switch MITSUBISHI 3000GT 1995 2.G Repair Manual

Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit
COMPONENT LOCATIONUp to 1993 models and 1994, 1995 models Non Turbo (Federal)
NameSymbol
Air conditioning relay0
Air conditioning switch
Camshaft position sensor
a
Check engine/malfunction indicator lampP
Crankshaft position sensorD
Data link connectorR
EGR solenoid Z
EGR temperature sensor

Engine control module
Engine coolant temperature sensor
Evaporative emission purge solenoid
Fuel pressure solenoid

Heated oxygen sensorE
idle air control motor (stepper motor)L
Name/ Symbol
Ignition coil (ignition power transistor)
Ignition timing adjusting terminal
Injector
(1
Multrport fuel rnjectron (MFI) relay
ParWNeutral position switch c&T>
Power steering pressure switchH
Resistor W
Throttle position sensor (With built-in closed throttleCposition switch)
Turbocharger waste gate solenoid U
Variable induction control motor (DC motor) (withJbuilt-in induction control valve position sensor)

Vehicle speed sensorFIVolume air flow sensor (with built-in intake air A
temperature sensor and barometric pressure sensor)
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit165
-x- --q-Y7FU1003
Volume &flo~‘.&&sor(with built-in intake air
temperature sensor and
barometric pressure sensor)
temperature sensor
Pbuilt-in
I
closed throttle
position switch)
IP--l IHeated oxygensensor
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit
- l”“, , IVolume air flow sensor”’.(with built-in intake air
temperature sensor and
barometric pressure sensor)
-I
Y---l
0
3.
\Y%=S-\
P
,
Vehiclespeed
sensor
IW12FOO5C
I
)-

