wiring MITSUBISHI 3000GT 1994 2.G Workshop Manual

Downloaded from www.Manualslib.com manuals search engine GENERAL - Junction Block19
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To roofwiring -harness
Front
/ITo frontwiring harness
- TO instrument panel
wiring harness
Theft-
alarm
horn
relay
L ,.c !!II {+J . ,i/11
\oi
Z16FO304
Back
To bodywiringharness
W-9
Z16FOO5800002704
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id
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Downloaded from www.Manualslib.com manuals search engine GENERAL - How to Diagnose27
HOW TO DIAGNOSE
L;The most important point in troubleshooting is to determine “Probable Causes”. Once the probable causes
are determined, parts to be checked can be limited to those associated with such probable causes. Thereforeunnecessary checks can be eliminated. The determination of the probable causes must be based
ona theory and be supported by facts and must not be based on intuition only.
TROUBLESHOOTING STEPSIf an attempt is made to solve a problem without going through correct steps for troubleshooting, the
problem symptoms could become more complicated, resulting in failure to determine the causes correctly
and making incorrect repairs. The four steps below should be followed in troubleshooting.
I i
,;zirvation of Problem Symp-Determination of Probable
CausesI
Observe the symptom carefully.
Check if there are also other problems.
In determining the probable causes, it is necessary to check
the wiring diagram to understand the circuit as a system.
Knowledge of switches, relays and other parts is necessary
for accurate determination. The causes of similar problems
in the past must be taken into account.
After the problems are corrected, be sure to check that
the system operates correctly. Also, check that new prob-
lems have not been caused by the repair.
INFORMATION FOR DIAGNOSIS
Troubleshooting is carriedout by making step by step
is found. Always go through
what check is to be made where
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This manual contains the cable diagrams as well as the individual circuit drawings, operational explanations,
and troubleshooting hints for each component required to facilitate the task of troubleshooting. The information
is compiled in the following manner:
(1) Cable diagrams show the connector positions, etc., on the actual vehicle as well as the harness path.(2) Circuit drawings show the configuration of the circuit with all switches in their normal positions.
(3) Operational explanations include. circuit drawings of voltage flow when the switch is operated and
how the component operates in reaction.
(4) Troubleshooting hints include numerous examples of problems which might occur, traced backwardin a common-sense manner to the origin of the trouble.
Problems whose origins may not be found in this manner are pursued through the various system
circuits.
NOTE
Components of MFI, ETACS, ECS, etc. with ECU do not include 3 and 4 above. For this information,
refer to a manual which includes details of these components.
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Downloaded from www.Manualslib.com manuals search engine iGENERAL
- How to Diagnose31
Normal close (NC) type
Deenergized stateEnergized state
Current does not flow
Z1680235
State of fuse blown due to overcurrent
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I21680237
State of fuse blown due to thermal fatigue
Z1660236When a normal close type relay as illustrated here is
checked, there should be continuity between terminals
(1) and (2) and between terminals 3 and 4 when the relay
is deenergized, and the continuity should be lost betweenterminals 3 and 4 when the battery voltage is applied
to the terminals
1 and 2. A relay can be checked in this
manner and it cannot be determined if a relay is okay
or faulty by checking its state only when it is deenergized
(or energized),
CHECKING FUSESA blade type fuse has test taps provided to allow checking
of the fuse itself without removing it from the fuse block. Thefuse is okay if the test light comes on when its one lead is
connected to the test taps (one at a time) and the other lead
is grounded. (Change the ignition switch position adequatelyso that the fuse circuit becomes live.)
CAUTIONS IN EVENT OF BLOWN FUSE
When a fuse is blown, there are two probable causes as follows:One is that it is blown due to flow of current exceeding its
rating.The other is that it is blown due to repeated on/off current
flowing through it. Which of the two causes is responsible
can be easily determined by visual check as described below.(1) Fuse blown due to current exceeding rating
The illustration shows the state of a fuse blown due to
this cause. In this case, do not replace the fuse with a
new one hastily since a current heavy enough to blow
the fuse has flowed through it. First, check the circuit
for shorting and check for abnormal electric parts. Only
after the correction of such shorting or parts, fuse of the
same capacity should be used as a replacement. Never
use a fuse of larger capacity than the one that has blown.
If such a fuse is used, electric parts or wirings could be
damaged before the fuse blows in the event an overcurrent
occurs again.(2) Fuse blown due to repeated current on/off
The illustration shows the state of a fuse blown due to
repeated current on/off. Normally, this type of problem
occurs after fairly long period of use and hence is less
frequent than the above type. In this case, you may simplyreplace with a new fuse of the same capacity.
