Porsche 928 GT - 1991 WIRE DIAGRAM Quick start guide

Wiring
97
0
0
Wiring Diagram Type 928 S4/GT
Model 91
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
Sheet 6
Sheet 7
Sheet 8
Sheet 9
Sheet 10
Sheet 11
Sheet 12
Sheet 13
Sheet 14
Coordinates
l- IO
l- IO
ii- 20
21- 30
31- 40
41- 50
51- 60
61 - 70
71- 80
81- 90
91 - 100
101 - 110
Lights ROW
Lights USA
Body
Instrument Cluster and Senders
Engine Cooling, Heater, Air Conditioner
Outside Mirror, Power Seat
Seat and Mirror Memory
Radio, Telephone
Antilock System, Tire Pressure Control,
Airbag, Porsche Lock Differential, Trailor
Coupling, Brake Pad Wear Indicator
Motor, Fuel and Ignition, Cruise Control
Alarm System, Central Locking System,
Inside Lights
Central Electric
Constr. Components
Plug Connections, Ground Points,
M-Numbers, Abbreviations
Current Flow Diagram 97-367

Wiring Diagram Type 928 S4/GT
Model 91
The wiring diagram comprises of 12 individual wiring diagrams, 1 sheet construction components
and 1 sheet plug connections, ground points, M-numbers and abbreviations. They are subdivided
into coordinate fields.
Each individual wiring diagram comprises a part of the central-electrical system within a dash-dot
frame.
This part of the central-electrical system shows all the lines and relays required for the individual
wiring diagram.
The ground-connecting points are designated with “MP” and their location is shown in a vehicle
diagram.
The lo-pole plugs on central electrical system are clipped together from 3 pans
Part 1, with the cast-on fastening pin, is the “initial element”.
Parts 2, is the “module element”.
Both parts are identified by the digits 1......5.
Part 3 is a “coding element”.
The designations of the plug connections in the wiring diagram for central electrical system refer e.g
from A 11 15, to the “initial element”, from A 21 25 to module element.
Printed in Germany-XXVI, 1990

YZ8
S
Model.
Yl
Sheet1
LIGHTSROWOUTSIDE
A
B C 0 E
F
G H
J
K
___-
SIDE TURN SIGNAL RIGHT LIGHT SWITCH HAZARD LIGHT SWITCH
! iigg+~~
_-_---_-- --_-.-
: 10
-_
Tag
n .x nc ,“C
1
,, I i I, I,
IW /-
v
HEADLIGHT TURN SIGNAL/OIMMER SWITCH
1
.---.-y--I
ASSEMBLY RIGHT
POTENTIOMETER
s
m
0
GP V r,
m 0.5WEL dl I
2
Ii
55
::
do
N
ALE0 HEADLIGHT
7.-
. . . -.-.-.
.-.-.v. _-.-.-.
I
I- IIIIIII
I
I I I
II I
I I II - I II
I- I I I I - I- + IIII IIII II - I I
.
._I.-.
-l-t I
I
2’
J j,,
I” I I,, I
10 WT/EK .a, I Ll
5- 3-
011A - I
31 aa] -
0112
I
-
I I I
K-
,,I-, 1
I
II-
I I
I II III Ill I II
I I
XXIII-XwdIV
n.,, Y .a.,, n
1
-
2
-
3
-
4
-
5
-
6
-
7
-
3
-
3
-
0
I
I
F
-
“IYL I I”ILL*Y
:ENTRAL ELECTRICS L-
I I
MP III MP xl \ ” ,MP V
GP I
MP II
MP
MP v, 0 CONNECTING DOINT
c
c MP VII 0 CONNEC-‘Ok W’Tr QLC OATA
/ GP GRWNC PGIN-
WL WlRlNG LOCM
MD YII I Y? IV
GP IV
,r “2, M? VIII
. I I I I I I
A I3 c u E
F G i K
Printed in Germany- XXVI,1990 97-369
BK = BLACK WT = WHITE RE=RED GN = GRa y: i “r! !“W GR=GREY BR = BROWN BL = BLUE

Wiring
97
1
F G H J K L M N 0 P
Lj CLOCK
.--- BULB CONTROL UNIT
; ,-mwLlfHTSWITCH _ -__ _-HAZAREHI SC! _
----.--
1 .;d-Jq I ‘A”N2o”mT%y$cKc~~
i ~“~~Lf I 1
TAIL LIGHTS RIGHT
-
2
TURN SIGNALS
BACKUP LIGHT
SWITCHIM4811
'WL16
6
TS
8
SIOE MARKER LIGHT
& 1 TAIL LI&;FT
TURN SIGNAL/OIMMER SWITCH
AI 151I’
III1 I
2 0 BK/WT/5N
1
I
H f I I I 1 1 lgl 1
I ’
I 0.75 WWT
I I I
- I I I? I 1 r-t
c
Y =
_ 2 ,;s G6 >
.-.-.B.1 .( .-.-.I.-.
NYYI
-
8
13
-
,OfJKlWT
..-.-.-.-.-.-.m.-.
P
1
z -
-1 /
- ,-
I-
T 1 LJ LJ I I
7-
i-
t
I 1 I (
I
- N13
r 525
r
1 I I I I I I I
I I I I
Illll I III I Il-
408R
GP VI
WL 4 IC
5 i
c&c :
P4z :
10 B1(1RE
0 75 GQAK
L
0 75 (An3
LIGHT COMBINATION
ONLY MZ49
I I L -
-_---.------- _--
:b.Tdu;.~--
-.-.-.-.-.-.B.B.-.-.-.-.-.-.-.-.
.w.-.-.B.B.B. j
STOP LIGHTS
, - -
M Tll
cl
CONNEC'ING DOINT
MP VI
MF VII 0 CONNEC-ION W'TM FIELC DATA
GP GRWNC POIN-
WL WlRlNG LOOM
IM6021
F G H J I K L M N I 0 P
BK = BLACK MT = WHITE RE=REO GN = GRECU YE : "F' !."W GR = WEY BR =BROWN BL = BLUE VI = VIOLET PK = PINK
Wiring Engram 97-369

