1900 MITSUBISHI DIAMANTE brake

DRIVEABILITYAND EMISSIONS CONTROLS 4-3
895?4Q3:
Fig. 6 Tvoical evaoorative emission control system schematic
EVAPORATIVE EMISSION CANISTER
Fig. 7 Evaporative emission canister com-
monly used on most models
in this section. Normal testing procedures can be
used, see EVAP System Component Testing in this
Section.
COMPONENTTESTING
89574g21 Fig. 8 To test the purge control operation,
connect the vacuum hose from the throttle
body to a vacuum pump
have elapsed after starting vehicle. Apply 14.8 in. Hg
of vacuum. The vacuum should be maintained mo-
mentarily, after which it should leak.
*The vacuum will leak continuously if the
altitude is 7,200 ft. or higher, or the intake
air temperature is 122°F (50°C) or higher.
Purge Control System Check
lB!M-93 VEHKLES EXCEPT 39911-92 2.UL
DDHC TURBO
p See Figure 8
1. Disconnect the red striped vacuum hose from
the throttle body and connect it to a hand held vac-
uum pump.
2. Plug the open nipple on the throttle body.
3. Using the hand pump, apply vacuum while the
engine is idling. Check that vacuum is maintained or
released as outlined below:
a. With the enaine coolant at 140°F f6O”C) or
less-14.8 in Hgof vacuum IS maintained. ’
b. With the coolant at 158°F (70°C) or
higher-14.8 in. Hg of vacuum is maintained.
4. With the engine coolant at 158°F (70°C) or
higher, run the engine at 3000 rpm within 3 minutes
of starting vehicle. Try to apply vacuum using the
hand held pump. Vacuum should leak.
5. With the engine coolant at 158°F (70°C) or
higher, run the engine at 3000 rpm after 3 minutes 6. If the test results differ from the desired results,
the purge control system is not operating properly.
199042 2.OL DDHC TURBO ENGINES
1, Disconnect the purge air hose from the intake
hose and plug the air intake hose.
2. Connect a hand vacuum pump to the purge air
hose.
3. Under various engine condrtions, inspect the
system operation:
a. Allow the engine to cool to a temperature
of 140°F (60°C) or below.
b. Start the engine and run at idle.
c. Using the hand pump, apply 14.8 in. Hg of
vacuum. In this condition, the vacuum should be
maintained.
d. Raise the engine speed to 3000 rpm.
e. Using the hand pump, apply 14.8 in. Hg of
vacuum. In this condition, the vacuum should be
maintained.
4. Run the engine until the coolant temperature
reaches 158°F (70°C). Inspect system operations as
follows: a. Using the hand pump, apply 14.8 in. Hg of
vacuum with the engine at idle. In this condition,
vacuum should be maintained.
b. Increase the enaine soeed to 3000 rpm
within 3 minutes of st&ting’the engine. Try ap-
plying vacuum. The vacuum should leak.
c. After 3 minutes have elapsed after starting
engine, raise the engine speed to 3000 rpm. Ap-
ply 14.8 in. Hg of vacuum. Vacuum should be
maintained momentarily, after which it will leak.
*The vacuum will leak continuously if the
altitude is 7200 ft. or higher or the air tem-
perature is 122°F (50°C) or higher.
5. If the results of either test differs from specifi-
cations, the system is not functioning
will require further diagnosis. properly and
1994-00 VEHICLES
p See Figure 9
*This test requires the use of a special
purge flow indicator tool, M8991700, or
equivalent.
1. Disconnect the purge hose from the EVAP can-
ister, then connect Purge Flow Indicator MB991700,
or equivalent between the canister and the purge
hose.
2. The engine should be warmed up to operating
temperature, 170-203°F. (80-95X), with all Irghts,
fans and accessories off. The transaxle should be in
Park for automatics or Neutral for manuals.
3. Run the engine at idle for at least 3-4 minutes.
4. Check the purge flow volume when the brake
is depressed suddenly a few times. The reading
should be 2.5 SCFH (20cmlsec.)
5. If the volume is less than the standard value,
check it again with the vacuum hose disconnected
from the canister. If the purge flow volume is less
than the standard, check for blockages in the vacuum
port and vacuum hose, and also inspect the evapora-
tive emission purge solenord and purge control
valve.

