Mitsubishi 3000GT User manual

i
Service Manual
3000~l-
1992-l 996
Volume
2
Electrical
FOREWORD
i
L
This Service Manual has been prepared with the
latest service information available at the time of
publication. It is subdivided into various group
categories and each section contains diagnossis,
disassembly, repair, and installation procedures
along with complete specifications and tightening
references. Use of this manual will aid in properly
performing any servicing necessary to maintain or
restore the high levels of performance and reliability
designed into these outstanding vehicles.
@
A
.
.,
WESUF’FORT
VOLUNTARY TECHNICIAN
CERTiFiCATlON
THROUGH
National lnaltute for
AUTOMOTIVE
SERVICE
EXCELLENCE
Mitsubishi Motors Corporation reserves the right to make changes
in design or to make additions to or improvements in its products without
imposing any obligations upon itself to install them on its products
previously manufactured.
L
--
GROUP / SECTION INDEX
General . . . . . . . . . . . . . . . . . . . . . . . .
Fusible Link, Fuse and IOD or
Storage Connector Location
. . . . . . . . . .
w
Inspection Terminal Location . . . . . . . . .
Grounding Location . . . . . . . . . . . . . . . . . .
w
m
Relay Location . . . . . . . . . . . . . . . . . . . . .
-
m
Sensor Location
. . . . . . . . . . . . . -. . . . . . .
w
Control Unit Location . . . . . . . . . . . . . . . . .
m
Solenoid, Solenoid Valve Location . . . . .
d
Diode
Location . . . . . . . . . . . . . . -. . . . . . .
w
Junction Block . . . . . . . . . . . . . . . . . . . . . . .
II
Centralized
Junction . . . . . . . . . #. . . . . . .
w
Harness Connector Inspection
. I . . . . . .
w
How to Diagnose . . . . . . . . . . . . . -. . . . . . .
111
Configuration Diagrams . . . . . . . . . . . - . .
m;
Circuit Diagrams
. . . ..*.............
Engine Electrical
...............
ChassisElectrical
.............
Alphabetical Index
.............
NOTE:
For information concerning all compo-
nents other than the electrical system and
on-vehicle service procedures for engines
and transmissions, refer to Volume 1
“Chassis & Body” of this paired Service
Manual.
For overhaul procedures of engines or
transmission, refer to the separately is-
sued Engine Service Manual or Manual/
Automatic Transmission Service Manual.
@ 1995 Mitsubishi Motors Corporation
Reprinted in USA

2
GENERAL - Fusible Link, Fuse and IOD or Storage Connector Location
FUSIBLE LINK, FUSE AND IOD OR STORAGE CONNECTOR LOCATION
Name
1 Symbol 1
Name
1 Symbol 1
Dedicated fuse No. 1 to No. 7
Dedicated fuse No. 8 and No. 9
B Fusible link
A
C IOD or Storage connector
B
Dedicated fuse No. 10
E Multi-purpose fuse
D
\ I
\ \216~0265
216F0260
z19Fo134
00002606
1 TSB Revision
1 ’ fuse
\\
Y16FO246

GENERAL
- Inspection Terminal Location
3
INSPECTION TERMINAL LOCATION
I
I
Name
Symbol Name
I
Symbol
Data link connector <From 1994 models>
I
C
Fuel pump check connector A
Data link connector <Up to 1993 models>
B
Ignition timing adjustment connector
A
Engine speed detection connector
A
m
'0257
Y19FO134
00002697
A
P
tz-+v
A--+%
l,&
Ai-
\6
~:~~~~p::~“eotor 32
m-1
I- 1
abjustment -
connector
f ,
From 1994 models
\
Y16FC498
TSB Revision

GENERAL - Groundina Location
GROUNDING LOCATION
216FO267
NOTE
Same ground numbers are used in the circuit diagram.
q
Z
-
\
F
w
-.-mt-, -
m
---
i’
~
T=
1 A8 )&
’ fi
I
\
Xl 9FO134
1 TSB Revision

..__-
GENERAL - Grounding Location
I \\ 1
crossmember
216FO258
c
TSB Revision

6
GENERAL - Relay Location
RELAY LOCATION
Name
Symbol
Name
Symbol
-ABS power relay*’
/A
1 MFI relay
TJ
Auto-cruise control relay
Blower motor relay
Blower motor relay (Hl)*5
I
Motor relay (ABS hydraulic unit)
B
E
Pop-up motor relay*3
A
K Power window relay F
Condenser fan motor relay (HI)
Condenser fan motor relay (LO)
Defogger relay
Door lock power relay 1
D
Radiator fan motor control relay*3
D
D
Radiator fan motor relay (HI)
A
F
Radiator fan motor relay (LO)
A
F
Rear intermittent wiper relav L
Door lock power relay 2 l 2
Fog light relay
Fuel pump relay
Generator relay
L
Starter relay
A
ATail light relay A
C
Theft-alarm horn relay*4 E
A
Theft-alarm starter relay*4 H
Headlight relay ATurn-signal and hazard flasher unit
Horn relay
A
Valve relay (ABS hydraulic unit)
Magnetic clutch relay
D
NOTE
-
(1)
*l: Vehicles produced up to Oct. 1993.
I:;
l 2: Except 1993 and earlier models without keyless entry system.
*3: Up to 1993 models
(4)
*4: Vehicles with theft-alarm system.
(5)
l s: Except vehicles with manual air conditioning from 1996 models.
G
B
00002699
TSB Revision