Vehicle speed sensor
(reed switch)
I lim.-;l”iII’Ar;;{di6onin$&
--
(qqTjar=-? p q
s
I) ‘!yyj;jZ T j+
T
I
L-I-p-e ‘-___ _ A~- -
-----m--~~,
-r-
i
i\ 1 ~~~~+~~y7Fu,o~6
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Downloaded from www.Manualslib.com manuals search engine 176CIRCUIT DIAGRAMS - Cooling Circuit
COOLING CIRCUIT (UP TO 1993 MODELS)
‘LJ\
IGNITIONIGNITSWITCH(IG2)SWITCINIGl)FUSIBLE LINK@
2R-B
2R-B
28-h2L-B
7
b
“t
'""I, L-RI + 0.85B-W
T
tL-RI
2L-GL-R2L-GL-R0.85B-W
5,l,,511
(A-04X)I\fi RADIATOR A59 (D-04)7T
-------&!EA?oToR-------
;,ON\I (LO) (HI).OFF-:flN\/ _L
43I43
L-Bh28
G-BL-Y
JOFF-
2L-Y
2L-YG-B
01
I
L-B
L-BG-B
,36/ZPI
(D-45)7
L-Y
2
d
ENGINE
1 d
1
?
COOLANT
LEVEL SENSOR
OFF -0; (A-56)
iBRESISTOR
L
RADIATOR FAN ASSEMBLY(A-55)
2E
2E
6
HRO-SMOOAA
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Downloaded from www.Manualslib.com manuals search engine 178CIRCUIT DIAGRAMS - Cooling Circuit
COOLING CIRCUIT (1994, 1995 MODELS)
(FEDERAL)
FUSIB ELINK 5bIGNI:SWIT(3N(IG2)IGNITIONSWITCH(IG1)
B-W
2.-_______--____
2R-B
,FULL AUTO A/C
2R-B.MANUAL A/CA
2L-E
(c-82)
(c-69)
METER AND GAUGES
TURN-SIGNAL
LIGHT AND
HAZARD LIGHT
L-F
(A-04X)
L-I
I'
(A-07X)
3
,2 (C-31)25 (D-45)
L-Y 7G-B..2
(A-56),\ENGINE
ENNTOFF '?ON- SENSOR
R 1
2L-GL-k
1,,5
I
RADIATOR;;EA~OTOR-------___
(LO)(HI) OFF-:iJN
3
'4
2BG-E
x----~~~----~~~~-~-------
G-B
‘TrIN
1
i
2B
L-E
1
L-EG-l
11---
2L-Y
-
VEHICLE
!%kAND %i%R
pW#IATOR :
ASSEMBLY :(RESISTOR) .
r(A-55):G-Y
ELC-4A/TI53___- __-- ------166------------@--.&J(C-53)
2B
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - Cooling Circuit179
IGNITIONFUSIB ESWITCH(IG2) LINK 5k
L-
r---
/2L-I
IIc
L---.
L
G-BDEDICATED
FUSE
DUAL~$~PX~~REAIR CONDITIONING
COMPRESSOR LOCK
CONTROLLER
I
G-
,/1G-II-------
G-
,,l2L-w 5/\2L-w 5\,\\CONDENSERA
-------;;FAvOTOR-------
\/@OFF(HI) (LO) OFF-,?"3'4 (A-31X)(A-34X) “L
I'iL
A
IN
1 2L-I
2L-I
4.---__4
(G-0)I
I7
NOCONNECTION28
I‘---7(A-36)
2Ba
(A-33X) (A-34X) (A-36)@im (A-45) (A-46)
IIIIIIII/IIIIIII/III
I
III/IIIIII
I
IIIIIII3/-----____I
HROGMOlAB
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - Cooling Circuit181
idJ
IGNITIONFUSIB Eb
DUALAIR CONDITIONING
SWITCH(IG2) LINK 5l';~'~;RECOMPRESSOR LOCK
CONTROLLER
BA
L-R2R-BG-O(G-0)
1100r----+*------52---------------1I/I2L-Y/G-OII/II1L--------&----------------------I
/ 2L-RI
63%ELCATED
20AIIIII2L-wG-O
1G-B
1,:&--,(A-36)111II
1
Iw[CONDENSER,FAN MOTOR
M
I
NC!
2LCONNECTION2B
c----------t/,-i22
2L-B2B
0
2BI'
---7HROGM02AB
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Downloaded from www.Manualslib.com manuals search engine 182CIRCUIT DIAGRAMS - Cooling Circuit
COOLING CIRCUIT (FROM 1996 MODELS)
2L-B
(C-82)J/B
@
i10A(c-69)
IGNITIONIGNITIONSWITCH(IG2)SWITCH(IG1)
---pqF-JNG
1
2R-B2R-BI+.MANUAL A/C'FULL-AUTO
AIR CONDITIONING
01METER AND GAUGES
L-l
I
(A-07X)
TURN-SIGNAL
LIGHT AND
HAZARD LIGHT
L-R
2L-GL-fr-b---
5
(A-04X)
I
?
1
1
I k---------
2L-G
L-R
,,51RADIATOR/\
Kk!A!oToR---------_
(LO)(HI) PFF-..b
I4
2BG-B
11G-B__---____----------_------IN
i
1
2E
L-E
Gj~~~~~ G-B
(A-56)
G-BJ
L-EG-E
112L-Y
Bll
ENGINE
COOLANT
~~/;;~A'""" VEHICLEMETER AND @;RGAUGES
Y-W
EL&4A/T 1
201 86---_--------_-1 92-----
2EHROGMOBAA
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Downloaded from www.Manualslib.com manuals search engine 184CIRCUIT DIAGRAMS - Cooling Circuit

