1993 MITSUBISHI 3000GT engine oil

Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL b Ignition System16-49
27EL0089
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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
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Meters and Gauaes
SERVICE SPECIFICATIONS
Items
Standard values
Speedometer indicationerror
mph
2019-22
4038-44
1 57-66
1 76-88I
1001 94-110I
Tachometerindicationerrorrpm1,000f 100
3,000
f150
5,000f 250
6,000
Ik 300
Fuel gauge unit resistance R/ Point F_I3f2I
Point E
Fuel gauge unit float heightPoint F
mm (in.)
Point E
Engine coolant temperature gauge unit resistance [at 70°C (158”F)] Q110+7
18.6-21.6 (.73-.85)193.4-l
96.4 (7.61-7.73)
104 f 13.5
Fuel gauge resistance QBetween A - B/ Approx. 254I
Between A - CApprox. 101I
Between B - CApprox. 153I
Enginecoolant temperature Between A - B
gauge resistance QBetween A - CApprox. 51
Approx. 139
Between B
- C/ Approx. 190I
Oil pressure gauge resistance QApprox. 42I
Pressure gauge resistance QApprox. 72ISEALANT
ItemsSpecified sealantType
Engine coolant temperature gauge3M Nut Locking Part No. 4171 or Semi-drying sealant
unitequivalent
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Meters and Gauges54-13
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ENGIN'ECONTROL MODULE
OILPRESSURE
E#F"
(B-36)HRlOMOOAB
ENGINECOOLANT
TEMPERATURE
GAUGE UNIT
(B-01)
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Meters and Gauges54-17 ~
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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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Downloaded from www.Manualslib.com manuals search engine 54-20CHASSIS ELECTRICAL - Meters and Gauges
WARNING LIGHT CIRCUIT DIAGRAM
IGNSWI'IT1TCHON(IGl)
J/B
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15
0.85B-
0.858.
COMBINATIONMETERB-
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/\@F&NG
OFF -SWITCHONkm
Y-B
Y-E
HRlOM03AA
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Downloaded from www.Manualslib.com manuals search engine 54-24CHASSIS ELECTRICAL - Meters -and Gauges
WARNING LIGHT CIRCUIT DIAGRAM
IGNSWI'28-ITICTCH
2B-
J/B
0.85B-
0.858,0.85B-W
TURN-SIGNAL LIGHTCOMBINATION AND HAZARD LIGHTMETER
AL
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CHARGING
(c-71)
(D-44)NOTE
II
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Y-B
0
Y-BY-B
“5 (c-15)“2 (D-45)
Y-BY-B
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BRAKE
FLUID
LEVEL
OFF '*ONSENSOR
*(I (A-24)
1
1
OIL;@SRE
((B-37)
/
131
;~M&NG
SWITCH
(D-28)a
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Downloaded from www.Manualslib.com manuals search engine 54-30CHASSIS ELECTRICAL - Meters and Gauges
OIL PRESSURE GAUGE SIMPLE CHECKRemove the oil pressure gauge unit
coupling connector.Connect the harness connector via a
test light to the ground.
-1Place the ignition switch in the ON posi-Check the test light and gauge conditions.
(1) Test light lights. (Pointer of gauge does not swing.)
k-1 Replace oil pressure gauge.
1 (2) Test light lights. (Pointer of gauge swings.)k-1 Replace oil pressure gauge unit.
1 (2) Test light does not light. (Pointer of gauge does not swing.)/-1 Correct harness.
VOLTAGE GAUGE SIMPLE CHECKCheck voltage gauge for conditions.
(1) Voltage indicated by voltmeter differs from voltage indicated by
voltage gauge (position indicated by pointer).
-1 Replace gauge.
(2) Gauge does not operate.
/--I Correct harness or replace gauge.
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