Y28
S
Model
91
Sheet
2
LIGHTSUSA OUTSIDE
A B C cl E F G H J K
SIOE MARKER
LIGHT RIGHT LIGHT SWITCH HAZARD LIGHT SWITCH -
.
1
-
3
6
-
8
1
11 Q
T
1 .I
.’
4,;:
::
7 Id
:
/I:
:h :..
:”
II +tf
:*
; Iji
:.,
I++ I..
;, 12
‘_I
TURNSIGNAL/UIMMER SWITCH
Jol
G
TITURHBNUS
$ $=3=
s
I
Low&AM
r:
r
STOP LIGHT SWITCH POTENTIOMETER ::
FOG LIGHT SWITCH FOR INSTRUMENT LIGHT
a
c
.-
:z
L
:
0
I
E
Cm-
.
I
.
‘v ’ ;F;;ALEO HEAOLIGHT
CONCEALEO HEAOLIGHT
MOTOR
-.
I -2r-l
-1
1 25- I I
I -1 I
I
I I I I I I II II I I IIi,d i
c22.J
I I
I I
I I
L _.A .
I I Cl‘,
0122
I CZlj
CONCEALED HEADLIGHT
my
- I r-7 us,
1 tall;
I I 11 s-
1 02lJ
I 011:
I L
, ,?I, I
I n co1
-
Tr
GP I
II :
I/ . I
31 GROUND
.
! !!
L.-.
4!!?slb
70””
p
i-
‘:;,.‘i,i
--.-.-
3 10WTm
GPV ,f’
82
;!3 I
2y
E
56 I
.
XXIII-XXIV
LIGHT COMEINA TION BACKUP LIGHT XVIII
ONLY M249
-.-.
SUPPLY x
TURN SIGNALS
SIUE MARKER
LIGHT LEFT
l.A’I-.J I---I--J
FOG LIGHT VII FOG LIGHT IV
-, -. -.-. -. - .LICIHTn! -. Lz:
MP IX
MP III MP. XI \ .MP V
.-_-.------
---.-.-.-. . .
STOP :lGnTS “+p 144
MP II
MP I
cl
CONNECTING POINT
0 CONNECTION WITH FELO OATA
GP GRMNO POINT
.MP VI
MP VII
UNMARKED LEAOS
ARE WIRE LOOM 3
MP wn
BK = BLACK WT = WHITE RE = REO GN = GREEN ‘fE = YELLOW- GR= GREY BR = BROWN
Act -5-1 BL = BLUE
Printed in Germany- XXVL1990

Wiring
97
F G H J K L M N 0 P
1 CLOCK
*.--.-I-...
m :
LIGHT SWITCH HAZARD LIGHT SWITCH - E
IULB CONTROL UNIT SIOE b-‘lARKER LIGHT
1
-
4
6
; I#2491 STARTER LOCKOUT
AND BACKUP LAMP SWITCH
TURN SIGNAL/IlIMMER SWITCH
1
JOI
----
s=
TURNSXiNALS
f $+
LOWBEAN
13 TAIL LIGHTS RIGHT
BACKUP LAMP
BACKUP LIGHT
SWITCH IM4811
LICENSE
PLATE LlGHl
BACKUP LIGHT XVIII .
ONLY M249 I
--;P VI
TAIL LIG+TS LEFT
BACKUP LAMP
STOP LIGHTS
_ _ _I
T~MEIJNNING
j
-’
LIGHT III L-‘--.--- _--A.-- 1
-.-.~.~.~.I.~.-.~.-.~.~.-.
cl
CONNECTING POINT
MP VI
MP VII 0 CONNECTION WITH FIELD DATA
-$! GP GRDJNO POINT
BK = BLACK WT = WHITE RE = RED GN = GREEN YE=YEuow GR = GREY BR = BROWN BL = BLUE VI = VIOLET PK = PINK
Wiring Diagram 97-371

YZ8
S
Model
Yl
Sheet
3
BODY B c 0 E F G H J K
HE:AOLlGHT WASHING WINO! iLD WASHING
FLUID PUMP FL1110 MP
f~‘\~
1
I
-in
1'
MOTOR SUN POWER WINOOW REGULATOR
I
ROOF MOTOR ORIVER’S SIDE PUSH BUTTON SWITCH
IM6501 FOR POWER WINOOW
: .,
ORIVER
T-T!
PI
“‘“““,,“r’~;,
1.w ;:;ym
G
II I .e
L: _, ::
c
*“T N
d’
--L
7
2;:: z
2 P
T
W.36
2 2 000
NNN
SWITCH
INTENSIVE CLEANING
3
5’
n
IW
0.5 EK
GP IV
,GP v
,::.f-:’ -? 15BK/GR
STEERING IGNITION LOCK
PUSH BUTTON SWITCH
FOR SUN ROOF IM650) I I I
I I I
A
GP V
I I I I I
POTENTIOMETER FOR
I
.
WIPING/WASHING
I I I
_-
L
.
I
1
JI‘ 1 I I I I I I
.
023J
1
III
05YE
d
H53
-I
1 IIX
r
WINDS1
-lIELO WIPER MOTOR 021 .
an3
I I L 024;1 1
L-
115:.
L25A
WIPE /WASH SWITCH
-
-_--
L
I.5 WBl L -
22.
0 5 ERNT
05ewWT na
izg !,, *-
.r”“.-”
1.3MlY” .
r
^ , 1.5WERl2Ll.J
‘“;;-al I:,!,,
II
*cm
.-
,u.
KC. I
I I,,- 1 I I I
,, ,:~~.$#-py
1nAN/A
.._ -.- .-
ID&--
._.
l i'll II'
I
\
0.5 WT w5,
I
\\I/,, I wn w
1 GP II 20 BnM or33
-! I
19
TWO-TONE HORNS XVI
1 1
iI....Mmi
-_-,
I I
I m
-A m---I
I
2% WIPER INTERMITTENT Xl AOOITIONAL CLEANING HEADLIGHT CLEANERS Vl
I
CONTROL FLUID PUMP IX
9
0 1.0m I I
1
J 31 IGROUNDI
L
CENTRAL ELECTRICS I I
30 I
.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-I- -B.-.-m-.-.- .-.-.-
TWO-TONE HORN TWO-TONE HORN
A
B C D E F G H
J K
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
Printed in Germany- XXVI,1990
BK = BLACK
WT = WHlTE RE
q REO GN = GREEN YE = YELLOW Ge : GREY
BR q BROWN
97-373
Bt q BLUE VI = VlOLET

