Ignition MITSUBISHI 3000GT 1994 2.G Workshop Manual

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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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL b Ignition System16-49
27EL0089
Z7ELOOQO
1 Terminal 2 and (+) terminal/Terminal 12 and terminal 41
IConnectedIContinuitvI
IUnconnectedINo continuitvI
(2) Replace the ignition power transistor if there is a malfunc-
tion.No. ~-NO. 6 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 (11) and termi-nal (4) when terminal (1) and the positive
(+) terminal
are connected and disconnected.
NOTE
Connect the (-) probe of the circuit tester to terminal 11.
I Terminal 1 and (+) terminal/ Terminal 11 and terminal 41
-ConnectedIContinuityI
IUnconnectedINo continuityI
(2)Replace the ignition power transistor if there is a malfunc-
tion.
IGNITION COIL
Primary Coil Resistance
Measure the resistance between connector terminal (3) (pow-
er) and each coil terminal.Measuring point:
Coil A
(No.l-No.4 cylinder side coil) . . . . . . (2)-(3)Coil B (No.2-No.5 cylinder side coil) . . . . . .
(l)-(3)Coil C (No.3-No.6 cylinder side coil) . . . . . .
(4)-(3)Standard value: 0.67-0.81
Sz
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Secondary Coil Resistance
Measure the resistance between each coil high voltage termi-
nals.
Measuring point:Coil A (No. l-No. 4 cylinder side coil)
Coil B (No. ~-NO. 5 cylinder side coil)
Coil C (No. ~-NO. 6 cylinder side coil)
Standard value: 11.3-15.3
Wz

Downloaded from www.Manualslib.com manuals search engine 54-2
IGNITION SWITCH*..................................6
IGNITION SWITCH.................................
SPECIAL TOOL...................................6
LIGHTING SYSTEM................................35
FOG LIGHT....................................105
FRONT COMBINATION LIGHT AND
OPTICAL HORN LENS.........................106
HAZARD SWITCH..............................
110
HEADLIGHT...................................103
HIGH MOUNTED STOP LIGHT..................107
ON-VEHICLE SERVICE.........................100
POP-UP SWITCH AND FOG LIGHT SWITCH....109
REAR COMBINATION LIGHT AND
LICENSE PLATE LIGHT........................106
RELAY........................................108
RHEOSTAT....................................
110
SPECIAL TOOLS................................36
SPECIFICATIONS...............................
35
General Specifications..........................35Service Specifications..........................35
TROUBLESHOOTING............................37
METERS AND GAUGES..............................9
COMBINATION GAUGES........................33
COMBINATION METERS.........................31
ON-VEHICLE SERVICE...........................26
SPECIFICATIONS.................................
9
General Specifications............................9Sealant........................................ll
Service Specifications...........................11
TROUBLESHOOTING............................12
RADIO AND TAPE PLAYER.......................124
CD AUTO CHANGER..........................191
RADIO AND TAPE PLAYER WITH ANTI-THEFTSYSTEM.......................................156
MOTOR ANTENNA/ANTENNA FEEDERCABLE/AMPLIFIER.............................188
RADIO AND TAPE PLAYER....................186
RADIO REMOTE-CONTROL*...................186
SPEAKER.....................................
187
TROUBLESHOOTING...........................
124
REAR WINDOW DEFOGGER. . . . . . . . . . . . . . . . . . . . . .192
DEFOGGER RELAY. . . . . . . . . . . . . . . . . . . . . . . . . . . .204
ON-VEHICLE SERVICE. . . . . . . . . . . . . . . . . ~ ~. . . . . .203
REAR WINDOW DEFOGGER SWITCH . . . . . . -. . . 203
SPECIAL TOOLS.. . . s.. . . . . . . . . . . . . . . . . . . . . . . . .192
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . . .193
REAR WIPER AND WASHER . . ~ *. . Refer to GROUP 51
SEAT BELT (BUZZER). . . . . . . . . . . . Refer to GROUP 52A
SEAT BELT (TENSION-REDUCERTYPE SEAT BELT) . . . . . . . . . . . . . . . Refer to GROUP 52A
SUPPLEMENTAL RESTRAINTSYSTEM (SRS)..-...............Refer to GROUP 52B
THEFT-ALARM SYSTEM . . . . . . . . . . . . . . . . . e . . . . . m.. s205
SPECIAL TOOLS.. . . . . . . . . . . . . . . . . . . .
m . . . . . . . .e205
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . .206
WINDSHIELD WIPER ANDWASHER. . . . . . . . . . . . . . . . . . . . . ~. . .Refer to GROUP 51

Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Battery54-3
BATTERY
LSPECIFICATIONSGENERAL SPECIFICATIONS
ItemsUp to 1993 modelsFrom 1994 models
Type75D26R-MF75D23R-MF
Ampere hours
(5HR) Ah5252
Cranking rating [at -18°C (O’F)] A490520
Reserve capacity min.123118
NOTES
1.CRANKING RATING is the current a battery can deliver for 30 seconds and maintain a terminal voltage of
7.2 volts or greater at a specified temperature.
2.RESERVE CAPACITY RATING is the amount of time a battery can deliver 25A and maintain a minimum terminal
voltage of 10.5 at
27% (80°F).
L
16FO123
White
Blue
ChargingGood
necessaryconditionON-VEHICLE
SERVICE
BATTERY INSPECTION
BAlTERY VISUAL CHECK (1)
The battery contains a visual test indicator which gives blue
signal when an adequate charge level exists, and white signal
when charging is required.
BAlTERY VISUAL CHECK (2)
Make sure ignition switch is in Off position and all battery
feed accessories are Off.
1.Disconnect ground cable from battery before disconnecting
(+) cable.
2. Remove battery from vehicle.
CautionCare should be taken in the event battery case is
cracked or leaking to protect hands from the electro-
lyte. A suitable pair of rubber gloves (not the house-hold type) should be worn when removing battery
by hand.
3.Inspect battery carrier for damage caused by loss of acid
from battery. If acid damage is present, it will be necessaryto clean area with a solution of clean warm water and
baking soda. Scrub area with a stiff bristle brush and wipe
off with a cloth moistened with ammonia or baking soda
in water.
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Downloaded from www.Manualslib.com manuals search engine 54-6CHASSIS ELECTRICAL - Ignition Switch
IGNITION SWITCHSPECIAL
TOOL
ToolTool number and nameSupersessionApplication
MB990803
Steering wheel pullerGeneral service toolRemoval of steering wheel
IGNITION SWITCHREMOVAL AND INSTALLATION
40 Nm29 ft.lbs.6 Nm
6
Steering lock cylinder removalsteps
Ignition switch segment removalsteps
1. Air bag module (Refer to GROUP 52B
4Ab
- Air Bag Module and Clock Spring.)3. Knee protector
2. Steering wheel(Refer to GROUP 52A - Instrument
3. Knee protector
Panel.)
LRedE;)to GROUP 52A - Instrument:i:4. Column cover, lower
5. Column cover, upper
:::4. Column cover, lower6. Lap cooler duct and foot shower duct
5. Column cover, upper10. Key reminder switch segment
6. Lap cooler duct and foot shower duct11. Ignition switch segment
,A+ 7. Column switch and clock springassembly
NW
8. Ignition key illumination ring
9. Steering lock cylinder
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Ignition Switch54-7REMOVAL SERVICE POINTS
+A, STEERING WHEEL REMOVAL
Remove the steering wheel by using the special tool.
Caution
Do not hammer on the steering wheel to remove it;
doing so may damage the collapsible mechanism.
Front of vehicles
219FO12:
+B,COLUMN COVER LOWER / COLUMN COVER
UPPER REMOVAL
After the screws have been removed, remove the covers,while making sure not to break the grippers.
+C, STEERING LOCK CYLINDER REMOVAL
(1) Insert the ignition key into the steering lock cylinderand place the key in the ACC position.
(2)Press the lock pin down with a Phillips head screwdriv-
er (small-size one) to remove the steering lock cylinder.INSTALLATION SERVICE POINT
.A+COLUMN SWITCH AND CLOCK SPRING
ASSEMBLY INSTALLATIONLine up the “NEUTRAL” mark of the clock spring with
the mating mark to center the clock spring.
CautionIf the clock spring is not centered, problems such
as intermediate failure of the steering wheel to turn,broken ribbon cable in the clock spring, or the like
could occur. As a result, they might hinder proper
operation of the SRS, resulting in serious injury.
iI
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Downloaded from www.Manualslib.com manuals search engine 54-8CHASSIS ELECTRICAL - Ignition Switch
216AO57000002296INSPECTION
IGNITION SWITCH CHECK
(1) Remove the knee protector, the column cover lower andd’
the column cover upper. (Refer to GROUP 52A - Instru-
ment Panel.)
(2) Disconnect the wiring connector from the ignition switch
and key reminder switch, and connect an ohmmeter to
the switch side connector.(3) Operate the switch, and check the continuity between
the terminals.
PositionKeyConnector AConnector B
LOCK
ACC
ON
START
ConnectorB
ignitionkey
illumina-
tion light
terminal
No.
415
LJ
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Downloaded from www.Manualslib.com manuals search engine 54-12CHASSIS ELECTRICAL - Meters and Gauges
TROUBLESHOOTINGMETERS AND GAUGES CIRCUIT DIAGRAM
IGNITIONSWITCH(IG1)I
J/B
I60
0.05B-W
t
S(D-44)
O.B5B-W
B-W,,59 (D-04)COMBINATION
q----_____----____-_------~~~~~--~-------~~~~~METER,\
r--t-- I
2
B
ION
ISTOR
r
2B
TURBOLJt@io 1 TURBO
64&&- - - - - - - -- -- - - -
Y-W
54 (D-04)
16 (D-44)
16 (c-71)7
J(c-82)
B-W
B
b
IGNIPOWETRAN
(F)B
B-
2B
2B
2Bd
0
(c-82)mn51152153154155156157~561 59 160~61~62~S~s4~65~66~6?
(D-05)HRlOMOOAA
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Downloaded from www.Manualslib.com manuals search engine 54-16CHASSIS ELECTRICAL - Meters and Gauges
METERS AND GAUGES CIRCUIT DIAGRAM
IGNITIONSWITCH(IG1)
B-W
J/B
CHARGING
\,
0. 85B-W“' -
tO.B5B-Ws(D-44)
B-1
O.B5B-W
L-RI
--r
tB-WTURN-SIGNAL LIGHT
WARNING LIGHTAND HAZARD LIGHT
--,,59 (D-04)COMBINATION
METER
/\
B-W
I
2E
2E(F:
64(D-C
Y
\L
-W
\:
---.
-W
13
)Y
)B '
0
2Bn=
-------------____109
ES(c-14)
--------------___
.MFI SYSTEMIGN:
R3
(B-34) (c-14)(c-71)
m m m z ~~~~5&4
60161(6216~64165166167(D-44)
(F-14)(Fm (ml'
NOTE4::CONVERTIBLE
-..I
-----53
B
2
B
ION
ISTOR
i
2B
‘d54 (D-04)
I6 (D-44)I
16 (c-71)
1
j(c-82)
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Downloaded from www.Manualslib.com manuals search engine 54-18CHASSIS ELECTRICAL - Meters and Gauges
OPERATION
l
When the ignition key is at the “ON” position,the fuel gauge is activated.
l
When there is much fuel, the unit’s resistanceis small and the current flowing in the circuit
is great, so the gauge’s indicator indicates inthe “F” area.
l When there is little fuel, the unit’s resistance
is high and the current flowing in the circuit
is small, so the gauge’s indicator indicates inthe
“E” area.