DRIVEABILITYAND EMISSIONSCONTROL-S 4-31
PO466 Purge Flow Sensor Circuit High Input
PO469 Purqe Flow Sensor Circuit Intermittent
PO470 Exhaust Pressure Sensor Malfunction
PO471 Exhaust Pressure Sensor Range/Perfor-
mance
PO472 Exhaust Pressure Sensor Low
PO473 Exhaust Pressure Sensor Hiah
PO474 Exhaust Pressure Sensor lnirmittent
PO475 Exhaust Pressure Control Valve Malfunc-
tion
PO476 Exhaust Pressure Control Valve
Range/Performance
PO477 Exhaust Pressure Control Valve Low
PO476 Exhaust Pressure Control Valve High
PO479 Exhaust Pressure Control Valve Intermit-
tent
PO460 Cooling Fan no 1 Control Circuit Mal-
function
PO461 Cooling Fan no. 2 Control Circuit Mal-
function
PO462 Cooling Fan no. 3 Control Circuit Mal-
function
PO463 Cooling Fan Rationality Check Malfunc-
tion
PO464 Cooling Fan Circuit Over Current
PO465 Cooling Fan Power/Ground Circuit Mal-
function
PO500 Vehicle Speed Sensor Malfunction
PO501 Vehicle Speed Sensor Range/Performance
PO502 Vehicle Speed Sensor Circuit Low Input
PO503 Vehicle Speed Sensor Intermittent/Er-
ratic/High
PO505 Idle Control System Malfunction
PO506 Idle Control System RPM Lower Than Ex-
pected
PO507 Idle Control System RPM Higher Than Ex-
pected
PO510 Closed Throttle Position Switch Malfunc-
tion
PO520 Engine Oil Pressure Sensor/Switch Circuit
Malfunction
PO521 Engine Oil Pressure Sensor/Switch
Range/Performance
PO522 Engine Oil Pressure Sensor/Switch Low
Voltage
PO523 Engine Oil Pressure Sensor/Switch High
Voltage
PO530 A/C Refrigerant Pressure Sensor Circuit
Malfunction
PO531 A/C Refrigerant Pressure Sensor Circuit
Range/Performance
PO532 A/C Refrigerant Pressure Sensor Circuit
Low Input
PO533 A/C Refrigerant Pressure Sensor Circuit
High Input
PO534 A/C Refrigerant Charge Loss
PO550 Power Steering Pressure Sensor Circuit
Malfunction
PO551 Power Steering Pressure Sensor Circuit
Range/Performance
PO552 Power Steering Pressure Sensor Circuit
Low Input
PO553 Power Steering Pressure Sensor Circuit
High Input
PO554 Power Steering Pressure Sensor Circiit
Intermittent
PO560 System Voltage Malfunction
PO561 System Voltage Unstable
PO562 System Voltage Low
PO563 Svstem Voltaoe Hlah
PO565 Ciuise Control On%ignal Malfunction
PO566 Cruise Control Off Signal Malfunction PO567 Cruise Control Resume Signal Malfunc-
tion
PO566 Cruise Control Set Signal Malfunction
PO569 Cruise Control Coast Signal Malfunction
PO570 Cruise Control Accel Signal Malfunction
PO571 Cruise Control/Brake Switch “A” Circuit
Malfunction
PO572 Cruise Control/Brake Switch “A” Circuit
Low
PO573 Cruise Control/Brake Switch “A” Circuit
High
P0574Through PO560 Reserved for Cruise
Codes
PO600 Serial Communication Link Malfunction
PO601 Internal Control Module Memory Check
Sum Error
PO602 Control Module Programming Error
PO603 Internal Control Module Keep Alive Mem-
ory (KAM) Error
PO604 Internal Control Module Random Access
Memory (RAM) Error
PO605 Internal Control Module Read Only Mem-
ory (ROM) Error
PO606 PCM Processor Fault
PO606 Control Module VSS Output “A” Malfunc-
tion
PO609 Control Module VSS Output “6” Malfunc-
tion
PO620 Generator Control Circuit Malfunction
PO621 Generator Lamp “L” Control Circuit Mal-
function
PO622 Generator Field “F” Control Circuit Mal-
function
PO650 Malfunction Indicator Lamp (MIL) Control
Circuit Malfunctron
PO654 Engine RPM Output Circuit Malfunction
PO655 Engine Hot Lamp Output Control Circuit
Malfunction