Wiring
97
F G H J K L M N 0 P
PUSH BUTTON SWITCH
FOR POWER WINDOW
PASSENG. SIOE POWER WINDOW REGULATOR
MOTOR PASSENGER’S SIOE
:R WINDOW REGULATOR
OTOR DRIVER’S SIOE
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
2(
PUSH BUTTON SWITCH
FOR POWER WINDOW
ORIVER
!: .I
:’ ”
9
ti: N
_-
:.
“7-l
$3
I
22
L21
G
UI
ma0
00
3
5
3
T22
III I II I I I
CONTROL UNIT POWER WINOOW REGULATOR / SUN ROOF
I I I -----’ FCRRHO.
Fi”Elirn L WI cc-!dNiim
WITHAn.2
GP V 2
L
3
.-
I
i2
-.~.~.~.~.~.~.~.-.~.~.~.-.-.-.-.-.-.-.-.-.-. 4-
REAR WINOOW
WIPER RELAY
31 IGROUNDI
/ REAR WINOOW
WIPER MOTOR
*
2u
MP IXI
MP III MP,X’ \ ,MP V
_-.-I
INTERMITTENT Xl HEAOLIGHT CLEANERS VII
GP V f
1 1 _l” I
. . . . . . . . .
-. -.
MP II
MPI
MP VI
MP VII
cl
CONNECTING POINT
0 CONNECTION WlTH FIELD DATA
GP GROUNU POINT
MARKED
CS ARE WIRE LOOM 3
F G H J K L M N 0 P
BLACK WT = WHITE RE q REO GN =GREEN YE
q YELLOW GR = GREY ER q BROWN EL q BLUE Vl.VlOLET PK = PlvK
Wiring Dingram 97-373

Y28
S
Model.
Yl
Sheet
4
INSTRUMENTCLUSTERANDSENDERS
A B C 0 E F G H M K
STARTER INTERLOCK SWITCH
ACKUP LIGHT SWITCH M2C9
INSTRUMENT LIGHTS
, PARKING BRAKE INOICATOR SWITCH SWITCH OOOMETER
d CONTACT BRAKE FLU10 RESETTING ROW
INSTRUMENT CLUSTER !
-.-.-.-.-.-.I.-.-, I
/ , i I -
21
-
22
-
23
-
?4
-
25
-
2e
-
2-i
-
2E
-
2s
-
3c
SENOER 0.5 0Lrn 05 mm o- OUTSIDE TEMPERATURE
SENDER - FUEL LEVEL
r b’”
0 5 WBK
SENDER - COOLING WATER TEMPERATURE ’ .o;‘, o,5 BL,YE I AhhhhA J-50
TERM 58 0 1 10 0 5 WEK I I 1.11 I w ,“I s
05w. I
OIL PRESSURE SWITCH
I I
rYlDtCAID00ccc,,0c I I I
ILI.VLI. “IL I IILIIU..L
BRAKE PAD 1
L;:ET;,oyl;
SPEED
TRAILER TURN SIGNAL
SENOER - GROUNO
TURN SIGNALS
HIGH BEAM
TERM. 15 (CARGO 4
PSO - WARNING FUNCTION
REAR LIGHT
TIRE PRESSURE
PORSCHE LOCK OIFF. - FUNCTION
WASHING FLU10 LEVEL
STOP COOLING WATER LEVEL
COOLING WATER PRESSURE
TERM 30
TERM 30
TERM. 31
TERM. 31
I
.
I
.
I
.
I
I
.
I
.
I
.
I
I
TERM. 15
TERM 15
RADIO RX
RAOIO TX
BUTTON ITOPI
BUTTON ItOWl
BUTTON (PRESS1
OIAGNOSIS L
DIAGNOSIS ON/OFF
OIAGNOSIS K
SEAT BELT WARNING
SPEEOOMETER RESET
BUTTON (PULL1
.
MZ?+J
I lo.23
I P MM.
SIUE MARKER LIGHT
SWITCH STEP P
SWITCH STEP R
SWITCH STEP N
SWITCH STEP 0
SWITCH STEP 3
SWITCH STEP 2
SPEEOOMETER 'A'OIOTAL OUTPUT
V-SWITCH IEIUZZER OUTPUTI
SWITCH STEP ISU/SPI
I
.
-.
I CONNECnON NO.121 IIilAGNOSIS
uhw~k~io ‘LEAUS
ARE WIRE LOOM 3
FLlEL LEVEL
SENDER
SPEEO WARMNG BUZZER
IM2151 INFO SWITCH
A B c D E F G H J K
L
BK = ELAM WT
q WtOTE RE = REO GN = GREEN YE = YELLOW GR = GREY ER : BROWN BL = BLUE Vl = VlOLET
T.” 7-r
Printed in Germany- XXVI.1990 Yf-513

