Porsche 928 GT - 1991 WIRE DIAGRAM Quick start guide

Wiring

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

ii-

21- 30

31- 40

41-

51-

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

individual wiring diagrams,

sheet construction components

and

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

25 to module element.

Printed in Germany-XXVI, 1990

YZ8

Model.

Sheet1

LIGHTSROWOUTSIDE

B C 0 E

___-

SIDE TURN SIGNAL RIGHT LIGHT SWITCH HAZARD LIGHT SWITCH

! iigg+~~

_-_---_-- --_-.-

: 10

Tag

n .x nc ,“C

,, I i

I, I,

IW /-

HEADLIGHT TURN SIGNAL/OIMMER SWITCH

.---.-y--I

ASSEMBLY RIGHT

POTENTIOMETER

GP V r,

m 0.5WEL dl I

ALE0 HEADLIGHT

7.-

. . . -.-.-.

.-.-.v. _-.-.-.

I- IIIIIII

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

2’

J j,,

I” I I,, I

10 WT/EK .a, I Ll

5- 3-

011A - I

31 aa] -

0112

I I I

K-

,,I-, 1

II-

I I

I II III Ill I II

I I

XXIII-XwdIV

n.,, Y .a.,, n

“IYL I I”ILL*Y

:ENTRAL ELECTRICS L-

I I

MP III MP xl \ ” ,MP V

GP I

MP II

MP v, 0 CONNECTING DOINT

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

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

TURN SIGNALS

BACKUP LIGHT

SWITCHIM4811

'WL16

SIOE MARKER LIGHT

& 1 TAIL LI&;FT

TURN SIGNAL/OIMMER SWITCH

AI 151I’

III1 I

2 0 BK/WT/5N

H f I I I 1 1 lgl 1

I ’

I 0.75 WWT

I I I

- I I I? I 1 r-t

Y =

_ 2 ,;s G6 >

.-.-.B.1 .( .-.-.I.-.

NYYI

,OfJKlWT

..-.-.-.-.-.-.m.-.

z -

-1 /

- ,-

I-

T 1 LJ LJ I I

I 1 I (

- N13

r 525

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

0 75 (An3

LIGHT COMBINATION

ONLY MZ49

I I L -

-_---.------- _--

:b.Tdu;.~--

-.-.-.-.-.-.B.B.-.-.-.-.-.-.-.-.

.w.-.-.B.B.B. j

STOP LIGHTS

, - -

M Tll

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

Model

Sheet

LIGHTSUSA OUTSIDE

A B C cl E F G H J K

SIOE MARKER

LIGHT RIGHT LIGHT SWITCH HAZARD LIGHT SWITCH -

11 Q

1 .I

.’

4,;:

7 Id

/I:

:h :..

:”

II +tf

; Iji

:.,

I++ I..

;, 12

‘_I

TURNSIGNAL/UIMMER SWITCH

Jol

TITURHBNUS

$ $=3=

Low&AM

STOP LIGHT SWITCH POTENTIOMETER ::

FOG LIGHT SWITCH FOR INSTRUMENT LIGHT

Cm-

‘v ’ ;F;;ALEO HEAOLIGHT

CONCEALEO HEAOLIGHT

MOTOR

I -2r-l

-1

1 25- I I

I -1 I

I I I I I

I II II I I IIi,d i

c22.J

I I

L _.A .

I I Cl‘,

0122

I CZlj

CONCEALED HEADLIGHT

- I r-7 us,

1 tall;

I I 11 s-

1 02lJ

I 011:

I L

, ,?I, I

I n co1

GP I

II :

I/ . I

31 GROUND

! !!

L.-.

4!!?slb

70””

‘:;,.‘i,i

--.-.-

3 10WTm

GPV ,f’

;!3 I

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

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

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

; I#2491 STARTER LOCKOUT

AND BACKUP LAMP SWITCH

TURN SIGNAL/IlIMMER SWITCH

JOI

----

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

-’

LIGHT III L-‘--.--- _--A.-- 1

-.-.~.~.~.I.~.-.~.-.~.~.-.

