check engine MITSUBISHI 3000GT 1993 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine 54-174
CHASSIS ELECTRICAL - Radio and Tape Player
C-3No sound from one speaker.t
YesReplace the cassette player and check again.
NoRepair or replace cassette player.
thespeaker harness for conductance.___c It conducts electricity but isshorted out.
+Check the speaker for conductance.
NoRepair speaker harness and ensureproper connection of relay connectors.
tRepair or replace speaker.
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Downloaded from www.Manualslib.com manuals search engine 54-178CHASSIS ELECTRICAL - Radio and TaDe Plaver
D. CD PLAYER
D-lCD will not be accepted.
Does the shutter open when a CD is inserted? l l
YesTake out the CD.
1 Yes
tThough CD is completely inserted once, “e
CD is rejected? l 3No-l
Yes
tCheck CD.l Is the labeled side faced downward?
l Is the recorded face of the CD dirty?
l Does dew exit on the recorded face of the CD?- Yes- Insert the CD correctly or check to see if the
CD is defective.
No
l 1‘2
‘3
tReplace CD.If the CD is already loaded, doesn’t the shutter open to allow
insertion when another CD is inserted?
If the key switch is not at ACC or ON, the CD stops at depth
of 15 mm below the panel surface even when it is inserted, andit will be rejected when pushed farther?
Even though the CD is loaded, E (error) is sometimes displayedwith the CD rejected because of vibration/ shock or dew on the
CD face or optical lens.
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player54-179/
L
D-2No sound.1I
Does it play if an existing proper CD is inserted? )Yes-Replace defective CD.
No
No
FYes
ture, and recheck operation.*IDoes it operate properly?
II NoAre the radio set and CD player connected
C;_TRepair or replace CD player.
-(The combined radio cassette must operate
properly.)
D-3CD sound skips.
1.Sound sometimes skips during parking.
iIs CD face scratched or dirty?CD is defective, or clean CD.
NoDoes it play properly if CD is replaced with an existing proper CD?
Yes
Repair or replace CD player..
1 Replace CD.
2.Sound sometimes skips during driving.(Stop vehicle, and check it.)
(Check it by using a proper CD which is free of scratch, dirt or other abnormality.)
Does sound skip when the side of
YesNo
tSecurely mount the CD player.
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Downloaded from www.Manualslib.com manuals search engine 54-182CHASSIS ELECTRICAL - Radio and Tape Player
E-2Motor antenna extends and retracts but does not receive.Is the antenna’ itself OK?
YesRepair or replace it.
Is operation normal when a new antenna assembly is directly installedto the radio?
YesRefer to B. “Radio troubleshooting”.
/ Replace the feeder cable.
Hz+
216N0087-IChecking the antenna
*
Ohmmeter measurement locations
Circuits from F to A, B, C, D and E
Circuit between G and H
Circuits from H to A, B, C, D and E
Result
Continuity
Continuity
No continuity
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player54-I 89
Antenna going downAntenna going up
16FO203
16F019800002406
REMOVAL SERVICE POINT
+A,REAR SEAT CUSHION REMOVAL
Raise and remove the seat cushion with the lever pulled.
INSTALLATION SERVICE POINT
.AqREAR SEAT CUSHION INSTALLATION
(1) Securely fit the attachment wire of the seat cushion
under the seatback.
(2) Pass the inner seat belt buckles through the cushion.
(3) Securely fit the lock plates of the seat cushion into
the holes in the floor.
INSPECTION
ANTENNA MOTOR INSPECTION
Disconnect the motor antenna control unit connector, connect
the positive terminal of the power supply to terminal (1) and
connect the negative terminal to terminal (4) to check that
the antenna goes up, and that when the connections are re-
versed, the antenna goes down.
MOTOR ANTENNA CONTROL UNIT INSPECTION
(1) Connect the harness connector to the motor antenna.
(Body harness)
(2) Disconnect the antenna motor connector.
(3) With the ignition switch in the ACC or ON position, operate
the radio switch and check the voltage between the termi-
nals during the period when the antenna is going up or
going down.
I
I
Antenna operating
directionTerminals to checkVoltage (V)
I
Down
UPl-310-13
3-410-13
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player
Ring nut
Tbothsideofrack cable
Rack cable
16LO42700002407,8Loa1
7
Tooth side of rack cable
ANTENNA POLE REPLACEMENT(1) Remove the ring nut.
(2) Set the radio switch to ON. After the antenna pole has
extended, remove the antenna pole and rack cable as
an assembly._.(3) Extend the antenna pole up to its farthest point.
NOTEIf the motor end of the rack cable is bent, straighten it.
(4) Force the rack cable into the motor assembly with the
tooth side of the rack cable toward the luggage compart-
ment.(5) Turn the tooth side of the rack cable toward the rear of
the vehicle
(90” clockwise) to bring the rack cable into
mesh with the motor gear.
(6)Lightly pull the rack cable. If it comes out without resistance,
it means that the rack cable is not in mesh with the motor
gear. Recheck that the rack cable end is not bent before
repeating the above-mentioned steps (2) and (3).(7) With the antenna pole upright and the radio switch at
OFF, take up the rack cable. As the rack cable is takenup, insert the antenna pole toward the motor antenna.
(8) After the ring nut has been tightened, set the radio switchto ON and OFF to check the operation of the antenna
pole.
I
I
I
vi ~
I~
d
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Downloaded from www.Manualslib.com manuals search engine 54-202CHASSIS ELECTRICAL - Rear Window Defogger
With voltmeterData link connector
When using the MUT-IICUD to 1993 models>
Y2OFO16400002231
Ground
INPUT SIGNAL

