1993 MITSUBISHI 3000GT TRANS

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i Service Manual
3000~l-
1992-l 996
Volume
2
Electrical
FOREWORD
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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’FORTVOLUNTARY TECHNICIAN
CERTiFiCATlON THROUGH
National lnaltute forAUTOMOTIV ESERVICEEXCELLENC E
Mitsubishi Motors Corporation reserves the right to make changesin design or to make additions to or improvements in its products withou\
timposing any obligations upon itself to install them on its productspreviously manufactured.
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GROUP / SECTION INDEX
General. . . . . . . . . . . . . . . . . . . . . . . .
Fusible Link, Fuse an d IOD or
Storage Connector Locatio n
. . . . . . . . . .w
Inspection Terminal Location . . . . . . . . .
Grounding Location . . . . . . . . . . . . . . . . . .w
m
Relay Location . . . . . . . . . . . . . . . . . . . . . -m
Sensor Locatio
n. . . . . . . . . . . . . -. . . . . . .w
Control Unit Location . . . . . . . . . . . . . . . . .m
Solenoid, Solenoid Valve Location . . . . .d
Diode Location . . . . . . . . . . . . . . -. . . . . . .w
Junction Block . . . . . . . . . . . . . . . . . . . . . . .II
Centralized Junction . . . . . . . . . #. . . . . . .w
Harness Connector Inspectio n. 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 CorporationReprinted in USA

Downloaded from www.Manualslib.com manuals search engine GENERAL - Sensor Location9SENSOR
LOCATION
NameSymbol
Name
Symbol
ABS front speed sensorYKickdown servo switchM
ABS rear speed sensorZ
Knock sensorE
Air inlet sensor (for A/C)SLeft bank heated oxygen sensorD
Air therm0 sensor (for A/C)RManifold differential pressure sensor*4CAutomatic transaxle oil temperature sensor M
4lT>Photo sensor
TCamshaft
posit!on sensor and crankshaft N. . .Power steering pressure switchFposrtton sensor” I
Camshaft position sensor (from 1993 model)GPulse generator A, B M
Crankshaft position sensor (from 1993 model)HRevolution pick-up sensorI
EGR temperature sensor*3CcTurbo, Non Turbo (for California)>Right bank heated oxygen sensorD
Engine coolant temperature sensor (for A/C)QSteering wheel angle speed sensor0
Engine coolant temperature sensorL(for engine control)Therm0 sensor*2
K
Engine coolant temperature switch (for
A/C)*2LThermostatI
Front impact sensorIx1 Throttle position sensorIJ 1
G sensor (for ABS)PJ( Vehicle speed sensor (Reed switch)*’Ip I
G sensor(for ECS)*31 Vehicle speed sensorIB 1
Heated oxygen sensor*”ID( Volume air flow sensortA 1/III
Interior temperature sensorIw II I
NOIF
I:;
:
*2:
Up to 1992 models(3)
*3:
Up to 1993 models(4)
*a:
Up to 1995 models
From 1996 models
19FO13400004237
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Downloaded from www.Manualslib.com manuals search engine 32GENERAL - How to Diaanose
CHECKING CABLES AND WIRES1. Check connections for looseness, rust and stains.
2.Check terminals and wires for corrosion by battery electro-
lyte, etc.
3.Check terminals and wires for open circuit or impending
open circuit.4. Check wire insulation and coating for damage, cracks
and degrading.
5.Check conductive parts of terminals for contact with other
metallic parts (vehicle body and other parts).6. Check grounding parts to verify that there is complete
continuity between attaching bolt(s) and vehicle body.7. Check for incorrect wiring.
8.Check that wirings are so clamped as to prevent contact
with sharp corners of the vehicle body, etc. or hot parts(exhaust manifold, pipe, etc.).
9.Check that wirings are clamped firmly to secure enough
clearance from the fan pulley, fan belt and other rotating
or moving parts.
10. Check that the wirings between the fixed parts such as
the vehicle body and the vibrating parts such as the engine
are made with adequate allowance for vibrations.
HANDLING ON-VEHICLE BATTERY
When checking or servicing does not require power from the
on-vehicle battery, be sure to disconnect the cable from thebattery
(-) terminal. This is to prevent problems that could
be caused by a short circuit. Disconnect the (-) terminal first
and reconnect it last.
Caution1. Before connecting or disconnecting the negative
cable, be sure to turn off the ignition switch and the
lighting switch.
(If this is not done, there is the possibility of semicon-
ductor parts being damaged.)
2.After completion of the work steps [when the battery’s
negative (-)
terminal is connected], warm up the engineand allow it to idle for approximately five minutes
under the conditions described below, in order to sta-
bilize the engine control conditions, and then checkto be sure that the idling is satisfactory.
Engine coolant temperature:
85-95°C (185-203°F)
Lights, electric fans, accessories: OFF
Transaxle: neutral position
(A/T models: “N” or “P”)
Steering wheel: neutral (center) position
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Downloaded from www.Manualslib.com manuals search engine CONFIGURATION
DIAGRAMSCONTENTS
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Dash Panel................................50Instrument Panel and Floor Console..........54Engine and Transaxle
CA/T>.................48Interior.....................................56
.................46
Luggage Compartment......................58
Engine Compartment........................38Overall Configuration Diagram...............36
How to Read Configuration Diagram.........37

