1991 MITSUBISHI 3000GT battery

13-140FUEL SYSTEM - On-vehicle Inspection of MPI Components
(14)Stop the engine and check for a change of the value
indicated by the fuel pressure gauge. The condition is
normal if there is no decrease of the indicated value within~
two minutes.
,If there is a decrease of the indicated value, monitor the
:d ’speed of the decrease, and, referring to the table below,
determine the cause of the problem and make the
appropriate repair.
Condition
After the engine is stopped, thefuel pressure drops gradually.Probable cause
Injector leakage.
Leakage at the fuel pressure
regulator valve seat.Remedy
Replace the injector.
Replace the fuel pressure regulator.
There is a sudden sharp drop of
the fuel pressure immediately
after the engine is stopped.The check valve (within the fuelpump) is not closed.Replace the fuel pump.
(15)Remove all remaining pressure from inside the fuel pipe.(16)Disconnect the fuel pressure gauge and the special tool
from the delivery pipe.
CautionBecause there will be.a slight amount of remaining
pressure in the fuel pipe line, use rags to cover so thatfuel doesn’t splatter.
(17)Replace the O-ring at the end of the fuel high-pressure hose
with a new one.(I 8)After connecting the fuel high-pressure hose to the delivery
pipe, tighten the installation bolt at the specified torque.
dTightening torque: 5.0 Nm (3.6 ftlbs.)
(19)Check to be sure that there is no fuel leakage.@ Apply battery voltage to the terminal for activation of
the fuel pump so as to activate the fuel pump.@ With fuel pressure applied, check for leakage of the fuel
line.
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FUEL SYSTEM- Fuel Line and Vapor Line13451FUEL
LINE AND VAPOR LINEMlBKA-~
iREMOVAL AND INSTALLATION
i30 Nm
6

Removal steps
1, Reserve tank2. Battery
3. Battery tray with washer tank assembly
4. Purge control valve
M 5. Fuelvapor hose6. Canister
7. Vapor pipe assembly
l +8. Fuel return hosea*9. Eye bolt10. Gasket11. High pressure fuel pipel a 12. Fuel filter*I,13. Eye bolt
14. Gasket
l * 15. High pressure fuel hose
16. O-ring
w 17. Fuel vapor hose
18. Stone protector
19. Fuel vapor pipe20. Fuel return pipe
21. Fuel main pipe
Deli\rerye
i603N0012
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FUEL SYSTEM - Fuel Filter13453
FUEL FILTERM13VA-.
/REMOVAL AND INSTALLATION
i&J
L
/Il Removal of Residual Pressure from
Post-installation Operation
l Checking for Fuel Leakage
Removal steps
1. Battery
2. Battery tray with washer tank assembly
3. Eye bolt4. Gasket
5. High pressure fuel hose
6. Connection of fuel main
pipe7. Mounting boltl *8. Fuel filterl *9. Eye bolt10. Gasket11. High pressure fuel pipe
l---
222 ft.lbs.03FOO12
Gasket
fuel pipe
&----Eye bo’t 03FOO13SERVICE POINTS OF REMOVAL
MlSVBAB3. 9. REMOVAL OF EYE BOLT
Remove the eye bolt while holding the fuel filter nut
securely.
Caution
Cover the hose connection with
rags to prevent splash
of fuel that could be caused by some residual pressurein the fuel pipe line.
SERVICE POINT OF INSTALLATION
M13VBAB8. INSTALLATION OF FUEL FILTER
(1) When installing the fuel filter, first temporarily install the
filter to the filter bracket; then insert the main pipe at
the connector part of the high pressure fuel pipe, and
manually screw in the main pipe’s flare nut.
(2) Holding the fuel filter nut, tighten the fuel main pipe’s
flare nut and eye bolt at the specified torque. Then
tighten the filter to the bracket.
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13-172CRUISE CONTROL SYSTEM - Troubleshooting
SELF-DIAGNOSIS CHECKING
Self-diagnosis checking is performed when there has been an
automatic cancellation without cancel switch operation.
‘1 ’
NOTE‘LAEven when the ignition key is placed in the OFF position, all
diagnosis codes are stored and retained, until the battery cable
is disconnected, to make sure that the problems encountered
in the past can be checked.
Control switch
1 RESUME
itch: ON
t
4SET switch:
ON
07FOO17
-\16FO2461
WITH MULTI-USE TESTER(1) Read the self-diagnosis code.
(2) Refer to the diagnosis chart and repair the defective point.
(3) Clear the self-diagnosis codes by the following procedure.@ Place the ignition switch in the ON position.@ With the SET switch in the ON state, set the main
switch to ON. In less than 1
.O second thereafter, set the
RESUME switch to ON.@ With the SET switch in the ON state again, keep the
’stop light switch in the ON state for more than 5dseconds.@ Check the self-diagnosis code to verify that a normal
code is output.
WITH VOLTMETER
(1) Connect an analog voltmeter across the self-diagnosis
output terminal and ground terminal of the diagnosis
connector.
(2) Place the ignition switch and main switch in the ON
position.
(3) Read the self-diagnosis code on the basis of the deflection
of the pointer of the voltmeter.
(4) Refer to the diagnosis chart and repair the defective point.
(5) Clear the self-diagnosis codes in the same way as when a
multi-use tester is used.
