylaars]

-----Oorspronkelijk bericht-----
Van: Jan Kuylaars [mailto:J.kuylaars at kpnplanet.nl]
Verzonden: dinsdag 10 april 2007 21:06
Aan: SL Mailing List
Onderwerp: RE: [R129 SL] schematic request


Electric chairs from mercedes !

seat control; first check your fuses. every seat has two fuses, the back
control from left is together with
the seat from right and vice versa.
Then check the wires on the control box under the seats.
control box; mentioned 5 connectors above 4 relai's

connector above 1 relai = motor bottom seat up/down backside
2nd connector= motor bottom seat up/down frontside
3th connector= motor bottom seat forward and backwards
4th connector= motor backrest forward and backwards
5th connector= motor headrest up and down.

The connectors on the other side:
Just between connector 5 with 2 relai's between is the power connector.
There should be 2 times 12 volt on the connector from 2 fuses in the
motorcompartment
Look well at the fuses because it me seem that they are good, but by age
they are broken.
For 3 $ you replace all the fuse by new, it is better to do after some
years.
On the left side is the connector from the door panel control, it give power
to the system if the door is open.
Then you have open part and at the right against the 3 relai's there is the
connector  what go's to
the backrest for saftey.
When the bottom from the chair is going backwards and the backrest is almost
coming to the side of the car, the motor is turning the backrest forward.

You can take out the control box, remove carefully the relai covers and use
very tiny sandpaper to clean the contacts.

If you want to check the wiring and motors you can put the control box back
and connect. Don't put the relaicovers back.
if you take the 4 relai's to you, the left one controls the headrest
up/down. 1/2 and 1/10
you can give the cupper contact a light push and the motor will react.
downwards push 1/2 and 2/9

Then from left to right:
first row; 1/2 3/4 5/6 7/8
second row; 9/10 1/10 4/6/8
third row; 2/9 3/5/7

1=headrest up
2=headrest down
3=backrest backwards
4=backrest forwards
5=chair front
6=chair back
7=chair seat front up
8=chair seat front down
9=chair seat back up
10=chair seat back down

TEST PROCEDURE

All values measured to ground unless otherwise noted
Conn./Plug/Pin Pin Information Test Value Comments
N32/1
1.1 Coded voltage input, activates functions selected by S91 s5/s8/s9
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.2 Coded voltage input, activates functions selected by S91 s3/s4/s7
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.3 Coded voltage input, activates functions selected by S91 s1/s2/s6
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.4 Left front power seat switch group power supply output Ignition on 5 VDC
2.1 Main ground to W18 Approx. 0 Ohms to ground
2.2 Circuit 30, main power input Key in steering lock pos 1 12 VDC or no key
inserted, open door 12 VDC Feed from F1fE
2.3 Circuit 15R/30 fused power inputswitched from CF relay module 12 VDC
with key in steering lock pos. 1 Feed from F1f4
2.4 Circuit 30, main power input same as pin 2.2 Feed from F1fF
4.1 Left seat proximity signal output low side
4.2 Left seat proximity signal input Connector 4 unplugged Measure across
pin 4.1 & 4.2 12VDC
4.3 Left backrest lock signal output Measure to pin 2.1 > 4 VDC
4.4 Left seat proximity signal output high side Pin disconnectedMeasure to
pin 2.1 > 4 VDC
4.5 Serial port data output, recalls mirror adjustment presettings from
memory Remove connector 1 from ECMkey in steering lock pos. 1 press one of
memory pos. buttons 4-7 VDC Note 1
5.15.2 Rear raise/lower adjust motor power supply output Ignition on 12 VDC
with s2 pushed in either direction (polarity reverses) Resistance0.5-15 Ohms
5.3 Rear raise/lower pos. actual value reference input Measure to pin 5.4
record value X thento pin 5.5 record value YAdd values X+Y = approx.
2200Ohms
 5.45.5 Rear raise/lower pos. potentiometerpower supply output low sidepower
supply output high side Measure across pin 5.4 & 5.5approx. 2200Ohms
6.16.2 Front raise/lower adjust motor power supply output Ignition on 12 VDC
with s3 pushed in either direction (polarity reverses) Resistance0.5-15 Ohms
6.3 Front raise/lower pos. actual value reference input Measure to pin 6.4
record value X thento pin 6.5 record value YAdd values X+Y = approx.
2200Ohms
 6.46.5 Front raise/lower pos. potentiometerpower supply output low
sidepower supply output high side Measure across pin 6.4 & 6.5approx.
2200Ohms
7.17.2 Seat fore/aft adjust motor power supply output Ignition on 12 VDC
with s1 pushed in either direction (polarity reverses) Resistance0.5-15 Ohms
7.3 Seat pos. fore/aft actual value reference input Measure to pin 7.4
record value X thento pin 7.5 record value YAdd values X+Y = approx.
2200Ohms
 7.47.5 Seat pos. fore/aft potentiometerpower supply output low sidepower
supply output high side Measure across pin 7.4 & 7.5approx. 2200Ohms
8.18.2 Backrest fore/aft adjust motor power supply output Ignition on 12 VDC
with s5 pushed in either direction (polarity reverses) Resistance0.5-15 Ohms
8.3 Backrest pos. fore/aft actual value reference input Measure to pin 8.4
record value X thento pin 8.5 record value YAdd values X+Y = approx.
2200Ohms
 8.48.5 Backrest pos. fore/aft potentiometerpower supply output low
sidepower supply output high side Measure across pin 8.4 & 8.5approx.
2200Ohms
9.19.4 HR raise/lower adjust motor power supply output Ignition on 12 VDC
with s4 pushed in either direction (polarity reverses) Resistance0.5-15 Ohms
9.3 HR raise/lower pos. actual value reference input Measure to pin 9.2
record value X thento pin 9.5 record value YAdd values X+Y = approx.
2200Ohms
 9.29.5 HR raise/lower pos. potentiometerpower supply output low sidepower
supply output high side Measure across pin 9.2 & 9.5approx. 2200Ohms
N32/2