Wiring
97
F G H J K L M N 0 P I
SWITCH ODOMETER
SWITCH ODOMETER RESETTING MS53
RESETTING ROW 0
IX
ATOR SWITCH
;E FLU10
cl
CONNEC TING POINT
0 CONNEC TION WITH FIELD OATA
GP GROUND POINT
21
-
22
-
2:
-
24
-
2:
-
2t
-
2;
-
2t
-
25
-
3(
TOOTHEO BELT
TENSION SWITCH SEAT BELT
zle?ejtwz l- .-.-.-.-.-.-.-.-
mblmmmyI
dddadd
. CENTRAL ELECTRICS
aatr*+ P I
::MRL4S8 -
i
RELAY SOCKET OMIY FOR LHO
TIMING RELAY IM2 15M5531
I
t
1 m
ls$l OIL LEVEL SWITCH
. ..#
COOLANT TEMP
SENDER
I ,
I
.
M234
I h-27-l
OIL PRESSURE
CATALYTIC CONVERTER
THERMOELEMENT MONITOR
NO.2 SWITCHING UNIT 2
- T
I I i5-7 -,?
WASHING FLUID
I------,,
THERMOELEMEh
NO.1
6
COOLANT
a LEVEL SWITCH
n
3
/T23--. v
“‘r C3NNECTION NO 121
I
DIAGNOSIS
’ FUEL LEVEL
SENDER COOLANT
4
F G H J K L M N 0 P
BLACK WT = WHITE RE = RED GN = GREEN YE
q YELLOW GR q GREY BR = BROWN BL = BLUE VI = VIOLET PK=PIM(
Wiring Oingram 97-375

Yi%
5‘
Model
Yl
Sheet
5
ENGINECOOLING,HEATER,AIRCONDITIONER
I I I -
I I I I . . I I I
THERM0 SWITCH
n CONNECTING POINT CONTROL SWITCH
AIRCONCIITIONINGSYSTEMBUTTONPANEL
EVAPORATOR
FREEZING PROTECTION OUTSIOE CIGAR LIGHTER
; fiAC SWITCH REAR WINDOW BLOWER SWITCH
-r RESISTANCE [i;
1 I ._ .-_-
TFMP SFhKflR c
OEFOGGER SWITCH
CONNECTION WITH FIELD OATA
_. IL,.I_..
GP GROUNO POINT
3'
-
-
-
-
F
d
-
17
-
18
-
;9
-
80
INSIOE TEMP. SENSOR
; BK/RE
IL III IJ 1-l I F 0.5 EK/WT
u-.-, :..
. . . .’ :12 0.5 YE
” 11 1 0 5 WRE
“““. “x)
I
I”,::‘::; .:, si
2
::::” ‘ A 0.5 YE
SYSTEM 1 I I “Cmm
i:‘::~: ~~: “.,“l> I
n
CONTROL UNIT
AIR CONDITIONING
1. ‘....
C’, b’
,. .J
: :- 1 I 0.5GR
.... ,,’ 2 0.5RE
I +=I%
3 0.5BWRE
‘
I: $i I
1, 0 8 0.5OR
..: 9
9
0.5BUM
I.
m 0sOR
t..:’ _-
MICRO SWITCH
CENTRAL NOZZLE
WATER
MV5 n
ADDITIONALAIR
CONDITIONER
(M5701 I -
.-.-.-.-.-.-.-. -
I
GP V t
GP II
GP II FOR LHD
GP I FOR RHO
I I
BLOWER SWITCH
--1 -_-_~ EVAPORATOR SENSOR RESISTANCE IROUP
IMPACT WALL
*
J
I
CIRCULATNG AIR FLAP
MV6 -
h.3
OEFROST FLAP
05 01 T18
I
t i
u
FOOTWELL FLAP
MVI -
TEMP SWITCH
INTAKE PIPE THERMOSWITCH
COOLING WATER
Printed in Germany- XXVI.1990 97-377
BK = BLACK WT = WHITE RE = REO
GN = GREEN
YE = YELLOW GR = GREY BR = BROWN BL = BLUE

Wiring
97
- _
EVAPORATOR
!EL FREEZINGPROTECTION OUTSILIE CIGAR LIGHTER REAR WINDOW
-- TEMP. SENSOR -r n DEFOGGER SWITCH BLOWER SWITCH RESISTANCE GROUP FRESH AIR BLOWER
31
-
32
-
3:
-
34
-
3:
-
3t
-
3:
-
3t
-
31
-
4(
SOLENOID CLUTCH
COMPRESSOR
T18
OIL TEMPERATURE IM2L91
an %'n SWITCH TOROUE
, (15
r
-n/ I t iii II I I I II IIIIII II -
OSFWGN $11 6: ‘1 :;f&
.
LO24
I-
I
r-t=---
T35
c
.
I
.
/I I
-. .
W26 022
IITIONALAIR
‘OITIONER
(MS701
I
I i L.-.-l
SUPPLY x
~I-.L.JI,L.AG ,,‘.-.---.---‘~ ‘L’.L.-I,
E
1 I
BLOWER SWITCH EVAPORATOR SENSOR RESISTANCE GROUP GP II FORLHU
GP I FOR RHO T
GP II
NTIOME
T T
I
,---
7s
FY
- w
0
1 Y 13 a 10 m
n
i&LA -.- I - 35 .y’T’ 35 WL 2 ,rr.( 2 -.- 2
i
WL 1
eI I
T18
c
s
- I
---.-. I
/
IN IOWT
‘-6 1 Iv;
I
BLO'iER MOTOR
.-.-_ A CONTROL TEMP SWITCH THERMOSWITCH PRESSURE SWITCH
INTAKE PIPE COOLING WATER FRIGEN
CONTROL UNIT
FRESH AIR REGULATION BLOWER FINAL ST-GE
------i lo BR Y I
F G H J K L M N 0 P
BLACK WT : WHITE RE = REO GN = GREEN YE = YELLOW GR = GREY BR
q BROWN BL = BLUE VI = VIOlsET PKsPw
Wiring Dingram 97-377

