Power transistor MITSUBISHI 3000GT 1994 2.G User Guide

Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit
MFI CIRCUIT (1993 MODELS) (CONTINUED)
GERACTIVE
CONTRO--
R-W
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3B-R
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0.85G
G
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DIODEE-31 Y
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102 (c-54)
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----
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a(c-14)
#T
(c-61)
G-B
ABS~{ClfROL
YIGNITION POWER TRANSISTOR
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Downloaded from www.Manualslib.com manuals search engine 114CIRCUIT DIAGRAMS - MFI Circuit
MFI CIRCUIT (1994 MODELS) (CONTINUED)
ij~
J/B
tMULTI-PURPOSEFUSE@i;;iiLyIGHTKi77- -
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IGNITION POWER TRANSISTOR
(HI) (LO)
RADIATOR
FAN MOTOR
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HR05M02DA
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Downloaded from www.Manualslib.com manuals search engine 138CIRCUIT DIAGRAMS - MFI Circuit
MFI CIRCUIT (1995 MODELS) (CALIFORNIA) (CONTINUED)
J/BMULTI-PURPOSE
REAR WINDOW
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19 (c-29)
ENGINEG
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11 (c-29)
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IGNITION POWER TRANSISTOR
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i-R
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mm (c-62)
HR05M04DA
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Downloaded from www.Manualslib.com manuals search engine 146CIRCUIT DIAGRAMS - MFI Circuit
MFI CIRCUIT (1995 MODELS) (CONTINUED)
J/B
tMULTI-PURPOSEFUSE@i'T$TkkIGHTDEFOGGERn-r n-9KELHY
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1 L-R
L-----
(L-0)
-----20
IG-Y
7-----
LB
RADIATOR
FAN MOTOR
RELAY
(HI) (LO)
59(c-52)
:c-90)
c(L-C3)I
1L--7
CL-(3)
\IR ':ONDITIONING:ONTROL UNIT
7(A-67)
c
(A-36)
G-Y
i!L”fREI
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6
Ia(F)B-I
---__-.------.O23
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11
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58 (c-so)
W
METER AND
GAUGES
NOTE:l:Hatcnoack:2:ConvertiDleETIC
L
1:"IGNITION POWER TRANSISTOR
HROBMO8DA
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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 Circuit
,
Vehiclespeed
sensor
IW12FOOSC
(DC motor) (with built-in inductioncontrol valve position sensor)_I/, ./X7FI lOAI-Injector
I\,-\ Y7FUO803I
(rgnition powertransistor)
Y7FUO648
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit169
i
L
iJ
1994, 1995 models except Non Turbo (Federal) and from 1996 models

Evaporative emission purge solenoid
Fuel pressure solenoid
Heated oxygen sensor
Idle air control motor (stepper motor)
Ignition coil (ignition power transistor)
XTurbocharger waste gate solenoid
V
Variable induction control motor (DC motor) (with
Ebuilt-in induction control valve position sensor)
LVehicle speed sensor
MVolume air flow sensor (with built-in intake airtemperature sensor and barometric pressure sensor)Symbol
Q
K
T
E
Y
N
I
H
W
E
C
U
J
F
A
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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
1 TSB Revision1

Downloaded from www.Manualslib.com manuals search engine 188CIRCUIT DIAGRAMS - EL(=-4 A/T Circuit
ELC-4 A/T CIRCUIT (1992 MODEL) (CONTINUED)
MGB6 EbAIR CONDITIONINGA/T FLUID
COMPRESSOR LOCK
CONTROLLER$$/g;;ATURE
I
--_-----_-
ENGINE CONTROL MODULE 1
I (cooL)(HOT)I45W-B1
G-RI1
G-‘
_-----
i
3o,(c-52:
7
(c-
I ! L-WWW-R II\3 (c-29)
drIOD OR0(G-RSTORAGECONNECTOR m^
I08E
(DOHC-Non-Turbo>
6--------- -_______818
(Y-W)
BR-C
4Y-W
Y-W
I
6m
10
I
SPEED
SENSOR
(@%*)
.I
1
‘iOFF- ON
------_
(P:
)P-------
P
)
IGNITION
POWER
TRANSISTOR;;;XbERATOR(Y-R)
SWITCH
(c-13)
AUTO-CRUISE =CONTROL UNITH
:A LINKJNECTOR-
HR07MOOBA
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Downloaded from www.Manualslib.com manuals search engine 192CIRCUIT DIAGRAMS - ELC-4 A/T Circuit
ELC-4 W CIRCUIT (1993 MODELS) (CONTINUED)
EYWKB6 E(4ENGINE CONTROL MODULEI4
7
(c-54
W-L
I7------.
116
(c-53)
W-R
181,-------_-----
5W-Bi
m-
---1
I
23L
3
4
1
G-
3------
i254
G-R
\/
IOD OR0(G-RSTORAGE
(c-52:
L-W
‘4L_-----------------------
Y
-r
1
____-_-------40W(Y-W)Y-W
I
6m
Y-WIGNITION
POWERTRANSISTOR
;46
I’
(c-47)(c-46)
(Y-R'T
-_----11
4
BR-1r
17_-----_3(P:
2P__-----
P
\TA LINtINNECTOISWITCH
(B-42)
(Y-R
HR07MO IBA
1 TSB Revision