engine oil MITSUBISHI 3000GT 1996 2.G Owner's Guide

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$AT"RE
:NSOR
IULE:ANT
IGNITION TIMING
ADJUSTMENT CONNECTOR
HR03MOOAA
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition Svstem
(UP TO 1995 MODELS)CIRCUIT DIAGRAM
IGNITION SWITCH(IG1)
B-W
1CHARGING33-W 70
J/B0
t15A
(c-71)5
2B-Y
2B-W
WEDETECTION
CONNECTOR
\I/1. c5L-R,,2
(F)1.25L-B;,lI'(F>1.25L-Y J,4
(FlPR-W : 3
CAPACITOR
(B-15)(F)2B-W
,x6 ,J3,_12=r------------------ -----,,ll (B-22)
iI -,\ I\,\,\IGNITION' ""TL 1-4IGNITION
COIL 2-5
i
IGNITION
COIL 3-6
1
(F)E_________-----------_----1532'1(8-21)(F)W
101;; (C-54)
r-,58 (c-90) A
1o23-----------ll(c-52)
I/ AAAA
SPARK"PLUG
INPUT SIGNAL
&i&AND
1. 251
!I
~~$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,
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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
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Downloaded from www.Manualslib.com manuals search engine i;ENGINE ELECTRICAL
- Ignition System16-35
OPERATIONl
Turn ignition switch to .“ON”position, and batteryvoltage will be applied to primary winding of
ignition coil.l
When crankshaft position sensor and camshaft
position sensor signal is input to engine control
module, engine control module makes ON-OFF
control of power transistors one by one.l When power transistor is turned on, current
flows from ignition coil (primary winding) to
ground through power transistor.l When power transistor A is turned from ON
to OFF, the spark plugs of No. 1 and No. 4
cylinders spark. Turning of power transistor B
from ON to OFF will produce sparking in spark
plugs of No. 2 and No. 5 cylinders. Furthermore,
when power transistor C is turned from ON toOFF, sparking is produced in spark plugs of
No. 3 and No. 6 cylinders.
TROUBLESHOOTING HINTS1. Engine cranks, but does not start.
(1) Spark is insufficient or does not occur at
all (on spark plug).l Check ignition coil.
l Check camshaft position sensor and
crankshaft position sensorl Check power transistor.
l Check spark plugs.
l Check spark plug cable.
(2) Spark is good.
l Check ignition timing.
2. Engine idles roughly or stalls.
l Check spark plugs.
l Check ignition timing.
l Check ignition coil.
l Check spark plug cable.
3. Poor acceleration
l Check ignition timing.
l Check spark plug cable.
l Check ignition coil.
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - lanition Svstem16-41
/
L
i
Analyzer
GroundL
01L1008
STANDARD WAVE-FORM
Observation ConditionsIGNITION PRIMARY VOLTAGE WAVE-FORM
CHECK
MEASUREMENT METHOD
(1)Remove the ignition coil connector and connect the special
tool (harness connector: MD998464) in between.
(2) When observing the No. 1 - No. 4 cylinder group, connectthe primary pickup of the analyzer probe to the ignition
coil side connector terminal No. 2 (black clip on the special
tool).
For the No. 2 - No. 5 cylinder group, connect to terminal
No. 1 (red clip), and for the No. 3
- No. 6 cylinder group,connect to terminal No. 4 (white clip).
(3) Ground the primary pickup ground terminal.
(4) Clamp the spark plug cable with the trigger pickup.
NOTE(1) Clamp the spark plug cable of cylinder No. 1, No.
2 or No. 3 which belongs to the same group of the
cylinder to which the primary pickup is connected.
(2) The wave-form of any cylinder in the same group
is displayed on the left side of the screen.
FUNCTION
PRIMARY
PATTERN HEIGHTHIGH (or LOW)
PAVERN SELECTOR
Engine revolutionsRASTER
Curb idle speed
(V)
100
Primary Primary*ignition ignition
voltage voltage
wave-form
owave-formkr
0
Zener
voltage
(Point C)
Dwell
section
b
Spark line (Point A)
/b-4
Wave damping reduction section (Point B)
/
Time
7EL0149
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Wave-form Observation Points/
LPoint A: The height, length and slope of the spark line (refer to abnormal wave-form examples 1, 2, 3and 4) show the following trends.