PO656 Fuel Level Output Circuit Malfunction
PO700 Transmission Control System Malfunction
PO701 Transmission Control System Range/Per-
formance
PO702 Transmission Control System Electrical
PO703 Torque Converter/Brake Switch “B” Circuit
Malfunction
PO704 Clutch Switch Input Circuit Malfunction
PO705 Transmission Range Sensor Circuit Mal-
function (PRNDL Input)
PO706 Transmission Range Sensor Circuit
Range/Performance
PO707 Transmission Range Sensor Circuit Low
Input
PO706 Transmission Range Sensor Circuit High
Input
PO709 Transmission Range Sensor Circuit Inter-
mittent
PO710 Transmission FluId Temperature Sensor
Circuit Malfunction
PO711 Transmission Fluid Temperature Sensor
Circuit Range/Performance
PO712 Transmission Fluid Temperature Sensor
Circuit Low Input
PO713 Transmission Fluid Temperature Sensor
Circuit High Input
PO714 Transmission Fluid Temperature Sensor
Circuit Intermittent
PO715 Input/Turbine Speed Sensor Circuit Mal-
function
PO716 Input/Turbine Speed Sensor Circuit
Range/Performance
PO717 InpWurbine Speed Sensor Circuit No
Signal PO716 Inputflurbine Speed Sensor Circuit Inter-
mittent
PO719 Torque Converter/Brake Switch “B” Circuit
Low
PO720 Output Speed Sensor Circuit Malfunction
PO721 Output Speed Sensor Circuit Range/Per-
formance
PO722 Output Speed Sensor Circuit No Signal
PO723 Output Speed Sensor Circuit Intermittent
PO724 Toraue Converter/Brake Switch “B” Circuit
High
PO725 Engine Speed Input Circuit Malfunction
PO726 Engine Speed Input Circuit Range/Perfor-
PO727 Engine Speed Input Circuit No Signal
PO726 Engine Speed Input Circuit Intermittent
PO730 Incorrect Gear Ratio
PO731 Gear no. 1 Incorrect Ratio
PO732 Gear no. 2 Incorrect Ratio
PO733 Gear no. 3 Incorrect Ratio
PO734 Gear no 4 Incorrect Ratio
PO735 Gear no. 5 Incorrect Ratio
PO736 Reverse Incorrect Ratio
PO740 Torque Converter Clutch Circuit Malfunc-
tion
PO741 Torque Converter Clutch Circuit Perfor-
mance or Stuck Off
PO742 Torque Converter Clutch Circuit Stuck On
PO743 Torque Converter Clutch Circuit Electrical
PO744 Torque Converter Clutch Circuit Intermit-
tent
PO745 Pressure Control Solenoid Malfunction
PO746 Pressure Control Solenoid Performance or
Stuck Off
PO747 Pressure Control Solenoid Stuck On
PO746 Pressure Control Solenoid Electrical
PO749 Pressure Control Solenoid Intermittent
PO750 Shift Solenoid “A” Malfunction
PO751 Shift Solenoid “A” Performance or Stuck
Off
PO752 Shift Solenoid “A” Stuck On
PO753 Shift Solenoid “A” Electrical
PO754 Shift Solenoid “A” Intermittent
PO755 Shift Solenoid “8 Malfunction
PO756 Shift Solenoid “B” Performance or Stuck
Oft
PO757 Shift Solenoid “B” Stuck On
PO756 Shift Solenoid “6” Electrical
PO759 Shift Solenoid “8” Intermittent
PO760 Shift Solenoid “C” Malfunction
PO761 Shift Solenoid “C” Performance Or Stuck
Oft
PO762 Shift Solenoid “C” Stuck On
PO763 Shift Solenoid “C” Electrical
PO764 Shift Solenoid “C” Intermittent
PO765 Shift Solenoid “D” Malfunction
PO766 Shift Solenoid “D” Performance Or Stuck
Oft
PO767 Shift Solenoid “D” Stuck On
PO766 Shift Solenoid “D” Electrical
PO769 Shift Solenoid “D” Intermittent
PO770 Shift Solenoid “E” Malfunction
PO771 Shift Solenoid “E” Performance Or Stuck
Off
PO772 Shift Solenoid “E” Stuck On
PO773 Shift Solenoid “E” Electrical
PO774 Shift Solenoid “E” Intermittent
PO760 Shift Malfunction
PO761 l-2 Shift Malfunction
PO762 2-3 Shift Malfunction
PO763 3-4 Shift Malfunction
PO764 4-5 Shift Malfunction

.