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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 36CONFIGURATION DIAGRAMS - Overall Configuration Diagram
OVERALL CONFIGURATION DIAGRAM
<HAT1
Roof wiring
CHBACK>Instrument panel
wiring harness
- ,;
/Front wiring“l,
Door wiring*harness
harness
.-----y ,,\.Body wiring
harness (LH)Y36FOO19
<CONVERTIBLE>
Body wiring
harness (RH)Roof wiring
Instrument panel
wiring harness
Control wiring/harness
Door wiring*
harness
/Z36FO124Front wiring‘x\..e----qT .\, ’ Body\Niring00002733
harness‘-*harness (LH)
NOTE
(1)This illustration shows only the major wiring harness.
(2)* indicates also equipped at the right side.
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Downloaded from www.Manualslib.com manuals search engine CONFIGURATION DIAGRAMS - How to Read Configuration Diagram37
,lHOW TO READ CONFIGURATION DIAGRAM
id<The wiring harness diagrams clearly show the connector locations and harness routings at each site on
actual vehicles.
L
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 <Turbo>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 CONFIGURATION DIAGRAMS - Engine Compartment
<Turbo>
A-69A-70
\ \
36FOO14
A-35
A-36
A-37
A-38
A-39
A-40
A-41
A-42
A-43
A-44A-72 A-71A-67+
A-5
A-57 A-55A-54 A-53 A-52 A-51A-47A-48
A-49
A-50
Dual pressure switchAir conditioning relay box
Air conditioning relay box
SW front impact sensor (LH)
Front combination light (LH)inspection light switch
Headlight (LH)Front wiring harness and headlight wiring
harness (LH) combination
Fog light (LH)
POWJO motor (LH)A-45
A-46
A-47
A-48
A-49
A-50
A-51
A-52
A-53
A-54
A-55
Condenser fan motor
Condenser fan motor
Horn
Horn
Horn
Horn
Fuel pump resistor <Turbo>
A/T fluid temperature sensor
Kickdown servo switch GAIT>
Pulse generator <A/T>
Radiator fan motor
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Downloaded from www.Manualslib.com manuals search engine CONFIGURATION DIAGRAMS - Engine CompartmentENGINE
HOOD
A-73
\
/I IIA-46 A-45 A-44
A-43A-42
A-56
A-57A-58
A-59
A-60
A-61A-62
A-63
A-64
A-65
Engine coolant level sensorActive aero front venturi skirt
Fog light (RH)
Pop-up motor (RH)
Front wiring harness and headlight wiring
harness (RH) combination
Headlight (RH)
Front combination light (RH)
SRS front impact sensor (RH)
ABS hydraulic unit
ABS hydraulic unit
A-66Hood switch
A-67
Front wiring harness and control wiring harness
combination
A-66
Diode (for ABS circuit)
A-69
Resistor <Turbo>
A-70
Turbocharger waste gate solenoid <Turbo>
A-71
Fuel pressure solenoid <Turbo>
A-72
Control wiring harness and solenoid valve
harness combination
A-73
Inspection light
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Downloaded from www.Manualslib.com manuals search engine CONFIGURATION DIAGRAMS - Engine Compartment45
; !i i\1 ._’ !\\-7’I \ ‘\
A-58
A-61A-62A-63A-64A-65A-66A-67A-66
A-46A-45A-43 A-76
Fog light (RH)
Headlight (LO, RH)
Front combination light (RH)
SRS front impact sensor (RH)
ABS hydraulic unit
ABS hydraulic unit
Hood switch
Front wiring harness and control wiring harness
combinationDiode (for ABS
circuit)*’
ENGINE HOOD
A-73A-69A-70
A-71A-72A-73A-76A-77A-78
A-79
Resistor <Turbo>
Turbocharger waste gate solenoid <Turbo>
Fuel pressure solenoid <Turbo>
Control wiring harness and solenoid valve
harness combination
Inspection light
Headlight (Hi, LH)
Headlight (HI, RH)
No connection
<Turbo>
Motor antenna control unit cConvertible>*1 or
motor antenna
4onvertible>*2
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Downloaded from www.Manualslib.com manuals search engine 46CONFIGURATION DIAGRAMS - Engine and Transaxle <M/T>
ENGINE AND TRANSAXLE <M/T>:
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 <Turbo>
A36F0176
B-01
B-02
B-03
B-04
B-05
B-06
B-07
B-08
B-09
i*B-25 <Non-turbo>
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)
<Non-Turbo>
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)
<Non-Turbo>
Injector No. 5
Injector No. 3
Injector No. 1
Ignition coil
Capacitor
Left bank heated oxygen sensor (front)
<Turbo, Non Turbo
- 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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