Spark linePlug gapCondition of CompressionConcentra-Ignition timing High tension
electrodeforcetion of air mix-cable
tureLength Long
SmallNormalLowRichAdvanced
Leak
Short
LargeLarge wearHighLeanRetardedHigh
resistanceHeight High
LargeLarge wearHighLeanRetardedHigh
resistance
LowSmall
NormalLowRichAdvancedLeak
SlopeLargePlug is fouled-
Point B: Number of vibrations in reduction vibration section
(Refer to abnormal wave-form example 5)
Number of vibrationsCoil and condenser
I3 or higher/ Normal
Except aboveAbnormal
Point C: Height of Zener voltage
Height of Zener voltageProbable cause
HigherProblem in Zener diode
LowerAbnormal resistance in pri-
mary coil circuit
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition System
EXAMPLES OF ABNORMAL WAVE-FORMS
Abnormal wave-form
Wave characteristics
Cause of problem
Example 1Spark line is high and short.
Spark plug gap is too large.
z01P0210
Example 2Spark line is low and long, and is
sloping. Also, the second half of
Spark plug gap is too small.the spark line is distorted. This
could be a result of misfiring.3
i
Example 3
zo1Po211
Spark line is low and long, and is
sloping. However, there is almostSpark plug gap is fouled.
no spark line distortion.
ZOlPO212
Example 4Spark line is high and short.Spark plug cable is nearly falling
off. (Causing a dual ignition)
ZOlPO213
Example 5No waves in wave damping set-tion.Rare short in ignition coil.
-l
zolPo214
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition System16-45 l
IGNITION SYSTEM
LREMOVAL AND INSTALLATIONI
i
27EN0520
413 NmIlOft.lbs.
d
12 Nm
9 ft.lbs.
22 Nm16ftAbs.B678
W1
,A4
Removal stepsl Intake manifold plenum (Refer to
GROUP
1.5 - Intake Manifold.)1. Center cover
2. Spark plug cable
3. Spark plug
4. Ignition coil
5. Ignition power transistor
6. Crankshaft position sensor
cl 992 models>9 Nm
7
ft.lbs.u 16FO453
00662527
7. O-ring cl992 models>
8. Clamp Camshaft position sensor, Crankshaft
positionsensor removal steps models>l Timing belt cover (Refer to GROUP
11 - Timing Belt)
9. Camshaft position sensor
10. Crankshaft position sensor
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Downloaded from www.Manualslib.com manuals search engine 16-48ENGINE ELECTRICAL - lanition Svstem
\/27EL0086
/DEL0087INSPECTION
SPARK PLUGCheck the plug gap and replace if the limit is exceeded.
Standard value:
1.0-l .l mm (.039-.043 in.)
Limit: 1.3 mm
(.051 in.)
Caution
1.Do not attempt to adjust the gap of the platinum plug.
2.Cleaning of the platinum plug may damage the plati-num tip. Therefore, if carbon deposits must be re-
moved, use a plug cleaner and complete cleaning with-
in 20 seconds for protection of the electrode. Do not
use wire brushes.
SPARK PLUG CABLE(1) Check cap and coating for cracks.
(2) Measure resistance.Limit: Max. 22
ksZ
IGNITION POWER TRANSISTOR
NOTE
An analog-type circuit tester should be used.No. l-No. 4 coil side
(1)Connect the negative (-) terminal of the 1.5 V power supply
to terminal (4) of the ignition power transistor; then check
whether there is continuity between terminal (13) and termi-nal (4) when terminal (3) and the positive
(+) terminal
are connected and disconnected.NOTE
Connect the (-) probe of the circuit tester to terminal (13).
Terminal 3 and (+) terminal
ConnectedTerminal 13 and terminal 4
Continuity
IUnconnectedINo continuitv
(2)Replace the ignition power transistor if there is a malfunc-
tion.No. ~-NO. 5 coil side
(1)Connect the negative (-) terminal of the 1.5 V power supply
to terminal (4) of the ignition power transistor; then check
whether there is continuity between terminal (12) and termi-nal (4) when terminal (2) and the positive
(+) terminal
are connected and disconnected.
NOTE
Connect the (-)
probe of the circuit tester to terminal (12).
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