When using the scan tool
(MUT) or voltmeter
Using the scan tool or voltmeter, check whether or not the
input signals from each switch are being input to the ETACS
unit.
(1) Connect the scan tool to the data link connector located
at the right side of the junction block or connect the voltme-
ter between the ETACS terminal and the ground terminal.
(2) Check if the buzzer of the scan tool sounds or the needle
of the voltmeter moves when each switch is operated.
If the buzzer sounds or the needle moves, the input signalsare being input to the ETACS unit, so that switch can
be considered to be functioning normally. If not, the switch
or switch input circuit is faulty. Check the switch and the
switch input circuit.

When using the scan tool (MUT-II)
(1) Connect the scan tool to the data link connector. When
connecting the scan tool to a vehicle up to 1993 models,
use the adapter harness supplied together.
Caution
Turn off the ignition switch beforehand whenever thescan tool is connected or disconnected.
(2) If the scan tool makes a peep sound when each switchis operated (turned ON/OFF), the input signal to ECU
is normally sent from the switch circuit system. 1994 models>
When using the voltmeter
(1)Connect a voltmeter to the ETACS terminal and the ground
terminal of the data link connector using the special tool.
(2) If the voltmeter pointer deflects once when each switchis operated (turned ON/OFF), the input signal to
.ECU
is normally sent from the switch circuit system.
U2OFO163
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Rear Window Defogger54-203
L
L-J
c
Normal characteristic curve
Voltage
j\
PositivePrinted heater lineterminalNegativeterminal
Abnormal characteristic curve
Voltage
Qj (( r”!“Yui;
Positive
terminalPrinted heater line Negativeterminal
216Y332
BreakTape
\
Conductive
paint
216Y333
16FO16700002409ON-VEHICLE SERVICE
THE PRINTED-HEATER LINES CHECK
(1) Run engine at 2,000 rpm. Check heater element with bat-tery at full.
(2) Turn ON rear window defogger switch. Measure heater
element voltage with circuit tester at rear window glass
center A.
Condition good if indicating about 6 V.
(3) If 12 V is indicated at A, there is a break in the negative
terminals from A.
Move test bar slowly to negative terminal to detect where
voltage changes suddenly (0 V).(4) If 0 V is indicated at A, there is a break in the positive
terminals from A. Detect where the voltage changes sud-
denly (12 V) with the same method described.
THE PRINTED-HEATER LINES REPAIR
REQUIRED MATERIALSl Thinner
l Tapel Lead-free gasoline
l Fine brush
l Conductive paint
(1) Clean disconnected area with lead-free gasoline. Tape
along both sides of heater element.
(2) Mix conductive paint thoroughly. Thin the required amount
of paint in a separate container with a small amount of
thinner and paint break three times at 15 minute intervals.(3) Remove tape and leave for a while before use (circuit
complete).
(4) When completely dry (after 24 hours) finish exterior with
a knife.
Caution
Clean glass with a soft cloth (dry or damp) along defog-
ger heater element.REAR WINDOW DEFOGGER SWITCH
(1)Remove rear window defogger switch from the meter bezel.(Refer to
P.54-109.)
(2) Operate the switch and check the continuity between the
terminals.
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Downloaded from www.Manualslib.com manuals search engine INSPECTION

I I IIQ!-hh&Connect battery power source to terminal 5. Check circuitbetween terminals with terminal 3 grounded.
lBFO206cl994 models>00002410
54-204CHASSIS ELECTRICAL - Rear Window Defogger
~1
~1994 models>Connect battery power source to terminal 1. Check circuit
between terminals with terminal 3 grounded.
L---i00002411
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Theft-alarm Svstem54-205
THEFT-ALARM SYSTEM
L,
SPECIAL TOOLS
L
Q
Tool number and name
MB991 341
Scan tool
(Multi-use tester
)
ROM Pack
(For the number,refer to GROUP 00
-
Precautions Before
Service.)
MB991 502
Scan tool
(MUT-II)
ROM pack
MB991
52%.
Diagnostictrouble
code check harnessSupersession
MB991 341 C
MB991 502
MB991 529
i
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Application
Up to 1993 models
Checking the theft-alarm system
All models
Checking the theft-alarm system
From 1994 models
Checking the theft-alarm system
using a voltmeter