1991 MITSUBISHI 3000GT fog light

13-86FUEL SYSTEM - On-vehicle Inspection of MPI Components
ELECTRICAL LOAD SWITCH16FO29;
Tail-lightrelayDefog.wrelaystoplight
t;1
switch
ti* . .
Engine control unit connector
Engine
control
unit7FUO653
7FUO688OPERATION
lThe electrical load switch inputs ON/OFF state of the switch of equipment that consumes much powerduring idling, namely, equipment with a large electrical load, to the engine control unit. Based on this
signal, the engine control unit controls the idle-speed control servo.
l
When the switch of equipment with a large electrical load is turned ON, the battery voltage is applied tothe engine control unit to indicate that the equipment switch is turned ON.,
LJINSPECTION
Using Multi-use Tester
Function
Data reading
I
tem No. Data display
-I-
33Switchstate
Check condition
Equipment stateNormal display
$;ration of equipment:L$ing;Atch only:OFF + ON-3
1 TSB Revision

FUEL SYSTEM - On-vehicle InsDection of MPI ComDonents
/
idHARNESS INSPECTION
Engine control
unit harness
side connector7FUO689
side connector7FuO689
PU
Engine control
unit harness
side connectorT7FUO689
Measure the input voltage of engineIcontrol unit.
lEngine control unit connector:
Disconnectedl Lighting switch: ON
(Tail light relay ON)
Measure the input voltage of enginecontrol unit.
lEngine control unit connector:
Disconnectedl Defogger switch: ON
(Defogger relay ON)Voltage
(V)
Isv
cl3
Check circuit
related to de-
fogger relay
Measure the input voltage of enginecontrol unit.
lEngine control unit connector:
Disconnected
l Brake pedal: Depressed(Stop light switch ON)
Check circuitTSB Revision

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.
TSB Revision