coolant temperature MITSUBISHI 3000GT 1992 2.G Workshop Manual

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 <A/T>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 44CONFIGURATION DIAGRAMS - Engine Compartment
Connector
symbol
A
35
thru
79
<Turbo> A 6gA-70
36FOOl4
A-72A-71A-67
:
A-64 --+py>
A-77\ \
A-49
A-50
NOTE*t: Up to 1995 models*2: From 1996 models
A-35
A-36
A-37
A-38
A-39
A-40
A-41
A-43
A-44
A-45
A-46
Dual pressure switchAir conditioning relay box
Air conditioning relay box
SRS front impact sensor (LH)
Front combination light (LH)
Inspection light switch
Headlight (LO, HI)
Fog light (LH)
Pop-up motor (LH)
Condenser fan motor
Condenser fan motor
TSB RevisionA 47
HornA
48HornA 49
HornA 50
Horn
A-51Fuel pump resistor <Turbo>
A-52AIT fluid temperature sensor
A-53
Kickdown servo switch <AIT>
A-54Pulse generator CA/T>
A-55Radiator fan motor
A-56Engine coolant level sensor
A-57Active aero front venturi skirt
I
,
‘d ,
,
I
k&i
I1
I

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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Downloaded from www.Manualslib.com manuals search engine 48CONFIGURATION DIAGRAMS - Ennine and Transaxle <A/T>
ENGINE AND TRANSAXLE <A/T>
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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Downloaded from www.Manualslib.com manuals search engine CONFIGURATION DIAGRAMS - Dash Panel51
C-32c-33
A36F0179
00004255
C-25
C-26
C-27
C-28c-29
c-30
c-31
C-32c-33
Air conditioning control unit
<Manual air conditioning>
Air conditioning control
unit*2
<Manual air conditioning>
Air-inlet sensor <Full-auto air conditioning>
Air selection damper control motor
Body wiring harness (LH) and control wiring
harness combination
Body wiring harness (LH) and control wiring
harness combination
Body wiring harness (LH) and front wiring
harness combination
Body wiring harness (RH) and front wiring
harness combination
Body wiring harness (RH) and front wiring
harness combinationc-34
c-35
C-36c-37
C-38c-39c-40
c-41
C-42c-43
C-44c-45Body wiring harness (LH) and body wiring
harness (RH) combination
Foot light (RH)Body wiring harness (RH) and control wiring
harness combination
Auto-cruise control unit
Blower motor
Blower motor relay (HI)
Air conditioning compressor lock controllerAir-inlet sensor
<Manual air conditioning>*2
Air-therm0 sensor
Engine coolant temperature sensorMFI relay
Over drive and power
/ economy switch
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Downloaded from www.Manualslib.com manuals search engine 88CIRCUIT DIAGRAMS - MFI Circuit <NON TURBO>
MFI CIRCUIT (1992 MODEL) <NON TURBO> (CONTINUED)
J/B
(MULTI-PURPOSEFUSE@>
w
0.85R-B11.25R-W
WITHWITHOUTiXJ$XJc;?UISE&J$~~~~UISE
2
&I ;:iH dOFF - 0~G-W
cA(c-62) r
0.85GL
G-W
t
G
R-G
(c-52)R-G
IGHTKi-
3B-I
1DEDICATED
FUSE
-I
s(c-69)
1J/BB-I
IXEGERg;fK;TIC CLUTCH
--I
i
I,
i
G-Y
e(A-36)
G
1
DIODE
E-31
G
1’9 (c-29)
24
(L-0
(c-29)
(L-0
L/AIR CONDITIONING
POWER TRANSISTORENGINE COOLANT
TEMPERATURE SWITCH
AIR~;~~;$~ONING
UNITHR05MOOCA
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Downloaded from www.Manualslib.com manuals search engine 100CIRCUIT DIAGRAMS - MFI Circuit <NON TURBO>
MFI CIRCUIT (1993 MODELS) <NON TURBO> (CONTINUED)
d
J/B
(MULTI-PURPOSEFUSE@>$fi&IGHT
A
0.85R-BY-T-1.25R-W
CLUTCH
3B-RDEDICATED
FUSEG-Y
J/B
B-R
1
DIODE
E-31
,
G
I
-
it,G
R-G,, 19 (c-29)
(c-52)R-G 24c___-----_-_~_____-_____________________~~~---~~~~~~~~~~~~~~-~~~-~--~~
30
22_---------__
(F)L-R
3ti
----23
(F)(F>B-W
BR-R
(c-29)
(L-0
i
(F>hI(F)B-L
7
\*/AIR CONDITIONING
ENGINE COOLANT
IGNITION POWER TRANSISTORTEMPERATURE SWITCH
AIR
@@DRONING
UNIT
HR05MO 1C.A
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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 <California - Non Turbo, Turbo>Z
EGR temperature sensor
<California - Non Turbo, Turbo>
Engine control module
Engine coolant temperature sensor
Evaporative emission purge solenoid
Fuel pressure solenoid
<Turbo>
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 <Turbo>W
Throttle position sensor (With built-in closed throttleCposition switch)
Turbocharger waste gate solenoid <Turbo>U
Variable induction control motor (DC motor) (withJbuilt-in induction control valve position sensor)
<Non Turbo>
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 - Cooling Circuit185
<From 1994 models>
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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