1.1 Coded voltage input, activates functions selected by S92 s5/s8/s9
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.2 Coded voltage input, activates functions selected by S92 s3/s4/s7
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.3 Coded voltage input, activates functions selected by S92 s1/s2/s6
Measure to pin 1.4 approx. 2200 Ohms Note 1
1.4 Right front power seat switch group power supply output Ignition on 5
VDC
2.1 Main ground to W19 Approx. 0 Ohms to ground
2.2 Circuit 30, main power input Key in steering lock pos 1 12 VDC or no key
inserted, open door 12 VDC Feed from F1fE
2.3 Circuit 15R/30 fused power inputswitched from CF relay module 12 VDC
with key in steering lock pos. 1 Feed from F1f4
2.4 Circuit 30, main power input same as pin 2.2 Feed from F1fF
4.1 Right seat proximity signal output low side
4.2 Right seat proximity signal input Connector 4 unplugged Measure across
pin 4.1 & 4.2 12VDC
4.3 Right backrest lock signal output Measure to pin 2.1 > 4 VDC
4.4 Right seat proximity signal output high side Pin disconnectedMeasure to
pin 2.1 > 4 VDC
4.5 Serial port data output, recalls mirror adjustment presettings from
memory Remove connector 1 from ECMkey in steering

lock pos. 1 press one of memory pos. buttons 4-7 VDC Note 1
conn. 5-9 refer to appropriate information from N32/1as listed above
Note 1 For further test refer to DM Body and Accessories Vol. 4 15.1



