1900 MITSUBISHI DIAMANTE width

DRIVEABILITYAND EMISSIONS CONTROLi 4-11
fold. Resistance changes in response to the ambient
air temperature. The sensor has a negative tempera-
ture coefficient. As the temperature of the sensor
rises the resistance across the sensor decreases. Thil
provides a signal to the PCM indicating the tempera-
ture of the incoming air charge. This sensor helps the
PCM to determine spark timing and air/fuel ratio. In-
formation from this sensor is added to the pressure
sensor information to calculate the air mass being
sent to the cylinders. The IAT receives a 5-volt refer-
ence signal and the signal return is based upon the
change in the measured resistance due to tempera-
ture.
TESTING
b See Figures 54, 55, 56, 57, and 58
Fig. 54 Testing the resistance of the IAT
sensor across the two sensor pins
Fig. 55 The IAT sensor can be monitored
with an appropriate and Data-stream capa-
ble scan tool
~1 b. Sensor temperature of 68°F (2O”C)--‘ 2.>3.0 kilo-ohms c. Sensor temperature of 176°F (SO*C)-
0.30-0.42 kilo-ohms
5. Measure the sensor resistance while heating
the sensor area with a hair dryer. As the temperature
of the sensor increases, sensor resistance should be-
come smaller.
6. If the measured resistance deviates from the
standard value or the resistance remains unchanged,
replace the air flow sensor assembly.
1 REMOVAL&INSTALLATION
The IAT sensor is part of the Mass Air Flow (MAF)
sensor. The IAT sensor cannot be replaced sepa-
rately. Refer to MAF sensor removal and installation
in this section.
- OPERATION a9574g72 Fig. 56 IAT sensor terminal identification;-
1990-93 Galant The Mass Air Flow (MAF) sensor directly mea-
lres the mass of air being drawn into the engine.
I ?he sensor output is used to calculate injector pulse
width. The MAF sensor is what is referred to as a
“hot-wire sensor”. The sensor uses a thin platinum
wire filament, wound on a ceramic bobbin and coated
with glass, that is heated to 417°F (200°C) above the
amh+en+ nir +PmnPrfijre and subiected to the intake
..I._ ~ ..-.. .“..‘r-,u.. ai mow stream. A “cold-wire” is used inside the MAF
sensor resuirance wnoe nearmg ir wnn a 1
hair drier ‘hat melt: IS al I~“< ,“.., lvllQ UtiLnbtill ,,,=
tnd GND terminals of the MAF sensor connec-
tor. If voltaae is not within specification, check power
1. Detach the air flow sensor electrical connector.
2. Measure the resistance between terminals No.
4 and No. 6 of the electrical connector, except on the
2.OL DOHC turbo engine.
3. ff equipped with the 2.OL DOHC turbo engine,
measure the resistance between terminals No. 6 and
No. 8 of the sensor electric connector.
4. Compare test readings to the following specifi-
cations:
a. Sensor temperature of 32°F (O“C)--
5.3-6.7 kilo-ohms and groundcircuits and repair as necessary.
verify that there is at least 4.5 volts between the SIG 3. With the ignition key ON, and,the engine ON,
and GND terminals of the MAF sensor connector. If
voltage is not within specification, check power and
ground circuits and repair as necessary.
4. With the ignition key ON, and the engine ON,
check voltage between GND and SIG RTN terminals.
Voltage should be approximately 0.34-l .96 volts. If
voltage is not within specification, the sensor may be
faulty.
/ sensor to determine the ambient air temperature.
Battery voltage, a reference signal, and a ground
signal from the PCM are supplied to the MAF sensor.
rho ~pn**r rp+++rns a signal proportionate to the cur-
re. The increased airflow across the
s a cooling fan, lowering the resis-
mo more current to maintain the tem- tance and requir
e^-‘.._^ ^I LL^
I
Intake air temper- pe~a+ure UI me wire. The increased current is mea- aturf sensor sured by the voltage in the circuit, as current
increases, voltage increases. As the airflow increases
the signal return voltage of a normally operating MAF
sensor will increase.
, ~~1 TESTING - II ire” at the re-
89574g74 Fig. 58 Measure the intake air temperature
-----_ ---1-a---- L..- L--1. . . .*a 1. Using a multimeter, check for voltage by back-
nrr\hinn +hn MAF sensor connector.
the ignition key ON, and the engine OFF, .^-^ :- -’ ‘.txt In E; \mltr hahrman tha veriry t
BAT-T i

10-4 BODYANDTRIM
Fig. 8 Tailgate assembly mounting-Dia-
mante Wagon
6. Remove the tailgate from the vehicle and place
it in a safe place.