928 S Model. 91 Sheet 6
OUTSIDEMIRROR,POWERSEAT
A 0 c cl E F G H J K
MIRROR
PASSENGER’S SIOE
IM261. MS281
I
CONNECTION POWER
SEAT RIGHT
-
cl CONNECTING POINT
[7 CONNECTION WITH FIELO OATA
GP GROUNO POINT
WL WIRING LOOM
f
GP v
c4
Y
1
CHANGEOVER SWITCH
& GP
IV
.raifr= I
1111
T20
OrnO..
Fr
i
45
WL 167 F
6 E
5Y
s .P
iA
-
II
SPORTSEAT
1
J
T20
MIRROR SWITCH
4 3
1 2 ‘4
4
46 (M383. M3871
B 8
6!$
s z
zr
WL34f
NOT APPLICABLE WITH Ml39
M340.M586,M513
-I
T
I
t
-q--.---.
MIRROR
ORIVER ‘S SIOE
I- -.-1
1 ..i
$!
2-WAY SWITCH Q
.!A
1 2 3
5 6
CONNECTION POWER
SEA TLEFT
SEAT CUSHION
HEIGHT CONTROL REAR
-'I . Tlzt;’
I-- 1.5 t!WGN
“’ , 158R
;4 .M. ’
iz
1 15RE
Ix-:’
15eKM n
1
-
c9
-
50
MP IX ‘WIRING LOOM
MP III MP XI .MD ” ON SWITCH
b+ Z-WAY SWITCH SLAT LUMBAR lMS861
HEIGHTCONTROL IM5131
MfMP II MP VI SEAT CUSHION
MP VII HEIGHT CONTROL FRONT
MPI (
J&y-.;I[
MP I I I D--\-z- SEAT LUMBAR lM5861
Mov I I \ CURVE CONTROL IM5131
.: . ...?
1.. ..
, m :kl .’
EL
1.:.:...:., :.
SEAT HEA”
POWER SE”
INVERSELY II
WITH LEFT
\ WL 337
M340. p
1 I
A B c 0 E F G H J K
Printedin Germany- XXVI,1990
BK = BLACK
WT=WHlTE RE=REO EN = GREEN YE = YELLOW GR = GREY BR = BROWN
BL q BLUE VI = VIOLET
97-379

Wiring
97
F G H J K L M N 0 P
AIIJUSTABLESEAT HEATING (Ml39, M34 XII 4
-
4
-
4
-
4
-
4
-
4
-
4
-
4
-
4
-
5
CONNECTION POWER
SEAT RIGHT OELAYING RELAY SEAT HEATER SWITCH
i:: :j::,:’ j: I
:I ;,I ;i/ [
I :.
: :: :..: I.. ..I i :.,
,r. .+. : : ..! :
r z!*
I
-. ._ I A .-
: 1 2
w
WL 337/338/340
7 r- g g
one Cl CMCklTr
JL”I
E-r:
Ti’ ....!
F
.I. :.:
.:. ::.I
: ..:
,. ..: *
I: ..:
I!
.L j
1 2
E53
0
E -
JlYLLLLllLl”I.7
If-?’ 7 r-7
:
1 1 I
: :
_: . :
a :’ “‘.
-Ill
1.L1 ; 1 I.* 1 ;
5 3 3
” -
0 ”
--.- _ rT-r -.-7 -’
SEAT HEATER ANO
, POWER SEAT RIGHT
:.... “.
INVERSELY IDENTICAL
WITH LEFT
-A-I
CENTRAL ELECTRICS .
.B.-.B
COMFORTSEAT - STANDAROLEFT
T20
[ GP IV
PORTSEAT
1383, M3871
‘---I
[ @
2-WAY SWITCH,
LL
I 6
7
\
WlRlNG LOOM
ON SWITCH
G -WAY SWITCH
4-WAY
jr.?j ;i y:“tfy:
a::
. .:. :: .: I
.:......:
III’ i- ~ -
....... ......I.:I.
.....
T::: ;:I+
T20
v.
WIRING LOOM e
lJNSW’TCHI I II
158R I
‘1.5RE 1
SEAT CUSHION
HEIGHT CONTROL FRONT I I
CONNECTION POWER
SEAT LEFT WL 343,
NOT APPLICABLE WITH Ml39
M340, MS% MS13
SEAT BACK
FORWARO CONTROL
SEAT LUMBAR lM5861
HEIGHT CONTROL iM5131
’ WL 337 WITH M139.
M340. M513. M586
6
F G H J K L M N 0 P
c q BLACK WT = WHITE RE=REO GN
q GREEN YE = YELLOW GR=GREY BR = BROWN BL = BLUE VI = VTOLET PK = PINK
WiringOingrom97-379

