fuse MITSUBISHI 3000GT 1995 2.G Workshop Manual

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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’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.
L
--
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 2GENERAL - Fusible Link, Fuse and IOD or Storage Connector Location
FUSIBLE LINK, FUSE AND IOD OR STORAGE CONNECTOR LOCATION
Name1 Symbol 1 Name1 Symbol 1
Dedicated fuse No. 1 to No. 7
IOD or Storage connector B
Dedicated fuse No. 10
\I\ \Ž~0265
216F0260
z19Fo13400002606
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1’ fuse\\Y16FO246

Downloaded from www.Manualslib.com manuals search engine GENERAL - Centralized JunctionCENTRALIZED
JUNCTION
FUSIBLE LINK (Relay box in engine compartment)
I INo.Housing colorRated capacityIA)
1Generator circuitWine red
120
2Pop-up motor circuit(Upto1993
models)
Pink
30
3Lighting circuitGreen
40
4
Ignition switch circuitPink
30
5Radiator fan motor and condenser fan motor circuitGreen
40
6Junction block (Multipurpose fuse (l), (6), (14), (16), (17), (19))Green
40
7ABS circuitYellow
60
8Top stack circuit <Convertible>
Pink
30
9Power window circuitPink
30
10Defogger circuit
Green
40
11Active aero circuit <Hatchback>Pink
301I
116FO256
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DEDICATED FUSE
GENERAL - Centralized Junction21
Power supply circuitNo.Rated capacity
(A)Housing color
Circuit
Battery
,!. I/
120YellowMFI circuit
Tailliaht relavI2 1151 Blue1 Tailliaht circuitI
Fusible link (6)
Fusible link (3)
Headlight relay
Battery
310RedHorn circuit
415RedFog light circuit
510RedUpper beam circuit
610RedHazardlightcircuit
7*’10RedABS circuit
7*220Yellow
Sunroof circuit
Fusible link (6)
a20
910
Defogger relay10 10
NOTE*l: Vehicles produced up to Oct. 1993.
*2: Vehicles with sunroof
Yellow
Red
RedCondenser fan motor circuit
Air conditioning circuit
Remote controlled mirror heater circuit
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<Relay box in engine compartment>1
216FO256
<Air conditioning relay box
in engine compartment><Interior relay box>
Up to 1993 models From 1994 models
Z16FOOO2Z16FOOO3Z16FO43100002705
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Downloaded from www.Manualslib.com manuals search engine 22GENERAL - Centralized Junction
MULTI-PURPOSE FUSE (In junction block)
Power supply circuitNo.Rated capacity (A)
Battery
Ignition
switch
10
Battery
Ignition switch IG21 7I 10
18 I-
Ignition
switch
BatteryACC 9
I I15
Battery14 10
BatteryI 13016
I 11517Ignition switch
IGl I 18 ( 10
NOTE
(l)*‘: Vehicles produced up to Oct. 1993.
(2)*2: From 1994 models.
(3)*3: Up to 1995 models.
Multi-purpose
fuse
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Downloaded from www.Manualslib.com manuals search engine GENERAL - How to Diagnose
Changeover k&bZ1680224
Z1680225
INSPECTION1. Visual and aural checks
Check relay operation, blower motor rotation, light illumina-d
tion, etc. visually or aurally. The flow of current is invisiblebut can be checked by the operation of the parts.
2. Simple checks
For example, if a headlight does not come on and a faultyfuse or poor grounding is suspected, replace the fuse
with a new one or ground the light to the body by a jumper
wire to determine which part is responsible for the problem.3. Checking with instruments
Use an appropriate instrument in an adequate range andread the indication correctly. You must have sufficient
knowledge and experience to handle instruments correctly.
INSPECTION INSTRUMENTS
In inspection, make use of the following instruments.1. Test lights
A test light consists of a 12 V bulb and lead wires. It
is used to check voltages or short circuits.
