1994 MITSUBISHI 3000GT Workshop Manual

Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Rear Window Defogger
X16FO354
1 TSB Revision

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

Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Theft-alarm Svstem
TROUBLESHOOTING(UP TO 1993 MODELS)
CIRCUIT DIAGRAM
HEADLIGHT
RELAY
0---------_
IGNITIONIGNITIONSWITCH(IG1)SW1 TCH(ACC)
63
10A
0
15A
c-77)16(c-80)
0.85, B-W
FJ$
B-W
----------1
xSOCI
0.85L
L
Lt
2R-L12R-L1(R.2
’ I
R-B
L
8
3520 53,\---------__ --------__
\II
1"2 /2R ;I----- --A3‘3
1.25R
0
1.25R
3_----,,6
1625R,8,C
I---.*HI
Y
+
LI
E
-B
1A
0.85R-W
(c-01)
0.85R-W
jLIGHTAUTOMATIC 0SHUT-OFF
UNIT
.----------------------
lO(c-65) ETACS UNITI
- -
E54#
G#~O L[r
R-c
R-c
nr-
- -
(LH)(RH)
DOOR TWITCH
;zk77)(c-80)(c-82) (E-15)(m) (E-21)
gj 1~~~~~~~~~
HR15MOOAA
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iCHASSIS ELECTRICAL
- Theft-alarm Svstem54-207 ~
FUSIB ELINK 6b
5W-B
,.l (c-68)
/J/B
@
15AVV
(c-70,“1---“2(c-83)
RR-YIR-1
,,l,,2I\
J,
.lOR-B ‘10(c-77)
R-E
ik
IIIOD ORSTORAGE
CONNECTOR
(A-11x)
----i
B l6
L----i<
B5
2B
d
HRlSMOOAB
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Downloaded from www.Manualslib.com manuals search engine 54-208CHASSIS ELECTRICAL - Theft-alarm System
CIRCUIT DIAGRAM (CONTINUED)
LIGHT
AUTOMATIC
SHUT-OFF UNIT IGNITIONKEY
SW ITCH(ST)I#$!;'"
2B-Y0B-YyM/TA/T,
2B-Y
(c-31) v2LM/T "
t
A/T
2B-Y
,4may1j---1 1 j
L.mI.b ------____--___ - ------ - ----- -- ---- --$V??ER/
r77

OFi-,,ON/I\,/
2B-Y 2\G-B
(A-67) 2(3,J---_II ,-rn /TIM/T *A/Ta
I
G-E3
(1992 MODEL> *cl993 MODEL>
t
G-Er\3 ;
,
3LG-BG-B 3I
SE"
/\
POSITIONN SWITCHOFF-,:ONl(c-64)
6'1
LG-E
B-LY-
\A/T *
I
M/T
1
I
xm-STARTER
RELAY
l(c-56)t8E
L-2%13q 1 ‘-:liq2E
GNDV
2B
HR15MOOBAI
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