1995 MITSUBISHI 3000GT switch

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
\:
---.
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13
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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
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-----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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Downloaded from www.Manualslib.com manuals search engine 54-20CHASSIS ELECTRICAL - Meters and Gauges
WARNING LIGHT CIRCUIT DIAGRAM
IGNSWI'IT1TCHON(IGl)
J/B
r
G
15
0.85B-
0.858.
COMBINATIONMETERB-
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FUEL
GAUGE
UNIT
m
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2B
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Y
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1
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12 (D-03)
Y-B
c
I
Y-B
Y-G
/\@F&NG
OFF -SWITCHONkm
Y-B
Y-E
HRlOM03AA
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Downloaded from www.Manualslib.com manuals search engine LJ
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:i:CHASSIS ELECTRICAL
- Meters and Gauges54-23
IGNISWI?
2B-k
2B-k
2B-k
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2B-Y
(A-67)
2B-Y
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1.25B-Y
IMFI SYSTEM
IGNITIONSWITCH(IG1)I
CHARGING
J/B
s(c-71)
0.85B-W
Y
s(D-44)
0.85B-W
lmDIODE
1.25B-Yu(Y-G)Y-G0
D-10Y-G
66
A COMBINATIONMETER90(D-04)
HRlOMOIAB
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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
'6.W
“6
-W
13
-W
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I y, ,
‘8"11
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j9METER ANDGAUGES~r-----------r -------- -- _______
IIIiizzIcI
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Y-L
"9 (D-16)
Y-L
y-L‘18 (F-44)%3‘y-1
Y-L
I(F)
t1
;B-R
I
IN(IGl)
B-W
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1
CHARGING
(c-71)
(D-44)NOTE
II
.2 (D-03)-----J61
LL
'3
Y
(c
,Y
Y-B
0
Y-BY-B
“5 (c-15)“2 (D-45)
Y-BY-B
4:1
;>6:*=s,2
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 CHASSIS ELECTRICAL - Meters and Gauaes
i
L/
IGNISW17
2B-\1
28-l
2B-\I
2B-‘1
(A-67)
2B-Y
STARTING
SUPPLEMENTAL
~E~&~J$NT
----------.+OFFIN
13
i
G-B
3(c-02) 3--
G-B
1.25B-Y
+MFI SYSTEM
'(D-15)DIODE
1.25B-Yu
I
IGNITIONSWITCH(IG1)
J/B
ml
0
15A“6
(D-44)
0.85B-W
B-W(130.85B-W
METER AND
GAUGESB-WTURN-SIGNAL LIGHT
r----+$30AND HAZARD LIGHT
i B-W
9
i;yEKNATION
(D-04)
HRlOM05AB
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Downloaded from www.Manualslib.com manuals search engine I,;CHASSIS ELECTRICAL
- Meters and Gauges54-27
c I\\ zl6F024;
L:FUEL GAUGE SIMPLE CHECKTACHOMETER CHECK
(1)insert paper clip into the engine revolution speed detection
terminal provided in the engine compartment, and connectthe engine tachometer to the inserted paper clip.
Caution
As the tachometer is negative grounded, do not con-
nect battery conversely to prevent damaging transis-tor and diode.
NOTE
For tachometer inspection, use of a fluxmeter-type engine
tachometer is recommended. (Because a fluxmeter onlyneeds to be clipped to the high tension cable.)
(2) Connect the engine tachometer and compare the engine
tachometer and tachometer readings. Replace tachometer
if difference is excessive.
Standard value:1,000
f 100 rpm
3,000
+ 150 rpm
5,000
f 250 rpm
6,000
f 300 rpm
CautionThe engine speed signal output from the engine is
one-third of the actual speed. When the engine speed
is measured, make sure that the engine tachometeris placed in the
2-cylinder range. (The real speed is
indicated.)
Connect a test light to the harness con-nector.
Place the ignition switch in the ON posi-
tion.Check the test light and gauge conditions.
1 (1) Test light lights. (Pointer of gauge does not swing.)/-.-I Replace fuel gauge.
[ (2) Test light lights. (Pointer of gauge swings.)/-.--I Replace fuel gauge unit.1
1 (3) Test light does not light. (Pointer of gauge does not swing.)k-1 Correct harness.I
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Meters and Gauaes
i
ENGINE COOLANT TEMPERATURE GAUGE SIMPLE CHECKConnect the harness connector via a
test light to the ground.
Remove the water temperature gauge
unit coupling connector.
t
Place the ignition switch in the ON posi-tion.
I
(12 v’3.4 w) \ //Z16FO13lCheck the test light and gauge conditions.
i(1) Test light lights. (Pointer of gauge does not swing.)_____c Replace water temperature gauge.
[ (2) Test light lights. (Pointer of gauge swings.)Replace water temperature gauge unit.
[ (3) Test light does not light. (Pointer of gauge does not swing.)/-------I Correct harness.
ENGINE COOLANT TEMPERATURE GAUGE UNIT CHECK
To check, remove engine coolant temperature gauge unit from
the thermostat housing.
Engine Coolant Temperature Gauge Unit Resistance
(1)Immerse unit in 70°C (158OF) water to measure resistance.Standard value: 104
f 13.5 Sz(2) After checking, apply the specified sealant around the
thread of engine coolant temperature gauge unit and install
on the thermostat housing.
Specified sealant:3M Nut Locking Part No. 4171 or equivalent
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