4-34 DRIVEABILITYAND EMISSIONS CONTROLS
Open circuit in damper clutch con-
trol solenoid valve
Short circuit in damper clutch con-
trol solenoid valve
Defect in the damper clutch sys- o Inspection of solenoid valve
connector
o Individual inspection of damper
clutch control solenoid valve
o Check the damper clutch control
solenoid valve wiring harness
o Chck the TCM
o Inspection of damper clutch hy-
draulic system
PO732 Shifting to first gear does not heckthe pulse generator A and
match the engine speed pulse generator B connector
o Check the pulse generator A and
Shifting to second gear does puls generator B
not match the engine speed o Checkthe one way clutch or rear
clutch
o Check the pulse generator wir-
ing harness
ASATAOSC o Kickdown brake slippage
PO733 Shifting to third gear does not o Check the rear clutch or control
match the engine speed system
o Check the pulse generator A and
pulse generator B connector
o Check the pulse generator A and
pulse generator B
o Checkthe pulse generatorwiring
harness
o Check the rear clutch slippage or
control system
A5ATA05D o Check the front clutch slippage
or control system
PO734
Shifting to fourth geardoes not match o Check the pulse generator A
the engine speed and B connector
o Check the pulse generator A
and B
o Kickdown brake slippage
o Check the end clutch or control
system
o Check the pulse generator wir-
ASATA05E ing harness
Normal
J
89446 :ig. 95 Mitsubishi flash out DTC’s, 3 of 4-Type 4 (OBD II) Codes

FUELSYSTiM 5-13
1. BODY HARNESS CONNECTION
2 HOSE CONNECTION
3 PURGE HOSE
4 VAPOR HOSE
5 VENT HOSE
6 FllLER HOSE
7 PIPE ASSEMBLY
8. BAND ASSEMBLY
9 FUEL TANK ASSEMBLY
10. DIFFERENTIAL PRESSURE
SENSOR
11 FUEL HARNESS
12 HIGH-PRESSURE FUEL HOSE 1; ;;JL RETURN HOSE
15 FUEL PUMP MODULE
16 FILLER NECK
17 FUEL CAP
IS REINFORCEMENT
19 PACKING
20 VAPOR HOSE
21 SEPARATOR ASSEMBLY
22 VAPOR HOSE
23 FUEL CHECK VALVE ASSEMBLY
24 FUEL FILLER NECK ASSEMBLY
Fig. 54 Fuel tank and related components-1999-00 Galant
:ia. 55 Fuel tank and related components-1992-96 Diamante
11. Align the 3 projections on packing with the
holes on the fuel pump and the nipples on the pump
facing the same direction as before removal.
12. Install the holdrng bolt through the bottom of
the tank. Make sure the gasket on the bolt is replaced
and is not pinched during installation. Torque to 10
ft. Ibs. (14 Nm).
1 PatkIng brake cable COnneCtlo” 11
2 Fuel tank “.qm hose
12 Fuel fllk, neck
3 “apot hose 13 Fuel filler assembly
4 Pressure hose 14
5 Vapor hose COnneCflOn Fuel p,pe
6 Fuel pump am gauge assembly
7 Vapor hose
8 Valve assembly
9 Fuel mer cap
10 FllkY hose
:ig. 56 Fuel tank and related components-1997-00 Diamante 93155g15
cal harness of the fuel gauge unit to allow for the fuel
pling. Lower the lateral rod and suspend from the
tank to be lowered slightly. If not, label and discon-
axle beam using wire.
nect the electrical harness at the fuel gauge unit.
