battery MITSUBISHI 3000GT 1993 2.G Owner's Guide

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 54-4CHASSIS ELECTRICAL - Battery
4. Clean top of battery with same solutions as described
in step (3).
5.Inspect battery case and cover for cracks. If cracks are
present, battery must be replaced.
6.Clean the battery post with a suitable battery post cleaning
tool.7. Clean the inside surfaces of the terminal clamps with a
suitable battery terminal cleaning tool. Replace damaged
or frayed cables and broken terminals clamps.8. Install the battery in vehicle.
9.Connect (+) and (-) cables to battery in the order of men-
tion.
10. Tighten the clamp nut securely.BATTERY
CHARGLNG
Caution
When batteries are being charged, an explosive gas forms
beneath the cover of each cell. Do not smoke near batteries
on charge or which have recently been charged. Do notbreak live circuits at the terminals of the batteries on
charge. A spark will occur where the live circuit is broken.
Keep all open flames away from the battery.
Battery electrolyte temperature may temporarily be allowed
to rise to 55°C (131°F). Increase of electrolyte temperature
above 55°C (131 OF) is harmful to the battery, causing deforma-tion of battery cell, decrease in life of battery, etc.
CHARGE RATE
If the test indicator is white, the battery should be charged
as outlined below.
When the dot appears or when maximum charge shown below
is reached, charging should be stopped.
NOTE
When the charging is performed at 5 amps, charging is virtually
100% three hours after the indicator’s indication changes from
white to green.
Use fast charging only in an emergency.
If the indicator does not turn to green even after the battery
is charged, the battery should be replaced; do not overcharge.
Charge Rate Chart
Batten/Slow Charging
Fast ChargingI
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Battery54-5BATTERY TESTING PROCEDURE
LTEST STEP
Clean terminals and clamps.
- Replace battery
(1) Remove hold-downs and shields.(2) Check for broken/cracked case or cover.
OK
NG- Replace battery
(1) Turn headlights on for 15 seconds.
NG(2) Turn headlights off for 2 minutes to allow battery voltage to- Charge battery at 5 amps.
stabilize.
(3) Disconnect cables.(4) Read open circuit voltage.
IOK: Open circuit voltage is more than
12.4V.Re-test(2) Load the battery at the recommended discharge rate (see
LOAD TEST RATE CHART) for 15 seconds.(3) Read voltage after 15 seconds, then remove load.
(4) Compare the measured value with the minimum voltage. (SeeOK: Higher than the minimum voltage
i
Normal
LL16 (60)
9.5
LOAD TEST RATE CHARTLoad test Cranking
Reserve
W-w)rating (0°F) capacity
Application
1 240 amps / 490 amps / 123 minutes 1 75D26R-MF 1
240 amps520 amps123 minutes 75D23R-MF
1 TSB Revision1

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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- 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 54-28CHASSIS ELECTRICAL - Meters and Gauges
16FO11500002300
16Fo255 00002383
FUEL GAUGE UNIT CHECKTo check, remove fuel gauge unit from fuel tank. (Refer to
GROUP 13F
- Fuel Tank.)
Fuel Gauge Unit Resistance
(1)Check that resistance value between the fuel gauge termi-
nal and ground terminal is at standard value when fuel
gauge unit float is at point F (highest) and point E (lowest).
Standard value:Point F: 3
If: 2 GPoint E: 110
It 7 Q
(2) Check that resistance value changes smoothly when float
moves slowly between point F (highest) and point E (low-
est).Fuel Gauge Unit Float Height
Move float and measure the height at point F (highest) and
point E (lowest) with float arm touching stopper.
Standard value:Point F: 18.6-21.6 mm (.73-.85 in.)
Point E: 193.4-196.4 mm (7.61-7.73 in.)
FUEL SENSOR CHECKConnect fuel gauge unit to battery via test light (12 V-3.4
W). Immerse in water. Condition good if light goes off whenunit thermistor is in water and lights when unit is removed
from water.
CautionwAfter completing this test, wipe the unit dry and install
it in the fuel tank.
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Downloaded from www.Manualslib.com manuals search engine 54-78CHASSIS ELECTRICAL - Lighting System
OPERATION light>l
Battery voltage is always applied to the dome light. When the dome light switch is turned to “ON”,
the dome light will remain lit. After either door is opened if the dome light switch is at “DOOR” position,the dome light will come on.
lWith the dome light turned on (with the ignition switch in the OFF position and with the dome light
switch in the DOOR position), close all doors, and the timer circuit in the ETACS unit will be activatedto gradually vary the voltage for approx. 6 seconds owing to the duty control, and the voltage will
be output to transistor Tr. Since the voltage applied to the dome light gradually decreases, the dome
light will be dimmed.lIf the ignition switch is turned to “ON” while the dome light is lit (while the timer is activated), the
timer circuit will be opened to turn “OFF” transistor Tr. This will immediately turn off the dome light
without dimming. light>-lBattery voltage is always applied to the foot lights and ignition key illumination light.
With the ignition switch in the OFF position, open any door, and all lights will come on.
l
With all lights turned on (with the ignition switch in the OFF position), close all doors, and the timercircuit inside the ETACS unit will operate in the same manner as the dome light to dim all lights.
When the ignition switch is placed in the ON position with all lights turned on (with the timer in operation),the same operation as the dome light will take place.
TROUBLESHOOTING HINTS
Phenomenon
Dome light does not come on
when
a door is opened with the
dome light switch in the DOOR
position.
Check the door switch input signal.
