length MITSUBISHI 3000GT 1992 2.G Workshop Manual

Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition System16-39
Wave-form Observation PointsPoint A: The height, length and
slope~of the spark line (refer to abnormal wave-form examples 1, 2, 3
and 4) show the following ‘trends.’\
Spark linePlug gapCondition of Compression Concentration
electrode
forceIgnition timing Sparkof air mixture
plug cable
LengthLongSmallNormal.
LowRichAdvancedLeak
ShortLarge
Large wear
HighLeanRetardedHigh
resistance
Height
HighLargeLarge wearHighLeanRetardedHigh
resistance
LowSmallNormal
Low
Rich _AdvancedLeak
SlopeLargePlug is fouled
-
Point B: Number of vibrations in reduction vibration section (Refer to abnormal wave-form example 5)
Point C: Number of vibrations at beginning of dwell section (Refer to abnormal wave-form example 5)
Point D: Ignition voltage height (distribution per each cylinder) shows the following trends.
Ignition
voltagePlug gapCondition of CompressionConcentration
electrodeIgnition timing Spark
forceof air mixtureplugcable
HighLarge
Large wearHighLean
RetardedHigh
resistance
LowSmallNormal
LowRich
AdvancedLeak
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Downloaded from www.Manualslib.com manuals search engine ENGINE ELECTRICAL - Ignition System16-43
Wave-form Observation Points/
LPoint A: The height, length and slope of the spark line (refer to abnormal wave-form examples 1, 2, 3and 4) show the following trends.
Spark linePlug gapCondition of CompressionConcentra-Ignition timing High tension
electrodeforcetion of air mix-cable
tureLength Long
SmallNormalLowRichAdvanced
Leak
Short
LargeLarge wearHighLeanRetardedHigh
resistanceHeight High
LargeLarge wearHighLeanRetardedHigh
resistance
LowSmall
NormalLowRichAdvancedLeak
SlopeLargePlug is fouled-
Point B: Number of vibrations in reduction vibration section
(Refer to abnormal wave-form example 5)
Number of vibrationsCoil and condenser
I3 or higher/ Normal
Except aboveAbnormal
Point C: Height of Zener voltage
Height of Zener voltageProbable cause
HigherProblem in Zener diode
LowerAbnormal resistance in pri-
mary coil circuit
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player54-173C. CASSETTE PLAYER
C-lCassette tape will not be inserted.Are there any foreign objects in the cassette player?/NoRemove the object(s)”
“1Attempting to force a foreign object (e g.. a coin or clip, etc.) out
of the cassette player may damage the mechanism. The player
should be taken to a service dealer for repair.
Does the cassette player work if another tape is inserted?
NoReplace tape
**
*2Ensure that the tape label is not that the tape itself tape of C-120
or greater length often get caught in the mechanism and should
not be used.
Repair or replace cassette player.
C-2No sound (even after a tape has been inserted).Is multi-purpose fuse No. 4 blown or is the circuit open?
NoYes
- Replace fuse or repair harness.
+Is connector at rear of radio connected tightly?
YesNo
- Connect connector firmly.
Disconnect connector at rear of radio. Is ACC power being supplied to the
yesPW Repair or replace caSSette player.
radio?
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player54-175c-4
Sound quality is poor, or sound is weak.
Yes
,/lEnsure that the tape label is not loose, that the tape itself is not
deformed and that the tape is tightly wound.
l
Tapes of C-i 20 or greater length often get caught in the mechanismand should not be used.
Yes
No
ccl
tIs proper operation obtained when thecaYes/No
1 Repair or replace speaker.1c-5
Cassette tape will not be ejected.
The problems covered here are all the result of the use of a bad tape (deformed or not properly tightened)
or of a malfunction of the cassette player itself. Malfunctions involving the tape becoming caught in themechanism and ruining the case are also possible, and attempting to force the tape out of the player
can cause damage to the mechanism. The player should be taken to a service dealer for repair.
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Downloaded from www.Manualslib.com manuals search engine 54-176CHASSIS ELECTRICAL - Radio and Tape Player
C-6Uneven revolution. Tape speed is fast or slow.
NoYesAre there any foreign objects inside the cassette player?
Remove foreign object(s).
No
Is the head or capstan roller dirty?
I-
Z16AO668
No
j Reoair or replace cassette olaver.
Yes
C-7Automatic search does not work.IDoes the MSS (automatic search) button” depress properly?
YesButton improperly operated.
1Yesc Tape used is bad.
Nol l
lWhen the time between songs on a tape is less than three seconds,or when there is a three second period in the middle of a song in
which the volume level is extremely low, the automatic search function
*2may not work properly.
lEnsure that the tape label is not loose, that the tape itself is not deformedand that the tape is tightly wound. Also, tapes of C-120 or greater
length often get caught in the mechanism and should not be used.
t1 Repair or replace the cassette player.
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Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Radio and Tape Player54-177
C-8Faulty auto reverse.
-1 Yes
Does the player play OK if the tape is changed?I*mNo
lEnsure that the tape label is not loose, that the tape itself is not deformedand that the tape is tightly wound.
l Tapes of C-120 or greater length often get caught in the mechanism
and should not be used.
1No
,1
Yes
+vreplaceIs the cassette player properly installed to the vehicle?,
No
Yes*/I
1Repair or replace cassette player.
C-9Tape gets caught in mechanism*‘.I
l lWhen the tape is caught in the mechanism, the case may not eject. When this occurs,
do not try to force the tape out as this may damage the tape player mechanism. Take
the cassette to a service dealer for repair.
Does the player play OK if the tape’2 is changed?
No
l 2Tape used is bad.
Ensure that the tape label is not loose, that the tape itself is not deformedand that the tape is tightly wound. Also, tapes of C-120 or greater length
often get caught in the mechanism and should not be used.
Repair or replace cassette player.
i
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