Yi!tS
S
Model
Yl
Sheet
/
(M537.M5381 SEATANDMIRRORMEMORY
YEMORY SWITCH RKiHT
51
-
52
0.5WT/ch
CA--- -
d 0.5WT/sL
d 0.5WTmE
:9
05WT
0 5 WTmK
15 RE I
1‘
C-
-12 II I I 1.5OR I I-- -“- I I IIIII III1
.. A i - i .-I
II II
PLUG 6-PIN lLHOl
C
h 0.5 BK/EL I
/I
-...~_-. -
I,
........... ....
........... ....
......
....... :.::
......
::: ::: :::
I.. :;: ::,
.: .:
.:: :::
. . . . . .
::.
-i :,j
:
-.-.
:
:.
::
:..
.:.
:.
:.
:.
.:
Iii.
.:
:.
‘:’
RHD
: ..
..: ..:
0.5 EURE 8
05WTlGR Q Cd'gjPLlrt+QQl$5jT~i:
c-j KITOR@??GHT ::: : i
, ..:..:::
ELEC. HEATING
ELEMENT FOR BACKREST
54
6 Y
“?
SEA1
JISCONNECTING POINT 0 2
SEAT BACKREST *Ji:
GROUND
FIREWALL LHO
I STEERING CONSOLE
I
55
SEAT SIDE
ELEMENT HEATING ELEC. HEATING ELEMENl
FOR SEAT CUSHION
I
.I
56
GROUND
STEERING CONSOLE LHD
FIREWALL RHO
5-Y ’ 05WTKIR 5
lq
05ntm
EL
0r ‘
’
IG
0I RUOK
M ’ SW
BR
i nR Era
05‘H/M
G
05OR/W
OSRR
1
57
-
58
I I
2
BRjI 05mm
4Ml 6E‘b
OSE
;@=I
GR 1 OS GR
hH n 0 I GN
HZ .
-_
WL 167
DRIVER’S SIDE
t
59
A
B c II E F G
H
J
K
Printed in Germany- XXVI,1990
BK = BLACK WT.WHlTE RE q REU ‘3 q GREEN YE = YELLOW GR = GF!E?- BR I BROWN BL = BLUE
97-381
VI = VIOLET

Wiring
97
I I , , I I
CONNECTION SEAT BACKREST
-
CONTROL UNIT SEAT PASSENGERS’S SIDE
u
I I I
IJ ,,..zs
ELEC. HEATING
FI FMChdT Elm FIAmmFZT
10'2 51 3 p
LLL, ,-,. v,~ V-C.~.,LI
SEAT SIOE
ELEMENT HEATING
t:.i.n n l7TL--Lk I
ELLfi+j ux- -’
III2
1 !11:,,J;~08~~ 71 ., ‘~$LLJi J‘r’plt”Ft’
1
4 ‘LplS ;yLT---~
4.WAY SWITCH
1
. .
SEAT SIOE CI CT “CATNr. Cl ChKhIT . . 1 k-‘-:-l 4-WAY SWITCH
S’
-
5;
-
5:
-
51
-
-
-
-
6(
ELEiliNT HEATING LLLC. Ln I l,lY LLL, IL,. I
FrlD CC&T r, IQmhl I- L-WAY SWITCH
11 .- .*
. - - - .nm, I- 1.oER * ryn------r
h-WAY SWITCH
4-WAY SWITCH
1:r -
. - ‘m
SEAT HEATER SWITCH
r-1-k zk
-_ _-_-_-_
,2 i
+oyAzty-kL _- . -ll~f$- - - _- * -
2&gji&_.
” 142 5I f$ 1
-
11
112
I>
. . _ - _ CONTROL UNIT SEAT ORIVERS’S SIDE
.-
1 N .
1
.---.-.-.
to OK
2 5 N/YE
_-_-
, 256%
I
IO&3
0.5 Emi
15 OR
IS RC/wT
0.5 WTrn
OS!4
OSwTmE
.
m
-l
I OSWT/BL I
I Jl
I 0.5 WTm
I
I
I
05WlM
rT
I I
I I
I
075kWE.X
I
I
CONMCTffi PDNTCONMCTffi PDNT
0 CONNECTICN WlTb FM DATA0 CONNECTICN WlTb FM DATA
GP GROUNDF0lITGP GROUNDF0lIT
WI w3?NGLom
“3Ym107
05EtxR I BrSUF’+JTHJGHI_
CONMCTION SEAT BACKREST
F G H J K L M N 0 P
WT = WHITE RE = RED GN : GREEN YE = YELLOW GR=GREY BR
q BROW BL = BLUE VI = VIOLET PK
q PINK
Wiring Diagram 97-381