6. Detach the high pressure fuel line connector 9. Remove the six retaining bolts and gasket
from the base of the tank.
at the pump.
10. Remove the fuel pump assembly.
7. Loosen self-lockinq nuts on tank suooort
To install: straps to the end of the stud bolts.
8 Remove the right side lateral rod attaching
bolt and drsconnect the arm from the right body cou- *If the packing material is damaged or de-
formed, replace it with new packing.
7923PG79 :ig. 57 Proper method of supporting real
rxhaust system-Diamante 3.01 engine

CHASSIS ELECTRICiL 6-13
.
Fig. 38 Pull the radia far enough out to ac-
cess the electrical connectors . . . 9315fip14 Fig. 39. . . then detach the connectors from
I I Fig. 40 Finally, detach the antenna cable
the rear of the radio and remove the radio from the vehicle
Fig. 41 Remove the heater control panel re-
Fig. 42 Remove the control cable from the
g3156p1g / Fig 43 Remove the control cable from the
bleid door
Cruise control is a speed control system that
maintains a desired vehicle speed under normal dri-
ving conditions. However, steep grades up or down
may cause variations in the selected speeds. The !
electronic cruise control system has the capability to
cruise, coast, resume speed, accelerate, “tap-up” and
“tap-down”.
The main parts of the cruise control system are the
functional control switches, speed control assembly, actuator, intermediate link, auto-cruise control mod-
ule assembly, speed sensor, and the release
switches.
Depending upon the year and/or model of your
vehicle, the cruise control system is either vacuum or
electronically controlled. The cruise control module
assembly contains a low speed limit which will pre-
vent system engagement below 25 mph (40 km/h).
The module is controlled by the functional switches located on a lever on the steering column or steering
wheel and on the instrument panel.
The release switches are mounted on the
brake/clutch/accelerator pedal bracket. When the
brake or clutch pedal is depressed, the cruise control
system is electrically disengaged and the throttle is
returned to the idle position.

6-14 CHASSIS ELECTRICAL
CRUISE CONTROL TROUBLESHOOTING Problem Posable Cause
WIII not hold proper speed 1 Incorrect cable adjustment
F.~. _I.~_ - 1L .-AL‘- I. I -

Cruise intermittently cuts out
trrnarng Inrome nnKage Leaking vacuum servo diaphragm
Leaking vacuum tank
Faulty vacuum or vent valve
Faulty stepper motor
Faulty transducer
Faulty speed sensor
Faulty cruise control module
‘ Clutch or brake switch adjustment too tight -chnrt *r nna* in the cruise control circuit
cer VI I”, . vt “y”‘,
I- Faulty transdu
Leaking vacuum circuit Faulty cruise control switch
Faulty stepper motor
Note. Use this chart as a guide. Not all systems will use the components listed.
t-,
I ,-- ,
REMOVAL&INSTALLATION
# See Figures 32 thru 40, 46 and 47
1. Disconnect battery negative cable.
*If equipped with an air bag, be sure to dis-
arm it before entering the vehicle.
2. Remove the panel from around the radio, On
some models the panel is retained with screws, On
others, use a plastic trim tool to pry the lower pad of
the radio panel loose.
3. Remove the radio/tape/CD player mounting
bracket retaining screws, 4. Slide the radio chassis out of the instrument
*panel and disconnect the radio wiring harness and
*Depending on the speaker installation, it
may save time at installation to identify and
tag all wires before they are disconnected.
5. Remove the mounting brackets from the radio.
To install:
6. The installation is the reverse of the removal
procedure. Make all electrical and antenna connec-
tions before fastening the radio assembly in place.
7. Test all functions of the entertainment system
prior to final installation. If all are satisfactory, install
the unit and center panel.
8. Connect the negative battery cable and recheck
the entire system for proper operation. CD Changer
1. Disconnect the negative battery cable.
2. Open the trunk lid.
3. Remove any necessary trim to access the CD
changer.
4. Remove the CD-changer-to-bracket retaining
screws.
5. Lift the changer from the bracket and detach
the electrical connectors.
