1995 MITSUBISHI 3000GT ignition coil

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 16-4ENGINE ELECTRICAL - Charging System
(FROM 1994 MODELS)CIRCUIT DIAGRAM
(F)8W-:F>IW-F
\
1
1-8
COIL
-
i
~
i
-
(Ir
METER AND
GAUGES
-
3 Eb3-
B-\
(c-01
B-\
J
gfF;E$ATOR r
(A-1OX)
I
nr
D r
hJ
s-77
3
ILJL
_)
tc
(F>
----- -------.
3
ILTAGE YEGULATOS
L
;
:
(
L
2B-W7(c-82)
J/B,\
0715A
\,0.85
6(c-71)
B-W
--COMBINATION@ METER
z7TURN-SIGNAL
?LIGHT ANDHAZARD LIGHT
GENEARATOR
IGNITIONSWITCH(IG1)
I2B-WI
(Flo (D-45) DEFOGGER
HR04MOlAA
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Charging System16-5
OPERATION
When engine is stoppedWhen the ignition switch is switched to the “ON”
position, electricity flows from the
‘I” terminal of
the generator to the field coil, and at the same time
the charging warning light illuminates.
When engine is being started/has started
When the engine is started, charging voltage is ap-
plied to the ‘I” terminal of the generator, with the
result that the charging warning light is extinguished.
In addition, because battery voltage is applied to
the “S” terminal of the generator, this battery voltage
is monitored at the
IC voltage regulator, thus switch-ing ON and OFF the current to the field coil and
thereby controlling the output voltage of the genera-
tor.
Power is supplied to each load from the “B” terminal
of the generator.
NOTE
The generator relay functions as a back-up for the
flow of electricity to the field coil if there is a discon-
nection or damaged wiring of the charging warning
light.
COMPONENT LOCATION
Name/ Symbol 1
1 Generator relayI A I
TROUBLESHOOTING HINTS1. Charging warning light does not go on when
the ignition switch is turned to “ON”, before the
engine starts.l Check the bulb.
2.Charging warning light fails to go off once the
engine starts.l
Check the IC voltage regulator (located with-
in the generator).
3. Discharged or overcharged battery.l
Check the IC voltage regulator (located with-
in the generator).4. The charging warning light illuminates dimly.
l Check the diode (within the combination
meter) for a short-circuit.
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Starting System16-23
OPERATION
L
0For models equipped with the M/T, the clutch
pedal position switch contact is switched OFF
when the clutch pedal is depressed; when the
ignition switch is then switched to the “ST’ posi-tion, electricity flows to the starter relay and
the starter motor, the contact (magnetic switch)of the starter is switched ON and the starter
motor is activated.
NOTEIf the ignition switch is switched to the “ST
position without the clutch pedal being de-
pressed, electricity flows to the starter relay
(coil), the clutch pedal position switch (contacts)
and to ground, with the result that the contacts
of the starter relay are switched OFF, and, be-
cause the power to the starter motor is thereby
interrupted, the starter motor is not activated.lFor models equipped with the
AIT, when the
ignition switch is switched to the “ST’ position
while the selector lever is at the “P” or “N” posi-
tion, the contact (magnetic switch) of the starter
is switched ON and the starter motor is activated.
TROUBLESHOOTING HINTSThe starter motor does not operate at all.
l Check the starter (coil).
lCheck for poor contact at the battery terminals
and starter.l Check Park/Neutral position switch.
l Check clutch pedal position switch.
l Check starter relay.
l Check theft-alarm starter relay.
l Check key reminder switch.
i
/’
L&J
Fieldcoil wire
Iii?Stopper
IPinion gap
PinionZ6EL003
STARTER MOTORREMOVAL AND INSTALLATION
Refer to GROUP 22
- Manual Transaxle, or GROUP 23 -
Automatic Transaxle.INSPECTION
PINION GAP ADJUSTMENT(1) Disconnect field coil wire from M-terminal of magnetic
switch.
(2)Connect a 12 V battery between S-terminal and M-terminal.(3) Set switch to “ON”, and pinion will move out.
Caution
This test must be performed quickly (in less than 10
seconds) to prevent coil from burning.(4) Check pinion to stopper clearance (pinion gap) with a
feeler gauge.
Standard value: 0.5-2.0 mm (.020-,079 in.)
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Downloaded from www.Manualslib.com manuals search engine i/ENGINE ELECTRICAL
- Ignition System
IGNITION SYSTEM
16-31
SPECIFICATIONSGENERAL SPECIFICATIONS
CRANK ANGLE SENSOR cup to 1992 model>
Items
Specifications
TypeContact pointless type
Identification No.
Tl T49371
Part No.MD1 53464
Advance mechanism
Firing orderControlled by engine control unitl-2-3-4-5-6
IGNITION COILrItems
Type
Identification No.SpecificationsMold 3-coil
F-536
L
IPart No.j MD152648I
SPARK PLUG
Items
NGK-Specifications
PFRGJ-11
NIPPON DENS0PK20PRPllSERVICE SPECIFICATIONS
Items
Ignition coilStandard valueLimit
Primary coil resistance at
20°C0.67-0.81(68°F)
RSecondary coil resistance at
11.3-15.3
20°C (68°F) kc2
Spark plug gap mm (in.)1.0-l .l (0.39-0.43)Spark plug cable
kQ
1.3 (.051)
Max. 22SPECIAL
TOOLS
Tool number and nameSupersessionApplication
i
MD998464
Harness connector
(4 pin, square)Check of ignition primaryvoltage
(connection of ignition coil
connector)
i
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - lanition Svstem
TROUBLESHOOTING (UP TO 1993MODELS)CIRCUIT DIAGRAM
IGNITIONhiITCH(IG1)
2B-X
7m
1
J/B
c
015A
(c-71)
2B-Y
(D-44)
2B-W
(D-15)
2B-W
1.25B-W
@%t”DETECTION
CONNECTOR
5
5
(B-14)
1.25L-R,,2
41.25L-B;,l
,,1. 25L-Y;,4I
2B-W23_
y;'$1. 25L-Y
A6 ,P-----,\22-----,,ll(B-22) /\,h,\IGNITION
IGNITIONCOIL1-4COIL2-5-r--
CAPACITOR
(B-15)2B-W
1/IGNITION IPOWERTRANSISTOR!rl
2
4TION
)
(D-15)
3%(TAC
42 5
3 6
”
SPARK PLUG
1.25B
IIIIIIII1IL
“-6% “-6 “-4%4;ig;f;HERIC.IGNITIONSWITCHtST)/ 5vv.(CTP) SWITCH.CRANKSHAFT
.CAMSHAFTPOSITION SEENGINE CONTROL MODULEPOSITION SENSOR';#$;~L;oc.KNOCK SENSOR.VOLUME AIR*ENGINE COOL
FLOW SENSOR;ED&f$AT"RE
:NSOR
IULE:ANT
IGNITION TIMING
ADJUSTMENT CONNECTOR
HR03MOOAA
1 TSB Revision

Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition Svstem
(UP TO 1995 MODELS)CIRCUIT DIAGRAM
IGNITION SWITCH(IG1)
B-W
1CHARGING33-W 70
J/B0
t15A
(c-71)5
2B-Y
2B-W
WEDETECTION
CONNECTOR
\I/1. c5L-R,,2
(F)1.25L-B;,lI'(F>1.25L-Y J,4
(FlPR-W : 3
CAPACITOR
(B-15)(F)2B-W
,x6 ,J3,_12=r------------------ -----,,ll (B-22)
iI -,\ I\,\,\IGNITION' ""TL 1-4IGNITION
COIL 2-5
i
IGNITION
COIL 3-6
1
(F)E_________-----------_----1532'1(8-21)(F)W
101;; (C-54)
r-,58 (c-90) A
1o23-----------ll(c-52)
I/ AAAA
SPARK"PLUG
INPUT SIGNAL
&i&AND
1. 251
!I
~~$yqppQ.INTAKE AIRgE;g;EATUREsiKz&G
'&$AT~~;HER'C
k-_""_---- 52~1. (CTP) SWITCH.CRANKSHAFT
3.CAMSHAFTPOSITION SENSOR
B-G 104g2
I
if;INE CONTROLPOSITION SENSOR*TRANSAXLE
.KNOCK SENSORCONTROL MODULE
2 (A-18)
.VOLUME AIR.ENGINE COOLANT
FLOW SENSOR$~~~~~ATURE
0
NOTEIGNITION TIMING:l:TURBO,NON TURBO (CALIFORNIA)ADJUSTMENT CONNECTORx2:NON TURBO (FEDERAL)
FE) CFm) (B-14) Em3 EFZTJ(B-22)-(c-54)(c-71)
/$J$mb @f-@
ok4 Oh,
( TSB Revision1
HR03MO 1AA

Downloaded from www.Manualslib.com manuals search engine 16-34ENGINE ELECTRICAL - Ignition System
(FROM 1996 MODELS)CIRCUIT DIAGRAM
IGNITION SWITCH(IG1)
B-W
iCHARGINGJ/B
Eiwi"
/DETECTION
(c-73)“5CONNECTOR
2B-Y
(D-44)“5
2B-W-I
2B-W
MFILS - --
(F>B-W(B-14)
(F)l. 25L-R,,2
(F)1.25L-B;,l
(F>1.25L-Yj,4
(F>2B-W ),3-
.
13,<2------ ---__,,11 (8-22),\,\IGNITIONCOIL l-4IGNITION
COIL 2-5IGNITIONCOIL 3-6-4III(r
,cl
(F>2B-W
IGNITION /POWER
TRANSISTOR;
I
(F)'
\I\/,I--------------
-----
-----
I5(F)W321m
BR-RW
(D-15)2
W
METE1GAUGI*AND)3 6
\-I
G9SPARK PLU4
9 41INPUT SIGNAL
*INTAKE AIRg;#j#ATURE
"-b- bkl *ATMOSPHERIC9FLTcno
-SPEED SENSOR.(PNP) SWITCH.-.-..
, 4””
---- 521ENG:h!E CONTROLMODI
TENSOR
ODULE
OLANT
RE
IGNITION TIMING
ADJUSTMENT CONNECTOR
1. 25
HR03M02AA
TSB Revision1