YZ8 3‘ Model Yl Sheet 8
RADIO,TELEPHONE
Wiring
97
SUPPRESSOR
Tj&J
Y
ROOF ANTENNA
TELEPHONEPREPARATION C-NETWORK M 612
(Philips “Porty “I
COMBINEDRAOIO ANO
TELEPHONE ANTENNA
61
62
63
-
65
-
56
-
57
-
69
6
-
6
-
6
-
6
I
NOT ON C-NETWORK
r-1
20 WT 2.5 RE
TRANSMITTER-RECEIVER
C-NETWORK
NOT CONTAINED IN M612
TELEPHONE RECEIVER ..A ANMNk- :!
I.. c.- I ,
L- .:. :’
.-.-A COMBINER
:
NOT CONTAINEO IN Mb12
3 u
C-NETWORK SUPPLY
w’R=t
f
Icsl PLUSLEA0 4 0 BK
632 TEEPHCM
IN BATTERY COMPARTMENT 2
I
.
3-y-- i
,,,tl “Tg 1 j
I
21
. I
I
TELEPHONE .
TERM.15 4 -
LN24
1
.
43
05GN
1 ) RAOIOMUTE 1
0.5 PK
RADIOPLUGCHAMBER 3
NOT CONNECTEO
u
ANTENNA
EXTENSION WIRE
ALARM CONTACT
El
IN CO-PLAYER 40647
I
GP V
I- 0.5 GR
NOT CURRENTLYCONNECTEO
0.5 WT
L
FRONT LEFT
HIGH RANGE
RADIO SPEAKER
FRONT RIGHT
HIGH RANGE
RAOIO SPEAKER
L
.-.-.-.
CENTRAL ELECTRICS
MIODLE RANGE
SPEAKER MIOOLE RANGE
SPEAKER
GP I
TELEPHONE PREPARATIONCELLULARM195
(Motorola1
OEEP RANGE
SPEAKER
OEEP RANGE
SPEAKER
REAR LEFT
MIOOLE RANGE
SPEAKER
HIGH RANGE
RAOIO SPEAKER
Y
ANTENNA CELLULAR
WIRING LOOM
CELLULAR
TRANSMITTER-RECEIV=R
NOT CONTAINEO IN M612
CELLULAR
NOT CONT4lNEO IN Ml95
cl CONNECTMGPOINT
TELEPHONE RECEIVER
----_
I
CONNECTIONPLANBOOSTER
iGYZ+ 1
MULTWEM
BWKf
I
ii._._;
NOT CONTAINEO IN Ml95
CONNECTION LOUDSPEAKER
IFREE-HANOEO SPEAKING1
0 CONNECTIONWITH F,Eto OATA
GP GROUNOPOINT
70
8
Printed in Germany- XXVI.1990
B C 0 E F G
H
J K
97-383
BK = BLACK WT = WHITE RE = RED GN = GREEN YE
= YELLOW GR=ERm
WiringUiagram 97-383
0R = BROWN EL = BLUE VI = VlOLET
PK = P[NK

YB
S
Model
Yl
Sheet
Y
ABS,TlREPRESSURECONTROL,AIRBAG,PORSCHELOCKDIFFERENTIAL,BRAKEf'AD WEARINDICATOR*TRAILERCOUPLING
CRASH SENSOR LEFT
ABS - ANTILOCKSYSTEM AND PSCI- PORSCHE LOCK DIFFERENTIAL
KY.:-:
4:;; j:j 1;; 1:: ,:
:
“’ “’ : “’
.:.
t::‘.
” .:
‘.
1..
._-_- ._-_ ----- _-_.-_-_-_-_-_-_.-_-._-.--._~-- --
.:. ‘: ” :’ .. ”
‘:’ :::::::j ,:,, ..::.:. .I,; “’ :: :_ :. :. .:. .I.
:::. ...... :.
.I” ,,I : I: :, :. :::, ;.. .,,,, ,.:,.. .:,I :: :...... :. :
: : :.
.: .: : : _-
::
““’
““’ I
AIRBAG
.::.,, : : : : ”
::
:.: ::.
“: “’
I
“’ .:’
_ _ -
P
--
(
P
”
c
.-
: I LEFT
GPX ’
0 Iffy
I:: ::_ ;; j,
.I F=---
NWF .zwFi
mmdl STRAP I
g !
L -- -
m 928.61210901 c
1.0GWWT
1.5EN/W
” “. :.
-_-_-.
5
:
” “:
.:
:’ : :: :
----
?/====i ACCELERATING SENSOR IM2211 gI
ib
!yI
0
I
GP IV
-
72
-
73
SOLENOIO VALVE
r”P.
--
HYORAULIC UNIT
ABS
I I I
n 1‘ .-
I 7 m
CIISCONNECTIF
III III II’ I
III OS WT II
?I tC
I I
I
I I I I I 5,&(mj 1 POINT
’ II II I hlrl -2
I
OSBL
I
I I
75
r
GP IV
76
WIRE CONNECTOR
7,
COMBINATION LEADS
+ ------I--
‘Y
ii f
J 1
---7
II I \
Ii3 iI
s’-‘ i,Uli. z
098A
‘;.jz
&I+L-
MP I-
MP III MP XI \ .MpV
MP II
PRESSURE WARNING
SWITCH
WL 121
RDK- TIREPRESSURE
PUMP
PUMP RELAY
MP I
-MP VI
-MP VII
39 E 39 E 36
OE
2' g z =E 2' B z OE E B 2' g z 0s 2' B P
2 z w Y B w
w
q d
E
B z z s
e :
B s
kc4 s
% q
2 E m Y E E5 5 k % + k
vl v)
REAR RIGHT REAR LEFT FRONT RIGHT FRONT LEFT
8C
111 All
MP ‘. JI
BK = BLACK WT = WtOTE RE = REO GN-GREEN YE = YELLOW GR = GREY
nr, -b-r BR = BROWN BL = BLUE VI = VIOLET
Printed in Germany- XXVI,1990
YI-205,

