1991 MITSUBISHI 3000GT Service Manual

EXTERIOR - Troubleshooting51-7
LOPERATION

l When the wiper switch is placed in the LO
position with the ignition switch in the ACC or
ON position, wipers operate continuously at low
speed.
l Placing the wiper switch in the HI position
causes the wipers to operate at high speed.

l When the wiper switch is placed in the OFF
position, the cam contacts of wiper motor
causes current to flow through the auto wiper
stop circuit, allowing the wiper blades to cycle
before they reach to the stop positions.

l When the washer switch is placed in the ON
position with the ignition switch in the ACC or
ON position, washers operate.
REAR WIPER AND WASHER
OPERATION

/l
i,When the rear wiper switch is placed in the ON
position with the ignition switch in the ACC or
ON position, wipers operate continuously at low
speed.

lWhen the rear wiper switch is placed in the OFF
position, the cam contacts of wiper motor
causes current to flow through the auto wiper
stop circuit, allowing the wiper blades to cycle
before they reach to the stop positions.

lWhen the rear wiper switch is placed in the
INTposition with the ignition switch in ACC or ON
position, the rear intermittent wiper relay is
energized causing the rear intermittent wiper
relay contacts to close and open repeatedly.
lWhen the contacts are closed, the wiper motor
is energized.
lWhen the rear wiper motor is energized, the rear
intermittent wiper relay contacts open; howev-
er, the cam contacts keep the rear wiper motor
energized until the wiper blades return to their
stop position.
LTROUBLESHOOTING HINTS
1. Wipers do not operate.
(1) Washer is not operative, either.
l Check multi-purpose fuse No.
0.l Check ground.
2.Low-speed (or high-speed) wiper operation only
is inoperative.
l Check wiper switch.
3. Wipers do not stop.
l
.Check wiper motor.
l Check intermittent wiper relay.
l Check wiper switch.
4. Washer is inoperative.
l Check washer motor.
l Check washer switch.
NOTEFor information concerning the ETACS control unit,
refer to
P.51-24.TROUBLESHOOTING HINTS
1. Wipers do not operate.
(1) Washer is not operative, either.
l Check multi-purpose fuse No.
@.l Check ground.
2. Low-speed wiper operation only is inoperative.
l Check wiper switch.
3. Wipers do not stop.
l Check wiper motor.
l Check rear intermittent wiper relay.
l Check rear wiper switch.
4. Intermittent wiper operation is inoperative.
lCheck terminal voltage of the rear intermit-
tent wiper relay energized.
(Refer to
P.51-34 for information concerning
the installation position of the intermittent
wiper relay.)
TerminalNo.Voltage
I
Check
2OVRear intermittent wiper
relay or rear wiper switch12v
Rear intermittent wiperrelay0 f-, 12v
-(Normal)(alternating)5. Washer is inoperative.
l Check washer motor.
l Check washer switch
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51-8
EXTERIOR - Troubleshooting
CIRCUIT DIAGRAM
IGNITION IiITCH(ACC)TAILLIC
3
I
F0.
REAR0
INTERMITTENTc15A
IWIPER RELAYI
E-1836
1417
16_----_-----_-- ----__
CL
t1
3
23J&m
0;
3
%x4/X7/\/\
I~
I
I
I
I
I~
I
I
‘4 i
T RELAY
C-82
1
DEDICATEDFUSE
0.85Ld
3 C-69
1
J/Bii+m
d1
8 C-71
L
ii?m
d
8 D-44
3
REAR
LmFi/ILL6
80
I
iim
6 O.------
5
,,8
D-42
-1
RHEOSTAT
2
REAR
iii%~~R
F-15 F-34pLi%Fq2 D-41
idm
d
I
1m
I
REAR
WIPER
MOTOR
F-03
w123
b5-AC-RlJOE-NYTSB Revision