2. Self-power test light
A self-power test light consists of a bulb, battery and lead
wires connected in series. It is used to check continuity
or grounding.
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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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iGENERAL
- How to Diagnose33
Power supply
Fuse
’ i
ON (2),----c//ISwitch
I
Motor
Z16AO260
GENERAL ELECTRICAL SYSTEM CHECKSA circuit consists of the power supply, switch, relay, load
ground, etc. There are various methods to check a
circui;
including an overall check, voltage check, short circuit checkand continuity check. Each of these methods is briefly de-
scribed in the following.
1. VOLTAGE CHECK
(1) Ground one lead wire of the test light. If a voltmeter
is used instead of the test light, ground the groundingside lead wire.
(2) Connect the other lead wire of the test light to the
power side terminal of the switch connector. The test
light should come on or the voltmeter should indicate
a voltage.
(3) Then, connect the test light or voltmeter to the motor
connector. The test light should not come on, or the
voltmeter should indicate no voltage. When the switch
is turned on in this state, the test light should come
on, or the voltmeter should indicate a voltage, with
motor starting to run.(4) The circuit illustrated here is normal but if there is
any problem such as the motor failing to run, check
voltages beginning at the connector nearest to themotor until the faulty part is identified.
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Downloaded from www.Manualslib.com manuals search engine GENERAL - How to Diagnose2. SHORT-CIRCUITS CHECK
A blown fuse indicates that a circuit is shorted. The circuit responsible can be determined by the
following procedures.Remove the blown fuse and connect a test light in its place
(Switch is in the OFF position)
Test light comes on
+
NO
1 Short circuit between fuse block and switch (A)Turn on the switch
(Test light comes on but the illumination light does not come on)ItDisconnect the illumination light connector
I+Test light remains on
iNO
Short circuit between the illumination light connector and illumina-tion liaht ((3
Short circuit between the switch and illumination
light connector (B)A
Power supply
(Remove the fuse.)
1OFF
gi
location
Switch
a
Illuminationfight
16.4om2
BPower supply
Fuse block(Remove
the fuse.)
* Disconnect the load
iii
Illumination
light
T16Aom
13. CONTINUITY CHECK
Self powertest light
(or ohmmeter)
Z16AO269
C
Power supply
Test
lightFuse block
(Remove the fuse.)
Switch
Disconnect the load
ii
Short-circuit- location
Illumination
light
16Alncd?00000741
(1) When the switch is in the OFF position, the self powertest light should come on or the ohmmeter should
read 0 ohm only when the terminals 1 and 2 are inter-
connected.
(2) When the switch is in the ON position, the self powertest light should come on or the ohmmeter should
read 0 ohm only when the terminals 3 and 4 are inter-
connected.
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Downloaded from www.Manualslib.com manuals search engine 62CIRCUIT DIAGRAMS - How to Read Circuit Diagrams
HOW TO READ CIRCUIT DIAGRAMS
The circuit of each system from the fuse (or fusible link) to ground is shown. The power supply is shown3at the top and the ground at the bottom to facilitate understanding of how the current flows.~
Indicates connector No. The same No. asin the wiring harness diagram is used. Con-
nector numbers enclosed by frame are indi-cated with the connector symbols at the
lower part of the page. Connector numbers
not enclosed by frame are indicated without
connector symbol.connected. The arrow indi-cates the current flow direction.cates the current flow direction.1 [ connected. r arrow indi- [Indicates the circuit name to be
Indicates harness junction point
No. for another system. It corre-Indicates the circuit name to be
Indicates the powersupply in theB
control unit. If no voltage is dis-played, this indicates battery
positive voltage.
An
“X” at the end of a connector
No. indicates that the connectoris connected to a centralized
junction that is shown in the sec-tion “Centralized Junction”.t
Indicates the operating condi-GC
Indicates the connector symbol.
are indicated in numerical order.1
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