6. Remove the changer from the vehicle.
To install:
7. The installation is the reverse of removal.
REMOVAL&INSTALLATION l
Front (Instrument Panel Mounted) Speaker
u See Figure 48
1. Disconnect the negative battery cable.
2. Remove the front speaker garnish.
3. Remove the retainers, detach the harness con-
nector and remove the front speaker,
Handle the speaker carefully to avoid dam-
aging the cone during removal and installa-
tion.
4. Installation is the reverse of the removal proce-
dure

6-22 CHASSIS ELECTRICAL
b
Fig. 87 After the washe: fluid reservoir
removed, the parking lamp bulb (B) and the
side marker lamp (A) are accessible on
Fig. 88 Twist the bulb socket to release it
1994-98 Galant models
from the lens Fig. 89 Pull the bulb assembly out of the
socket to remove
g3156p71 / Fig 90 Remove the turn signal lens retain-
ing’screw . . . . then remove the lens from the
Rear Turn Signal, Brake and Tail lights
p See Figures 94, 95, 96, and 97.
1. Disconnect the negative battery cable.
2, Open the trunk lid, hatch, or tailgate and re-
move the retainers, then remove the inner trim panel
in order to get to the rear lamp assembly.
3. Turn the necessary bulb and socket assembly
to unlock it from the housing, then pull it from the
housing.
4. Depress and twist the bulb l/a turn counter-
clockwise. Pull the bulb from the socket and replace
with a new one of the same type.
5. Installation is the reverse of the removal proce-
rl. ._^
UUIt?. Fig. 96 Twid
: the bulb socket to release it
from the lens
93156p69 Fig. 92 Twist the bulb socket to release it
from the lens
I
Fig. 94 The back-up lamp socket assembly
Pull the bulb assembly
out of the
located on the underside of the trunk lid.
. . . then unfasten the trim panel re-
Fig. 97 Depress and turn the bulb assem-
bly, then pull it out of the socket to remove

CHASSIS ELECTRlCiL 6-23
93156P57 Fig. 98 The back-up lamp socket assembly Fig. 99 Twist the bulb socket to release the
is located on the underside of the trunk lid locking tabs from the lens *1W5y] Fig 100 Pull the bulb assembly straight out
of the socket to remove it
Back-up light
u See Figures 98, 99, and 100
1 I Disconnect the negative battery cable.
2. Open the trunk lid.
3. If equipped, remove the trim on the underside
of the trunk lid.
4. Turn the socket counterclockwise ‘14 of a turn
to release it from the lens.
5. Pull the bulb out to remove it from the socket,
6. The installation is the reverse of removal.
7. Connect the negative battery cable.
8. Verify the operation of the lamp.
Side Marker light
# See Figures 101, lOi, 103, and 104 I. Remove the two retaining screws from the 2. Open the trunk lid and detach the electrical
lens. connector from the lamp assembly.
2. Remove the lens from the rear fascia. 3. Remove the retaining screw holding the lamp
’ 3. Grasp the bulb socket and rotate it counter- assembly.
clockwise to remove it from the lamp. 4. Lower the lamp assembly from the lamp lens.
4. Pull the bulb out to remove it from the’socket. 5. Rotate the bulb clockwise while pushing it
5. Installation is the reverse of removal. gently inward to remove it from the socket.
6. The installation is the reverse of removal. .
High-mount Brake light
199fH6 MIllAGE, 1990-93 GALANT, AND
799446 GALANT 7992-96 DlAMANTE
p See Figures 105, 106, 107, 108, and 109 1, Disconnect the negative battery cable.
2. On the Mirage and Galant, remove the square
1. Disconnect the negative battery cable.
*The lamp assembly is accessible from the
trunk underneath the package shelf. retainer clips or bolts from the high-mount brake
light cover and remove the cover.
3. On the Diamante, press gently inward on the
sides of the liaht cover and remove it from the lamp.
1 taining screw . ~ . 93156p73 1 Fig 101 Remove the side marker light re-
93156p75 1 / ;;x,;;:,sdhen puii the lens awaG;:: 1 1 fror;l the iens Fig 103 Twist the bulb socket to release it
Fig. 104 Pull the bulb assembly straight out
of the socket to remove Fig. 105 Detach the high-mount brake
light electrical connector Fig. 106 Remove the lamp retaining screws
. a *