7. The installation is the reverse of removal.
Tighten the hinge
nuts to IO ft. Ibs. (14 Nm).
8. Check the alignment of the tailgate.
ALIGNMENT
To adjust the tailgate, loosen the tailgate hinge-to-
body bolts or tailgate latch assembly mounting
screws and adjust as necessary.
REMOVAL &INSTALLATION
1. Disconnect the negative battery cable.
2. Open the trunk lid. Identify the trunk release
cable running from the latch to the body.
3. Disconnect the cable from the latch.
4. Detach any necessary electrical connectors.
5. Outline the position of the hinges on the
trunk lid.
6. Support the trunk lid in the open position.
7. If equipped, insert a small prytool into the
lock cover slit, remove the lock covers, then remove
the trunk lid gas springs.
8. Unfasten the retaining bolts, then remove the
trunk lid hinges.
9. Remove the trunk lid from the vehicle
10. Installation is the reverse of the removal pro-
cedure.
11. If necessary, align the trunk lid.
ALIGNMENT
1. Close the lid and check both the seam width
all around and the closed height. The trunk lid must
be flush with the adjacent panels. Minor height ad-
justments may be made by turning the rubber
bumpers on the trunk lid. Additional adjustments re-
quire loosening and repositioning of the latch and/or
striker.
REMOVAL &INSTALLATION
? See Figure 9
1. Knob 2. Delta cover inner
3. Boot
4. Door mirror
5. Mirror
Fig. .9 Outside door mirror
1994-98 Galant shown
, others 9315oQ1 i mounting-
similar
1. Disconnect the negative battery cable.
2. Remove the delta cover (the triangular trim
cover) from the top of the door panel.
3. On manual mirrors remove the set screw and
the adjustment knob.
4. If the mirror is electric, disconnect the wire
harness.
5. Remove the mounting nuts and the door trim
bracket.
6. Lift the mirror from the vehicle.
To install: 7. Position the mirror on the vehicle.
8. Install the door trim bracket and the mount-
ing nuts.
9. If the mirror is electric, reconnect the wire
harness.
IO. On manual mirrors, install the knob and set
screw.
11. Install the delta cover.
12. Connect the negative battery cable.
13. If electric, cycle the mirror several times to
make sure that it works properly.
# See Figure 11
REPLACEMENT
1990-92 Mirage
b
See Figure 10
*The mast may be replaced separately by
simply unscrewing it from the base. The fol-
1. center panel and glove box
2 scuff plate
3 cowl 51ae wm
4 Washer duct 2 p$iltrol ““It
7 CaMeband
8 cap
9 Anrsnna mast
10 Antenna base “ourmng ““f
11 Antennz.base
%i%Qol
Fig. 10 Antenna mounting-1990-92 Mi-
rage lowing procedure is for replacing the base
and cable as a unit.
1 I Raise and safely support the vehicle securely
on jackstands.
2. Remove the passenger side front wheel.
3. Remove the splash shield inside the passen-
ger side front wheel arch.
4. Remove the center panel {for radio access)
and remove the glove box.
5. Remove the right side sill plate and remove
the kick panel.
6. If the car has a rear heater, remove the
shower duct under the glove box.
7. Carefully remove the PCM. For more details,
please refer to Section 4.
8. Remove the radio and disconnect the antenna
cable.
9. Release the cable from the bands and clips
holding it under the dash.
10. Unscrew the mast from the antenna base.
II. Remove the upper base mounting nut (at the
fender) and disconnect the lower bolt holding the
mast. Remove the mast and carefully remove the ca-
ble.
12. Install the new unit, tightening both the upper
nut and lower bolt.
13. Carefully feed the cable into the car and route
it to the radio. Engage the cable in the clips and in-
stall new retaining bands.
14. Connect the antenna cable to the radio and
reinstall the radio.
15. Replace the MPI control unit. t
16. Install the heater duct, if it was removed, and
install the kick panel on the right side.
17. Install the sill plate. Install the glove box.
18. Install the center panel.
19. Reinstall the wheel arch splash shield. Install
the wheel if it was removed. Lower the car to the
ground.
1993-00 Mirage
I. Disconnect the negative battery cable.
2. Remove the antenna base retaining screws.
3. Lift the base and mast assembly up from the
roof.
4. Detach the connector for the antenna.
5. The installation is the reverse of removal.
1. Pole
2. Knee protactor
3. Air outlet center panel assembly 4. Radto and laps player
5. Cowl side trim (driver’s side)
6. Chp
7. Antenna base
6. Base
931 !iogo2 Fig. 11 Antenna mounting-1993-00 Mi-
rage