Check the door switch. (Refer to GROUP 42 -
The foot lights and ignitionl
key cylinder illumination
Check the dome light switch.
light illuminate.
lCheck the dome light bulb.
Dome light, foot lights and ignition key illumination light go out
l
at once when doors are closed.Check the door switch input signal.(Refer to P.54-80.)Even if ignition switch is turned on while lights are being
l
dimmed,lightsdo notout at the same time.
Check the ignition switch input signal.
go
(Refer toP.54-80.)
COMPONENT LOCATION
Data ‘link
connect&
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Lighting System54-83
L-i
OPERATIONl
Battery voltage is always applied (via sub-fusiblelink No. (6) and multipurpose fuse No. (19))
to the luggage compartment light and door light.l
When the door is opened, the door switch is
switched ON and the door light illuminates.l When the
liftgate is opened, the luggage
compartment light switch is switched ON and
the luggage compartment light illuminates.GLOVE BOX LIGHT, VANITY MIRROR LIGHT AND INSPECTION LIGHT
OPERATIONl
When the lighting switch is.placed in the TAIL
or HEAD position, and the contacts of the tail
light relay close, battery voltage is applied viathe dedicated fuse (2) to the glove box light,
the vanity mirror light and the inspection light.l
When the glove box is opened, the glove box
illumination light switch is switched ON and the
glove box illumination light illuminates.l
When the vanity mirror lid is opened, the vanity
mirror light switch is switched ON and the vanity
mirror light illuminates.l
When the engine hood is opened, the inspection
light switch is switched ON and the inspection
light illuminates.
NOTE
The light automatic shut-off system is valid for theglove box light, vanity mirror light and inspection
light. (Refer to
P.54-37.)
i
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Downloaded from www.Manualslib.com manuals search engine 1. When operation is normal
l
When the ignition switch is switched to the
ON position, battery voltage is applied (viathe multipurpose fuse (11) and hazard
switch) to the turn-signal and hazard flasher
unit.l
When the turn-signal switch is switched to
the LH position,
Trl (within the flasher unit)
is switched ON and OFF repeatedly.
Then the contacts of the relay 1 (also within
the flasher unit) repeatedly switch from ON
to OFF, causing the turn-signal lights and
turn-signal indicator light LH to flash.l
When the turn-signal switch is switched to
the RH position, Tr2 (within the flasher unit)
is switched ON and OFF repeatedly.Then the contacts of relay 2 (also within
the flasher unit) repeatedly switch from ON
to OFF, causing the turn-signal lights and
turn-signal indicator light RH to flash.2. If one of the bulbs is burned out
lIf the LH (or RH) turn-signal light bulb is
burned-out, the resistance of the turn-signalcircuit as a whole increases, resulting in
Lshorter ON and OFF intervals of the LHTrl (or RH Tr2) and a higher flashing rateof the LH lights (or RH lights).CHASSIS ELECTRICAL
- Lighting System54-89
TURN-SIGNAL LIGHT AND HAZARD
L
LIGHT
OPERATION
lWhen the hazard-warning switch is switch-
ed to the “ON” position, the relay contactof the turn signal and hazard flasher unit
is switched ON and OFF repeatedly, in thesame manner as for the operation of the
turn-signal lights, and the left and right turn-
signal lights and turn-signal indicator lights
simultaneously flash repeatedly.
NOTE
(1) The number of flashes of the hazard-warn-
ing lights does not change if there is dam-
aged or disconnected wiring of one light.
(2)The light automatic shut-OFF system is valid
for the illumination light of the hazard switch.(Refer to
P.54-37.)
TROUBLESHOOTING HINTS
1.The turn-signal lights and hazard-warning lightsdo not operate at all.
l Check the hazard switch contact (power
supply side).l Check the turn-signal and hazard flasher
unit.2. All turn-signal lights at the left (or right) side
do not function.
(1) The hazard-warning lights function normal-
ly-lCheck the hazard switch contact (turn-
signal side).l Check the turn-signal switch.
3.The number of flashes of the turn-signal lights
is excessive.l Check the bulbs.
4. The hazard-warning lights do not function.
(1) The turn-signal lights function normally.l
Check the hazard switch contact (haz-
ard-warning light side).
NOTE
For the troubleshooting hints of the automatic lightshut-OFF system, refer to
P.54-37.
COMPONENT LOCATION
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Downloaded from www.Manualslib.com manuals search engine 54-90CHASSIS ELECTRICAL - Lighting System
CiRCUlT DIAGRAM (UP TO 1994 MODELS)
IGNITIONSWITCH(IG1)BATTERY$i[l;\IGHT
1.25R-W
28-W0~&~kCATED15A
,,7 (c-82)0.85R-B lG-w 6 (c-69)----------__J/Blop
,\\1
It115AV\I\/\/\,------------ -------- ----\(c-71,‘% ‘52‘-34 '8
Oi3f$ Ok.8B"O$Z0.85G-W
(D-44)25----2&$ ---- ---'3 -----
op; Ok":"i;";
GIR,z----:'s
0.85G-WG-LG-R,,5,7,,lO,,9,,3
KK%
/\\,\,\OFF-e. ONOFF*-. ONOFF/-. ON
(D-08)ILL
----
G-R
IIII I
*4,
0.85G-080.85G-06B-Y2
(D-41)y3:4 (D-43)I
RHEOSTAT
0.85G-00.85G-0
G-YG-l
,,14,,ll10,
G-RCOLUMN SWITCH
(c-10)
LG-I$GR-$$' LG-i$k$
n
TURN SIGNAL
AND HAZARD
FLASHER UNIT
(E-30)HR09MOOAA
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