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

Model

Sheet

BODY B c 0 E F G H J K

HE:AOLlGHT WASHING WINO! iLD WASHING

FLUID PUMP FL1110 MP

f~‘\~

-in

MOTOR SUN POWER WINOOW REGULATOR

ROOF MOTOR ORIVER’S SIDE PUSH BUTTON SWITCH

IM6501 FOR POWER WINOOW

: .,

ORIVER

T-T!

“‘“““,,“r’~;,

1.w ;:;ym

II I

L: _, ::

*“T N

d’

--L

2;:: z

2 P

W.36

2 2 000

NNN

SWITCH

INTENSIVE CLEANING

5’

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

GP V

I I I I I

POTENTIOMETER FOR

WIPING/WASHING

I I I

JI‘ 1 I I I I I I

023J

III

05YE

H53

-I

1 IIX

WINDS1

-lIELO WIPER MOTOR 021 .

an3

I I L 024;1 1

L-

115:.

L25A

WIPE /WASH SWITCH

-_--

I.5 WBl L -

22.

0 5 ERNT

05ewWT na

izg !,, *-

.r”“.-”

1.3MlY” .

^ , 1.5WERl2Ll.J

‘“;;-al I:,!,,

*cm

,u.

KC. I

I I,,-

1 I I I

,, ,:~~.$#-py

1nAN/A

.._ -.- .-

ID&--

._.

i'll II'

0.5 WT w5,

\\I/,, I wn w

1 GP II 20 BnM or33

-! I

TWO-TONE HORNS XVI

1 1

iI....Mmi

-_-,

I I

-A m---I

2% WIPER INTERMITTENT Xl AOOITIONAL CLEANING HEADLIGHT CLEANERS Vl

CONTROL FLUID PUMP IX

0 1.0m

I I

J 31 IGROUNDI

CENTRAL ELECTRICS I I

30 I

.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-I- -B.-.-m-.-.- .-.-.-

TWO-TONE HORN TWO-TONE HORN

B C D E F G

J K

Printed in Germany- XXVI,1990

BK = BLACK

WT =

WHlTE RE

REO GN = GREEN YE = YELLOW Ge : GREY

BR q

BROWN

97-373

BLUE VI = VlOLET

Wiring

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

PUSH BUTTON SWITCH

FOR POWER WINDOW

ORIVER

!: .I

:’ ”

ti: N

“7-l

L21

ma0

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

-.~.~.~.~.~.~.~.-.~.~.~.-.-.-.-.-.-.-.-.-.-. 4-

REAR WINOOW

WIPER RELAY

31 IGROUNDI

/ REAR WINOOW

WIPER MOTOR

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

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

REO GN =GREEN YE

YELLOW GR = GREY ER

BROWN EL

BLUE Vl.VlOLET PK = PlvK

Wiring Dingram 97-373

Y28

Model.

Sheet

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

2-i

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

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. 31

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 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

BK = ELAM WT

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

F G H J K L M N 0 P I

SWITCH ODOMETER

SWITCH ODOMETER RESETTING MS53

RESETTING ROW 0

ATOR SWITCH

;E FLU10

CONNEC TING POINT

0 CONNEC TION WITH FIELD OATA

GP GROUND POINT

TOOTHEO BELT

TENSION SWITCH SEAT BELT

zle?ejtwz l- .-.-.-.-.-.-.-.-

mblmmmyI

dddadd

. CENTRAL ELECTRICS

aatr*+ P I

::MRL4S8 -

RELAY SOCKET OMIY FOR LHO

TIMING RELAY IM2 15M5531

1 m

ls$l OIL LEVEL SWITCH

. ..#

COOLANT TEMP

SENDER

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

COOLANT

a LEVEL SWITCH

/T23--. v

“‘r C3NNECTION NO 121

DIAGNOSIS

’ FUEL LEVEL

SENDER COOLANT

F G H J K L M N 0 P

BLACK WT = WHITE RE = RED GN = GREEN YE

YELLOW

GR q

GREY BR = BROWN BL = BLUE VI = VIOLET PK=PIM(

Wiring Oingram 97-375

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