Wiring
97
rR.TRAILERCOUPLING
F G H J K L M N 0 P
PSD -PORSCHE LOCK DIFFERENTIAL
CRASH SENSOR LEFT 0.5 UT
III_ ..: t ? 7
c .: -. ?. - - -
! ‘:. ::. j...jj.... ---7-T.
i ;I: ;;, ;;, 1;. : : : AIRBAG CONTROL UNIT : : i: ! 1 i
AND TRAILER C0UPLIbG.G
7’
-
7:
-
71
-
-
7!
-
71
-
7’
---
:.
:.. .:.
” :
- _
.:
(M 208)
PLUG SOCKET
TRAILER COUPLING
- --m-.:,.-. -
.:
“’
I
: -.JIc
j:
:Y
IT
_-..-.
h
-4
----
-.-‘,~‘~~~-~‘-‘---- :
: :
A :’ “’-
5
_ -
ACCELERATING SENSOR 2I ,n It- ;htlN” CONTACT
WITH HORN CONTACT qmurr
000~
’ 05EK/RE ,
I
BLlWT0 5 CRASH SENSOR RIGHT
1
28 I
GROUND ABS L
.
.
I
a7 6 31 30
:.
:: . ..- ::I :
!iii!lk
:
. . . . . . :. I
"' ""1
.:.
:
:. :..
.: :: :
:. .: :. .:I
- _ -.- -
i -
I
GP V
.
I
0.5 BK/WT P14] 40
. -
I
,
I
.
I
I v.3 111
0.5GNlBK
05WT/ex
0.5 BLrlE
0.5 vlim
05VVGi
0 5 Vi/WT I
I I
I I’ 0.5VI/YE
, II
‘,‘.
,20. ,I
'3 : .!
!d!
29
I 28
XV ABS
n
I I’
OSER
I CONTROL UNI:
TYRE PRESSURE CONTROL SEEStlECT1
RELOMS7
KmEcTm m ENTRAL E!JITNc
i-525
.-
1 m
r
.
, WL 121 1)
RDK - TIRE PRESSURECONTROL
CENTRAL ELECTRICS
MP IX
MP III MP,Xl \
El
CONNECTING P’ rCilNT
0 CONNECTION b.‘ITH FIELD OATA
GP GROUNO PCINr
MP II
MP I
MP VI
MP VII
MP VII
FRONT RIGHT FRONT LEFT
F G
BLACK WT = WHITE RE = REO GN-GREEN YE = YELLOW GR = GREY BR
q BROWN EL = BLUE Vl = VlOLET PK = PINK
Wiring Dingram 97-385

YB
S
Model
Yl
Sheet
IO
MOTOR.FUELANDIGNITION.CRUISECONTROL
A B c 0 E F G H J K
IGNITION COIL IGNITION COIL
- _.- -.-._.-.
Ta 1 BRIOGE
u
RIGHT LEFT
CONNECTING POINT MT WITHCATMYZER
,--- ,-
BATTERY
lxl
CONNECTION WITH FIELO OATA
1 .I I?-?..,.T-n
“’
HI. Itlow I UK IGNITION CIRCUIT CONTROL
GP GROUND POINT I,-
5ii; ,I
- -‘7 -.- ‘---
-. - - -’ - - ‘- -’ -
p;T”‘: -
24is-l
- n IGNITION FINAL THERM0 ELEMENTS
g, ..!
STAGE fflGHT
; J
1
4
ZK II ZK I
O-
-_
I y
OISTRIBUTOR LEFT
1
ii;;1 s
1:I
,I--
f
al-
‘1
a
21,
Q
c
I :iL y;;;?,
-==lTntII
7
al
1
OISTRIBUTOR RIGHT
0
3
T18
$O 0909
_ 4
N31 0.rc.r
k
-
v
II
L
; Es%
>Odd d ZD
-.- 3
tA
J--l
I
s .1-m- -”
“’
bl-
,
4
.
SPEED SENDER
;:+.ar”
I I
?I--
STARTER
IL
WA
l--’
m
I I I
. II ^ ,
WL L
,j+i 1: 1: 1 : 150 II
-------
.I.
35OEK
0 lb Ff l
GP Ill
4 -1 II’ I
I I’
,
-- - - ------_
t
1
TRANSMISSION PROTECTION SWITCH I
I
I I I I II -
II II I----
II_m
/
WL 1 I
.M
Jd-1 1 / /
/ & / j
WL 15
$2 i:~;‘;..~, 1
LH-CONTROL UNIT
..’
TEMPOSTAT
._-
:
SWITCH
ee
I : o,,, 0.75REfwT
> J d IL
._
/ 14 +j*:05BK 11 i $ 9 _-
.-
Eh s \E c F
’
. . .B.
_-_- _-_-_
.
;--p
Ill.- 1
=-rI 4-y I,WI, 075l?uWT -
II
075WVWT -I=
-
’
,
CONTROL UNIT
CRUISE CONTROL
j-j-b,“l 0.5Irn
I111‘:j 11& !
hl- I I I 1 I-“5 075csi/Bc .-
I
AC
‘I> _
I
. IL
I I I I II I I I I
I I
I IL
I I I I I/II
-
i 058R
.-
.-
X
-
gvs - -4
69 % .s
.-
Lx._;
-- --
m’
Yi
CLUTCH SWITCI
(M&811 1
IL..:“.:‘.: 1 11ILYFJ
l- -L- m
’ i
-I 1 --‘--U1.’
nn,nrr ’
KICKUOWN LH-JETRDNIC XXV STARTER V
OKIUUC
I 30
EZK * *
L-- J .-_ I
XXII XXVI n
I
(MZL91
3, FUEL PUrP
I
THROTTLE VAwLVE SWITCH
-1&‘&‘&l 1-1
iti’
I
I i
II I
I I I ’ I-
-
I
-.
I II
! I -.
:
I .-
1
ORIVE I L”-L1p’ ’ GP V CENTRAL ELECTRICS IINTANK)
_;_-I FUEL PUMPS LHO FL 1
81
-
82
-
83
-
34
-
85
-
86
-
87
-
88
-
89
-
90
A B C cl E F G H J K
BK = BLACK
-- --- WT = WHITE RE=REO EN = GREEN YE = YELLOW GR = GREY BR = BROWN El = BLUE Vl
q VIOLET PK = PINK
Printed in Germany- XXVI,1990
97-387