lWhen the ignition key is at the “ON” position,
the engine coolant temperature gauge is acti-
vated.l
When the engine coolant temperature is high,
the unit’s resistance is low and there is a greatflow of current in the circuit, so the gauge’s
indicator indicates in the “H” area.
l
When the engine coolant temperature is low,
the unit’s resistance is high and there is a smallflow of current in the circuit, so the gauge’s
indicator indicates in the “C” area.
/Speed sensor (electrical speedometer type)>l Pulses are produced in accordance with the
vehicle speed, and vehicle-speed signals areinput to systems (the MFI system, etc.) that
regulate according to the vehicle speed.
TROUBLESHOOTING HINTS
1.The fuel gauge doesn’t function, or shows the
incorrect indication.
(1) Disconnect the connector of the fuel pumpand gauge unit assembly; the ‘F” side is
indicated when terminal (5) is then
grounded.l Check the fuel gauge.
2.The engine coolant temperature gauge doesn’t
function, or shows the incorrect indication.
(1)The “l-l” side is indicated when the connector
of the engine coolant temperature gauge
unit is disconnected and then grounded.l
Check the engine coolant temperature
gauge unit.
3. Systems dependent upon control according to
the vehicle speed do not function correctly.l Check the reed switch (mechanical
speedometer type)l Check the speed sensor (electrical
speedometer type)
coil pressure gauge>l
When the ignition key is at the “ON” position,
the oil pressure gauge is activated.
lWhen oil pressure is high, the internal contacts
of the gauge unit are kept closed for a longerperiod of time. This causes more current to
flow in the circuit, and the gauge pointer swings
to the high pressure side.
lWhen oil pressure is low, the internal contactsof the gauge unit open in a shorter period of
time. Therefore, there is less current flowing
in the circuit and the gauge pointer swings to
the low pressure side.

lWhen the ignition key is set to the “ON” position,the gauge indicator will be at
“0”.l
When the engine is started, the indicator will
move from
“0” to the minus (-) side, and then,as the boost level increases, it will move to
the plus
(+) side.
l When the ignition key is placed in the “ON”
position, the voltage gauge operates and indi-
cates a battery voltage of approximately 12 V.l
When the engine is started, the voltage gauge
indicates a battery voltage of 12 to 16 V, indicat-ing that the battery is on charge.
4. The oil pressure gauge doesn’t function, or
shows the incorrect indication.
(1)The “H” side is indicated when the connectorof the oil pressure gauge unit is discon-
nected and then grounded.l Check the oil pressure gauge unit.
5.The meter illumination light does not illuminate.
(1) The tail lights illuminate.l Check the rheostat.
6. The voltage gauge doesn’t function, or shows
the incorrect indication.l Check the voltage gauge.
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