Downloaded from www.Manualslib.com manuals search engine CONFIGURATION DIAGRAMS - How to Read Configuration Diagram37
,lHOW TO READ CONFIGURATION DIAGRAM
id actual vehicles.
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Denotes connector No.The same connector No. is used throughout the circuit dia-
grams to facilitate connector location searches. The first al-
phabetical symbol indicates the location site of the connector
and a number that follows in the unique number. Numbers areassigned to parts in clockwise order on the diagram.
Examole: A-l 2
/Number specific to connector (serial number)
Connector location site symbol
A: Engine compartment
B: Engine and transaxle
C: Dash panel
D: Instrument panel and floor consoleE: Interior
F: Luggage compartment
Denotes ground point.Same ground number is used throughout cir-cuit diagrams to facilitate search of ground
point. Refer to P.4 for details of ground points.
A-01X
A-02X
A-03X
A-04X
A-05X
A-06X
A-07X
A-08X
A-09X
A AL\,
$~~~;~.--.-.*/hhA, ”
L^---,.-I II-m 1 lta>.I
J
n-1°KA-11X
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ueriotes a sermon covereaby a corrugated tube.236F0122
A-01X Headlight relayA-18A-02X ABS power relayA-l 9ignition timing adjustment connector
Front washer motorA-03X Fog light relayA-20
A-04XRadiator fan motor relay(L0)A-21Evaporative emission purge solenoid
EGR solenoidA-05X Taillight relay
A-06X Horn relay
A-22(Vehicles for California)
A-07X Radiator fan motor relay (HI)EGR temperature sensor
A-09X Starter relayA-23(Vehicles for California)
No connection A-l OX Generator relayA-24Brake fluid level sensorA-11XIOD or Storage connectorA-25
A-12ABS front speed sensor (RH)A-26ECS front shock absorber (LH)
Theft-alarm horn
A-13Theft-alarm horn
A-14ECS front shock absorber (RH)A-27
Washer fluid level sensorA-28
Auto-cruise vacuum pump
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Downloaded from www.Manualslib.com manuals search engine 46CONFIGURATION DIAGRAMS - Engine and Transaxle
ENGINE AND TRANSAXLE :
Connector
symbol
B
Front View
B-0: B;lO 53-11B-12R-i?
IB-06 B-07 B-08B-40*’
B-02
------+
B-01B-30
\ 7
I
B-29
- \B-:4B-23
B-25
A36F0176
B-01
B-02
B-03
B-04
B-05
B-06
B-07
B-08
B-09
i*B-25
NOTE
[:I*‘A992 models*2: From 1993 models*s:1994, 1995 models for California and from 1996 models*4: From 1996 models
Engine coolant temperature gauge unit
Engine coolant temperature sensor
Engine coolant temperature switch(for air conditioning circuit)
Crankshaft position sensor and camshaftposition
sensor*’Throttle position sensor
Control wiring harness and oil pressure wiring
harness combination
Control wiring harness and injector wiring
harness combination
Knock sensor
Variable induction servo motor
(with intake control valve position sensor)

B-10
B-11
B-12
B-13
B-14
B-15
B-16
B-17
B-18
B-19
B-20
B-21
B-22
Variable induction servo motor(with intake control valve position sensor)

Injector No. 5
Injector No. 3
Injector No. 1
Ignition coil
Capacitor
Left bank heated oxygen sensor (front)
- 1994, 1995 models for
California and 1996 models>
Generator
GeneratorRight bank heated oxygen sensor (front)
Magnetic clutch
Power Transistor
Power TransistorL)
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Downloaded from www.Manualslib.com manuals search engine B-23
B-24
B-25
B-28
B-29
B-30
B-31
B-32
B-33
Rear View
B-46*4
B-32
B-33
A36F0167
Starter motor
Starter motor
Back-up light switchFuel pump relay
Volume air flow sensor (with intake air
temperature sensor and atmospheric sensor)
Control wiring harness and battery cable
combination
Injector No. 2
Injector No. 4
Injector No. 6
B-34
B-35
B-36
B-37
B-38
B-40
B-41
B-44
B-45B-46
Speed sensor
Idle air control motor (stepper motor)
Oil pressure gauge unit
Oil pressure switch
Power steering pressure switch
Camshaft position
sensor*2
Crankshaft position sensor*2Right bank heated oxygen sensor
(rear)*3Left bank heated oxygen sensor
(rear)*3Manifold differential pressure
sensor*4
CONFIGURATION DIAGRAMS - Engine and Transaxle 47
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Downloaded from www.Manualslib.com manuals search engine 48CONFIGURATION DIAGRAMS - Ennine and Transaxle
ENGINE AND TRANSAXLE
Front View
By ‘-[ i”i 7741e2
B-06 B-07 B-06 *\ I I /A /
B-05\ \IB-30
-
B-04*’B-03
-
B-02B-01
-
B-29
*B-24A36F0176
/ m \ i-42*2
B-20I
1IB-27 B-26*’ B-26*2 B-43*2
NOTE
[:I 1:: zif ~$$‘~ode~s
(3) l ?1994, 1995 models for California and from 1996 models
(4)
*4:From 1996 models
B-01
B-02
B-03
B-04
B-05
B-06
B-07
B-08
B-09
Engine coolant temperature gauge unit
Engine coolant temperature sensor
Air conditioning engine coolant temperature switch
Crankshaft position sensor and camshaftposition
sensor*’
Throttle position sensor
Control wiring harness and oil pressure wiring
harness combinationControl wiring harness and injector wiring
harness combination
Knock sensor
Variable induction servo motor(with intake control valve position sensor)
B-10
B-11
B-12
B-13
B-14
B-15
B-16
B-17
B-l 8
B-l 9
B-20
B-21
Variable induction servo motor
(with intake control valve position sensor)
Injector No. 5
Injector No. 3
Injector No. 1
Ignition coil
CapacitorLeft bank heated oxygen sensor
(front)*3
Generator
Generator
Right bank heated oxygen sensor (front)
Magnetic clutch
Power transistor
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