EXTERIOR - Troubleshooting
i.l
L
ELECTRIC REMOTE CONTROLLED MIRRORMSlEBBFCIRCUIT DIAGRAM
BEI
LLIfs
9LF?
PWATED
1
@iOA
w&
:ERIGNITIONSWITCH(ACC)-I
d
4
J/B
@ ::::15A
9
C-82
m
$i$iiq
:I1I’II
,IIIIIIII
IttI
1II,I
IIII
IIIt,
---------------------2 2
f
D-42
'-14
7
83296m9
-?;'9:c:a > c3> u,
REMOTEfjI#;"o;LLE'
EFti
tIL-------------q+1~-I~---------------------)L13w
.D-43 ‘1'8--- ---- ------------------ +’'7at2 D-41
/liRmqtI.) El::
:
1
(LH)(RH)
REMOTEiy;;I$)LLED:l:VEHICLES WITH MIRROR HEATERKXS-AC-R13C3-NYX2:VEHICLES WITHOUT MIRROR HEATEFOPERATION
l When the remote controlled mirror switch is
operated while the ignition key is in “ACC” or
“ON” position, current flows through fuse No.@ remote controlled mirror switch, remote
controlled mirror,remote controlled mirror
switch, and ground, causing the mirror to move.TROUBLESHOOTING HINTS
Neither right nor left mirror operates
1) Also cigarette lighter does not operate
l Check multi-purpose fuse No.
0.2) Cigarette lighter operates
l Check remote controlled mirror switch.
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51-10EXTERIOR - Service Adjustment Procedures
68FOO51
Multl-use tester
,SERVICE ADJUSTMENT PROCEDURES
INSPECTION OF ACTIVE AERO SYSTEM
1. INSPECTION BY WARNING LIGHT
d!Turn the ignition switch from “OFF” to “ON” to see if the
warning light is lit for approx. three seconds and then goes
out. If not, replace the control unit.
NOTE
(1) The active aero control unit has a self-check function
which is designed as follows: Turn the ignition switch
from “OFF” to “ON”. If the unit is in normal condition,
the warning light is lit for approx. three seconds and
then goes out.
(2) If the front venturi skirt does not return to the standard
condition properly in normal use, the warning light
comes on
2. INSPECTION BY ACTIVE AERO SWITCH AT AUTO 2
(1) With the vehicle stopped, insert the key in the ignition
key cylinder.
(2) Set the active aero switch to AUTO 2 to make sure that
the active aero system is placed in the operative
condition and the indicator light comes on. Then turn off
the active aero switch to confirm that the system
LCJreturns to the standard condition and the indicator light
goes out.
(3) If there is abnormality, check the following parts.
l Active aero switch
l Lighting monitor switch
l Air dam link assembly and rear spoiler
l Wiring harness
3. INSPECTION WITH MULTI-USE TESTER
Using pseudo vehicle speed input function of the multi-use
tester, inspection can be made by means of vehicle speed.
(1) Set the multi-use tester to the diagnosis connector.
(2) Turn the ignition switch to “ACC” or “ON”.
(3) Place the active aero switch to AUTO 1.
(4) Using the multi-use tester, increase the vehicle speed
to approx. 80 km/h (50 mph) or more to make sure that
the active aero system is placed to the operative
condition. Then decrease the vehicle speed to approx.
50 km/h (30 mph) or less to confirm that the system
returns to the standard condition.
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/
iEXTERIOR
- Front Bumper51-11
We A
Installation
Grommet
Screw
Me B
Removal
Screw
t
10NOl8718N0185
installation
t18N018818N0184
FRONT BUMPERM51ZAAW
REMOVAL AND INSTALLATION OF CLIP WITH
SCREW
Normally, remove the clip with a Phillips screwdriver. If,
however, there is enough space to insert a screwdriver or the
like behind the clip, use the following procedure for ease of
work.
1. Removal
Using a screwdriver or the like, press the screw from the
inside of the bumper to remove the clip.
2. Installation
With the grommet inserted in the hole, press the screw in.
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I’
L

51-12EXTERIOR - Front BummerIREMOVAL
,AND INSTALLATION
9 active aero system>
F IL
d.94Lag
.d,
;3
\Removal steps
1. Front under cover side panel
2. Front under cover center panel
3. Side cover panel
4. Front cover panel
5. Center cover panel
I)*6. Front under cover panel
7. Front splash shield extension
8. Fog light
9. License plate bracket active aero system>
7i(Vehicles without
active aero system)
(Vehicles with
active aero system)
10. Front combination light
11. Optical horn lens
12. Clips with screw
13. Tapping screws
14. Bolts;
51: Bu;per face assembly
17. Bumper reinforcement assembly
SERVICE POINT OF INSTALLATION
6. INSTALLATION OF FRONT UNDER COVER PANEL
Install the air dam link assembly in the operative condition
for ease of front under cover panel.
ITSB Revision

EXTERIOR - Front Bumper51-13DISASSEMBLY AND REASSEMBLY
22 Nm16 ftlbs.
Bumper face disassembly steps
1. Bumper face side plate
2. Bumper face corner plate
3. Bumper face upper front plate
4. Bumper face upper center plate
5. Bumper face protector
6. Side lower plate
7. Center lower plate
8. Bumper faceBumper reinforcement disassembly steps
9. Fog light bracket
** l * IO. Bumper absorber
11. Bumper reinforcement stay
12. License plate bracket support
13. Bumper reinforcement
SERVICE POINT OF DISASSEMBLY
10. REMOVAL OF BUMPER ABSORBER
Caution
1. Do not attempt to repair a bumper absorber that
has been compressed in an accident; replace it with
a new one.
2.Before discarding the bumper absorber, drill a 3 mm(.13 in.) diameter hole to discharge the gas con-
tained in the unit. Be sure to wear safety goggles
while performing this operation as the gas is not
harmful but chips may be ejected with it.
3. If the bumper absorber is to be discarded, do not
burn it.
SERVICE POINT OF REASSEMBLY
10. INSTALLATION OF BUMPER ABSORBER
If the squareness between the bumper reinforcement stay
and the bumper absorber is improper, adjust it by putting a
spacer between them.
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EXTERIOR - Rear Bumper
ScrewGrommet
Screw
t
REAR BUMPERMllZAAXREMOVAL AND INSTALLATION OF CLIP WITH
SCREW
Normally, remove the clip with a Phillips screwdriver. If,
however, there is enough space to insert a screwdriver or the
like behind the clip, use the following procedure for ease of
work.
1. Removal
Using a screwdriver or the like, press the screw from the
inside of the bumper to remove the clip.
2. Installation
With the grommet inserted in the hole, press the screw in.
REMOVAL. AND INSTALLATION
/Pre-removal and Post-installationOperationlRemoval and Installation of RearRemovalsteps
ECS control unit (Refer
to GROUP 33B - ECSControl Unit.)
1. Rear combination light
2. Rear panel garnish3. Bolts
4. License plate light
5. Clips with screw
6. Nuts
7. Tapping screws
8. Bolts9. Bumper face upper plate
10. Bumper face assembly
11. Rear bumper upper extension
12. Rear bumper harness connector
LA’13. Nuts
14. Bumper reinforcement assembly
I
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I
I
I
I
I
I
Ld;
I1
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