GENERAL - Relay Location
4~ to 1993 models> 4
P
:
<Up to 1995 models>
I
Z16FOOO8
L-7
\
\ .
%
I
\_
H?ic\
-
Y
Theft-z2 5:\
starter relay
--
Z16FO282
TSB Revision

GENERAL
- Relay Location
control
relay
v
X16FO396
EA 169s models> L
?I -
p!
Rear intermittent
“i ”
(1: i
I/ il
‘jH$iy
I ‘1
&@IId---~::~~~ \ i (j ” (
I
II:
I. II
-Cd
\.\
' . ‘yliFO264
TSB Revision

GENERAL - Sensor Location
9
SENSOR LOCATION
Name
Symbol Name Symbol
ABS front speed sensor
YKickdown
servo switch
M
ABS rear speed sensor
ZKnock sensor
E
Air inlet sensor (for A/C)
S
Left bank heated oxygen sensor
D
Air therm0 sensor (for A/C)
R
Manifold differential pressure sensor*4
C
Automatic transaxle oil temperature sensor M
4lT>
Photo sensor T
Camshaft posit!on sensor and crankshaft N
. . .
Power steering pressure switch
F
posrtton sensor” I
Camshaft position sensor (from 1993 model)
G
Pulse generator A, B <A/T>
M
Crankshaft position sensor (from 1993 model)
H
Revolution pick-up sensor
I
EGR temperature sensor*3
C
cTurbo, Non Turbo (for California)>
Right bank heated oxygen sensor
D
Engine coolant temperature sensor (for A/C) Q
Steering wheel angle speed sensor
0
Engine coolant temperature sensor
L
(for engine control) Therm0
sensor*2 K
Engine coolant temperature switch (for A/C)*2 L
Thermostat
I
Front impact sensor
Ix
1 Throttle position sensor
IJ 1
G sensor (for ABS)
PJ
( Vehicle speed sensor (Reed switch)*’
Ip I
G sensor(for ECS)*3
1 Vehicle speed sensor
IB 1
Heated oxygen sensor*”
ID
( Volume air flow sensor
tA 1
/I
I
I
Interior temperature sensor
Iw I
I I
NOIF
I:;
:
*2:
Up to 1992 models
(3) *3:
Up to 1993 models
(4) *a:
Up to 1995 models
From 1996 models
19FO134
00004237
TSB Revision

GENERAL - Sensor Location
00002701
Volume air flow sensor
<Turbo, Non
Turbo (for California)>
Y7FUlOlO
pressure sensor
AOSFOOM

GENERAL - Sensor Location
o> - 1994,1995 models for Federal
<From 1993 models>
CUD to
1993 models>
r- m
0
.: \I0w
Revolution pick-up sens’or
\u
/c, fd
I
Throttle position
sensor
(with built-in
closed throttle
position switch)
and from 1966 models
<DOHC>
‘-I I I
built-in closed
) ) 1
\ \l/ / \ \v
/
~~1026
1 TSB Revision

12
GENERAL - Sensor Location
<Up to 1993 models>
I
> servo switch
L
I I f$3&FZX ‘AI 6F0063
Steering wheel
angle speed sensor
Y12FOO72
<Up to 1992 models>
Vehicle speed sensor
1
Y66FOO12
ZWFOO47
I
216FO26-3
TSB Revision

GENERAL - Sensor Location
-
216FOO51
Interior temperature
sensor
4
Qs
1 TSB Revision

14
GENERAL - Control Unit Location
CONTROL UNIT LOCATION
Name
Symbol
ABS control unit
J
Active exhaust control module cup to 1994
H
models>
Air conditioning compressor lock controller
C
Air conditioning control unit
B
Name
Engine control module
ETACS control unit
Keyless entry control unit
Light automatic shut-off unit
Motor antenna control unit
SRS diagnosis unit
Sunroof control unit
Symbol
d
B
A
F
19FO134
16FO267
00004239
control module
TSB Revision

GENERAL - Control Unit Location
I
’ ~ ‘X1‘6FOPtM
A16FO568
<Vehicles without keyless entry
svstem>
I’
Z16FO281
Electronic d&trbl
1 suspension
I
control unit
’ K
--J
-q== r’--?
IFi&
\\ I\ 216F;)OO6
1 TSB Revision

16
GENERAL - Solenoid, Solenoid Valve Location
SOLENOID, SOLENOID VALVE LOCATION
to 1995 models for California
TS’B Revision

GENERAL - Diode Location
17
DIODE LOCATION
Name
Diode (ABS circuit) <Up to 1995 models>
Diode (MFI circuit)
Diode (Seat belt warning circuit)
Symbol Name Symbol
A
Diode (Theft-alarm circuit)
C
B
Diode (4WS fluid level warning light circuit)
D
C
Diode (ABS circuit)
,
’ i’16FOO24
I \
T19F0134
00002703
/
f
(MFI c?uit)
Y16FO251
236FOO16
1 TSB Revision

18 GENERAL - Junction Block
JUNCTION BLOCK
ULTI-
K""
ccc-74)
K(C-80)
J(C-78)
pTiRz$q
ACC-68) F(C-82) B(C-69)
q
EL!
*
Remarks
(1) Alphabets assigned to the connectors are keyed
to those assigned to connectors on P.19
(2) Terminals of the harness side connector are indicated
in parentheses ( ).
H(C-76)
E(C-83)
pTisq
HROOMOOAA
TSB Revision