TROUBLESHOOTING HINTS1. Neither the radiator fan nor condenser
fan rotate at all.l Check fusible link No. 5
2. Only the condenser fan does not
operate.l Check dedicated fuse No. 8.
3. The radiator fan and condenser fan do
not operate in the low speed mode, but
operate otherwise.(1) The
AK compressor magnet clutch does
not enter the “ON” state.
lCheck whether the output of the auto
compressor control unit is available.
NOTE
For troubleshooting of the air conditioningcontrol unit, refer to GROUP 55.
(2) The A/C compressor magnet clutch enters
the “ON” state.l Check the resistor.
lCheck the radiator fan motor relay (LO)
and condenser fan motor relay (LO).l
Check the therm0 sensor (for radiator
fan).
(3) The radiator fan does not rotate when the
air conditioning switch is turned ON.l Check the radiator fan motor control
relay.4. The radiator fan and condenser fan do
not operate in the high speed mode, but
operate otherwise.l Check the
therm0 sensor (for condenser
fan).l
Check the radiator fan motor relay (HI) and
condenser fan motor relay (HI).Fan Operating Mode
ant temperature
switch (for air
conditioning
cut-Radiator fan mo-
3°C(239 f 5°F) orover, ON at 108°C
OFFONLOW
LOW
ON
ONHIGHHIGH
ON
OFFHIGH
LOW
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - Cooling Circuit185

OPERATIONThe engine control module controls the power
transistors (high speed and low speed) in the moduleto provide radiator fan motor and condenser fan
motor rotation controls in accordance with the engine
coolant temperature and vehicle speed.
NOTEIn the event of faulty water temperature sensor,
the engine control module commands the fan motors
(for both radiator and condenser) to rotate at high
speeds.1. Radiator Fan (Low Speed Rotation)
l
When the engine control module turns onthe power transistor (low speed) in the
module, the current flows from the ignition
switch to the engine control module throughthe radiator fan motor relay (LO) coil.
If the current flows to the fan motor relay
coil, the switch of the relay turns on to supplythe motor driving power (for low speed
rotation). This will cause the current to flow
from the battery to the ground through the
radiator fan motor, relay switch and resistor,rotating the radiator fan at low speeds.
2. Condenser Fan (Low Speed Rotation)
l
The power from the NC compressor lock
controller turns on the condenser fan motorrelay (LO) to rotate the condenser fan at
low speeds.3. Radiator Fan, Condenser Fan (High
Speed Rotation)l
When the engine control module turns onthe power transistor (high speed) in the
module. the radiator fan motor relay (HI)
and condenser fan motor relay (HI) will
operate and the motor driving power (for
high speed rotation) is sent to the radiator
fan motor and condenser fan motor to rotate
the radiator fan and condenser fan at high
speeds.
TROUBLESHOOTING HINTS1. Neither the radiator fan nor condenser
fan rotate at all.
l Check fusible link No. 5.
2. Only the condenser fan does not
operate.l Check dedicated fuse No. 8.
3. The condenser fan do not operate in the
low speed mode, but operate otherwise.
(1) The A/C compressor magnet clutch does
not enter the “ON” state.l Check whether the output of the air
conditioning compressor lock controller
unit is available.
(2) The A/C compressor magnet clutch enters
the “ON” state.l
Check the condenser fan motor relay
(LO)-4. The radiator fan and condenser fan do
not operate in the high speed mode, but
operate otherwise.l Check the engine control unit.
Fan Operating Mode
VehicleA/C compressor lockspeedcontroller output
k%
80 or less[50 or less]
LO
(OV)
80 or more[50 or more]HI (12V)
,_ -
Engine coolanttemperature
$1
Approx. 95 [203] or less
Approx. 95
[203] or more
Approx. 105
[221] or more
Approx. 105
[221] or less
Approx. 105
[221] or more
Approx. 105
[221] or less
Approx. 105
12211 or moreTransistor
Transistor
in enginein engineRadiatorCondensercontrol unitcontrol unitfanfan
Low speedHigh speed
OFF
OFFOFFOFF
ONOFFLow speedOFF
ON
ONHigh speedHigh speed
OFF
OFFOFFOFF
ONONHigh speedHigh speed
ON
OFFLow speedLow speed
ON
ONHigh speedHigh speed
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