Designation Description Coordinates Reference

A1  Instrument cluster 38L PE54.30
F1  Fuse and relay box 2L
40G
45L B.4
F1f4 Fuse 4 43G
F1f6 Fuse 6 41G
F1f8 Fuse 8 40G
F1f9 Fuse 9 42F
F1f12 Fuse 12 42F
F1fE Fuse E 1K
45K
F1fF Fuse F 2K
46K
K24  CF relay module 41L
M27  Left front ESA motor group (with memory) 7L
M27m1 Fore/aft motor 8L
M27m2 Rear raise/lower motor 13L
M27m3 Front raise/lower motor 11L
M27m4 Head restraint raise/lower motor 4L
M27m5 Backrest fore/aft motor 6L
M28 Right front ESA motor group (with memory) 61L
M28m1 Fore/aft motor 62L
M28m2 Rear raise/lower motor 58L
M28m3 Front raise/lower motor 60L
M28m4 Head restraint raise/lower motor 67L
M28m5 Backrest fore/aft motor 65L
N32/1  Left front ESA control module (with memory) 4A
12A
20A
28A
36A
N32/2 Right front ESA control module (with memory) 46A
53A
61A
67A
N32/5 Left seat proximity control module 24L
N32/6 Right seat proximity control module 47L
N32/7 Left backrest lock safety package 28L
N32/8 Right backrest lock safety package 36L
49L
N32/9 MSC control module (with memory) 44L
S17/3  Left front door switch 25L
S17/4 Right front door switch 50L
S52/1 Left backrest lock switch (left seat) 32L
S52/1x1 Left backrest lock switch connector (left seat) 31J
S52/2 Right backrest lock switch (left seat) 30L
S52/2x1 Right backrest lock switch connector (left seat) 30J
S52/3 Left backrest lock switch (right seat) 33L
S52/3x1 Left backrest lock switch connector (right seat) 33J
S52/4 Right backrest lock switch (right seat) 34L
S52/4x1 Right backrest lock indicator switch connector (right seat) 34J
S91 Left front ESA switch group (with memory) 17L
S91e1 Illumination 20L
S91s1 Fore/aft switch 15L
S91s2 Rear raise/lower switch 15L
S91s3 Front raise/lower switch 17L
S91s4 Head restraint raise/lower switch 17L
S91s5 Backrest fore/aft switch 19L
S91s6 Memory button 1 switch 14L
S91s7 Memory button 2 switch 16L
S91s8 Memory button 3 switch 18L
S91s9 Memory store button switch 18L
S92 Right front ESA switch group (with memory) 54L
S92e1 Illumination 52L
S92s1 Fore/aft switch 56L
S92s2 Rear raise/lower switch 57L
S92s3 Front raise/lower switch 55L
S92s4 Head restraint raise/lower switch 55L
S92s5 Backrest fore/aft switch 53L
S92s6 Memory button 1 switch 57L
S92s7 Memory button 2 switch 56L
S92s8 Memory button 3 switch 54L
S92s9 Memory store button switch 53L
W1  Main ground (behind instrument cluster) 41H
W18 Ground (left front seat crossmember) 2E
21H
27E
W19 Ground (right front seat crossmember) 46E
49G
50G
X4  Terminal block (circuit 30, fuse and relay box) (2-pole) 39J B.1/4
X6 Terminal block (circuit 58d) (2-pole) 23E
51C B.1/4
X11/4 Diagnostic test clutch 41F B.1/5
B.1/15
X18 Interior/taillamp harness connector (12-pole) 38F B.1/4
X18/3 Interior/taillamp harness connector (8-pole) 42F B.1/4
X54/6 ESC connector (2-pole) 43H B.1/4
X55/3 Left front seat connector block 30G B.1/2
X55/4 Right front seat connector block 33G B.1/2
Z21/10  Door contact connector sleeve (switched ground) (solder joint in
harness) 51E
Z81/4 Circuit 58d connector sleeve (FFS) 22E
52E
*U27 15.00
Electrical system, engine 0
*U34 82.20-2000
Interior lighting 0
*U94 91.59
Roll-over bar 0































-----Oorspronkelijk bericht-----
Van: r129list-bounces at mbcoupes.com
[mailto:r129list-bounces at mbcoupes.com]Namens mooncusser
Verzonden: dinsdag 10 april 2007 18:57
Aan: r129list at mbcoupes.com
Onderwerp: [R129 SL] schematic request


Hi all,
	I need wiring schematic of electric seat system for my 300sl.
It seems possessed... switches don't work and it moved all most all
the way forward on day while driving. And it has not moved since. The motor
is working... or it wouldn't have acted like "Christine" that day I was
driving. Any suggestions????
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