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‘CRUISE CONTROL SYSTEM - Service Adjustment Procedures13-181
Control switch
07FOO17
\\ \18FO22;
07FOOlO6 1 4
ILL: Illumination light
I
07FOO13
(3) With the vehicle at a speed of more than about 40 km/h (25
mph), check that when the control switch is moved upward
(RESUME switch: ON), the vehicle resumes cruising at the
speed held before cancellation of the cruise control mode.
(4) In the cruise control mode, check that when the main
switch is set to OFF, the normal drive mode is restored and
the vehicle coasts smoothly.
INDIVIDUAL PARTS INSPECTION
M13FEA
CRUISE CONTROL MAIN SWITCH INSPECTION
(I) Remove the main switch together with the switch garnish.
(2) Remove the main switch from the switch garnish.
(3) Operate the main switch and check for continuity across
the individual terminals.
ILL 2 3 4 5
Press OFF.
Neutral positionPress ON.000A
0
NOTE(I 1O-O denotes continuity across the terminals.(2) ILL: Illumination light
(4) Connect a positive lead from the battery to terminal @ and
a negative lead from the battery to terminal @ and check
that battery voltage is available across terminal @ and the
ground during the period the ON side of the main switch is
pressed and during the period before the OFF side is
pressed thereafter.
Check that when the OFF side of the main switch is
pressed thereafter, the battery voltage available across
terminal @ and the ground is reduced to 0 V.
07FOOll
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13-182CRUISE CONTROL SYSTEM - Service Adjustment ProceduresI
CRUISE CONTROL SWITCH INSPECTION(1) Remove the air bag module using the following procedure.I07FOO12
07NOOl@ Remove the negative terminal of the battery and wait
for more than 30 seconds.
d
CautionThe capacitor in the SRS diagnosis unit retains
enough voltage to deploy the air bag for a given
period even after disconnection of the battery. If anoperation is performed during that given period,
unintended deployment of the air bag could result
and cause serious injury.@Remove the air bag module. To remove the clock spring
connector
(squib connector) from the air bag module,
force the lock outward and pry it with a plain screwdriv-
er as shown at left so that no undue force will be
exerted on the connector when it is removed.@ The removed air bag module should be stored in a
clean, dry, flat place with the pad side up.
(2) Disconnect the connector of the control switch and operate
the control switch to measure the resistance between the
individual terminals.
If the readings are as shown below, the control switch may
be considered good.
Switch operationResistance between-iJ
terminals
When switch is not operated
When switch is operated toward you
(CANCEL switch: ON)
When switch is operated upward
(RESUME switch: ON)
When switch is operated downward
(SET switch: ON)No continuity
Approx. 0
1RApprox. 820
1RApprox. 2,700
fi
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13-184CRUISE CONTROL SYSTEM - Service Adjustment Procedures
07AOO51
07A005t07A005i
THROlTLE POSITION SENSOR INSPECTIONFor inspection, refer to
P.13-65.
IDLE POSITION SWITCH INSPECTIONFor inspection, refer to
P.13-68.VACUUM PUMP INSPECTION
Inspection of Solenoid Valves (Control and Relief Valves)(1) Disconnect the connector of the vacuum pump assembly.
(2) Measure the resistance values across terminals @ and @
and across terminals @ and
0.Standard value: 50
- 60 R
(3) Check that when the battery voltage is applied across
terminals @ and @ and across terminals @ and
0, the
operating sounds of the solenoid valves are heard.
(4) If the solenoid valves are defective, replace the vacuum
pump assembly.
Inspection of Motor
(1) Disconnect the connector of the vacuum pump assembly.
(2) Check that when the battery voltage is applied across
terminals @ and
@, the motor operates.
ACTUATOR INSPECTION(1) Remove the actuator.
(2) Using a vacuum pump, apply a negative pressure to the
actuator to check that the holder portion moves more than
35 mm (1.4 in.). Retain the negative pressure in that state to
check that the holder portion does not change its position.
(3) After the actuator has been mounted, check and adjust the
cruise control cable. (Refer to
P.13-178.)
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CRUISE CONTROL SYSTEM - Cruise Control Svstem13-187Vacuum hoseSERVICE POINT OF REMOVAL
Ml3lDBG20. REMOVAL OF AIR BAG MODULE
(1) Remove the negative terminal of the battery and wait
for more than 30 seconds.
CautionThe capacitor in the SRS diagnosis unit retains
enough voltage to deploy the air bag for a given
period even after disconnection of the battery. If anoperation is performed during that given period,
unintended deployment of the air bag could result
and cause serious injury.(2) Remove the air bag module. To remove the clock spring
connector (squib connector) from the air bag module,
force the lock outward and pry it with a plain screwdriv-
er as shown at left so that no undue force will be
exerted on the connector when it is removed.
(3) The removed air bag module should be stored in a
clean, dry, flat place with the pad side up.
INSPECTION
MlJTDCFl Check the inner and outer cable for damage.
l Check the cable for smooth movement.
l Check the link protector for damage.
INSPECTION OF INDIVIDUAL PARTSRefer to Service Adjustment Procedures
- Individual Parts
inspection (P.l3-181).
SERVICE POINT OF INSTALLATION
M13TDDF
6.CONNECTION OF VACUUM HOSE TO VACUUM PUMPRoute the vacuum hose over the throttle cable and connect
the hose to the vacuum pump so as to prevent the
slackened hose from interfering with other parts.
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