1998 MITSUBISHI MONTERO oil

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Page 160 of 1501

MITSUBISHI MONTERO 1998 Service Manual Once repairs have been performed, DTCs must be cleared from
TCM memory. DTCs may be cleared by disconnecting negative battery
cable for 10 seconds or more. Reconnect cable and ensure DTCs hav

Once repairs have been performed, DTCs must be cleared from
TCM memory. DTCs may be cleared by disconnecting negative battery
cable for 10 seconds or more. Reconnect cable and ensure DTCs have
been cleared. Start engine and warm to normal operating temperature.
Run engine at idle for 10 minutes. DTCs may also be cleared using scan
tool. Refer to manufacturer's instruction manual.
DIAGNOSTIC TESTS
NOTE: For terminal and wire color identification, see WIRING
DIAGRAMS.
DTC 11: THROTTLE POSITION (TP) SENSOR
For diagnosis and testing information, see appropriate SELF-
DIAGNOSTICS article in ENGINE PERFORMANCE section. If TP sensor is
okay, check wiring harness and connectors between TP sensor and TCM.
Repair if necessary. If wiring harness and connectors are okay,
replace TCM.
DTC 15 & 16: OPEN OR SHORT IN OIL TEMPERATURE SENSOR CIRCUIT
1) Test oil temperature for proper operation. See OIL
TEMPERATURE SENSOR under COMPONENT TESTING. If oil temperature sensor
is okay, check wire harness, connectors and ground circuit for poor
connections or damage. Go to next step.
2) If wire harness and connectors are okay, check DTCs again
and verify code No. 15 or No. 16 still exists. If either code still
exists, replace TCM.
DTC 21 & 22: SHORT OR OPEN IN IGNITION SIGNAL CIRCUIT
1) Using an external tachometer, verify vehicles' tachometer
is operating accurately. If tachometer is incorrect, check ignition
coil and ignition power transistor and circuits for malfunction. See
appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE section.
2) If tachometer is okay, check TCM wire harness connector
for poor connection. If wire harness is okay, recheck DTCs. If codes
reappear check wire harness between ignition power transistor and TCM.
If wire harness is okay, replace TCM.
DTC 23 & 24: OPEN OR SHORT IN SIGNAL LINE (ECT) FROM ECM TO
TCM
Check wire harness, connectors and ground circuit for poor
connections or damage. Go to next step. If wire harness and connectors
are okay, check DTCs again and verify code No. 23 or No. 24 still
exists. If either code still exists, replace TCM.
DTC 29 & 30: SHORT OR OPEN IN PARK/NEUTRAL POSITION (PNP)
SWITCH CIRCUIT
1) Check PNP switch for correct operation. See. If PNP switch
is okay, disconnect switch connector and measure voltage between
harness connector terminal No. 1 and ground.
2) If battery voltage does not exist, check wire harness and
connectors. See WIRING DIAGRAMS. If battery voltage exists, check wire
harness and connectors between PNP switch and TCM. If wire harness is
okay, replace TCM.
DTC 31: INPUT SPEED SENSOR

Page 164 of 1501

MITSUBISHI MONTERO 1998 Service Manual If DTC 51 is set also, go to DTC 51: 1ST GEAR RATIO SIGNAL
INCORRECT test. If DTC 51 is not set, check overdrive brake for a
mechanical failure. See OVERDRIVE BRAKE in MITSUBISHI R4AW3 & V4AW

If DTC 51 is set also, go to DTC 51: 1ST GEAR RATIO SIGNAL
INCORRECT test. If DTC 51 is not set, check overdrive brake for a
mechanical failure. See OVERDRIVE BRAKE in MITSUBISHI R4AW3 & V4AW3
OVERHAUL article.
SYMPTOM TROUBLE SHOOTING
NOTE: Check system using appropriate scan tool. See WIRING DIAGRAMS
for electrical schematics and COMPONENT TESTING.
COMMUNICATION WITH SCAN TOOL NOT POSSIBLE
If scan tool cannot communicate with TCM, check proper
connection with DLC. Check TCM power circuits, TCM ground circuits and
malfunctioning TCM.
SHIFT POINTS INCORRECT
If shift points are incorrect, check for DTCs. If no DTC is
present, check oil temperature sensor, pattern select switch, 4WD low
range detection switch and TCM for proper operation.
UPSHIFTS OCCUR SPONTANEOUSLY
If upshifting occurs spontaneously, check park/neutral
position switch, overdrive switch and TCM for proper operation.
TCC LOCK-UP MALFUNCTIONING
If TCC lock-up system is not operating properly, check torque
converter, valve body, lock-up switch and oil temperature switch.
COMPONENT TESTING
A/T FLUID TEMPERATURE SWITCH
1) Remove fluid temperature switch, located to rear of
neutral safety switch. Immerse switch in container of ATF up to top
threaded portion of switch. Using a DVOM, check continuity between
switch terminals. Continuity should not exist when fluid temperature
is 257
F (125C) or less.
2) When fluid is heated to 289-304F (143-151C), continuity
should exist. Replace switch if necessary. Apply thread sealant to
fluid temperature switch threads and install in transmission.
BRAKELIGHT SWITCH
1) Disconnect electrical connector from brakelight switch,
located near brake pedal. Using ohmmeter, ensure continuity exists
between terminal No. 2 (White/Red wire) and terminal No. 3 (Green
wire) with brake pedal released. Replace brakelight switch if
continuity does not exist. Continuity should not exist between
terminals No. 2 and No. 3 with brake pedal depressed.
2) If continuity does not exist, ensure brake pedal is
properly adjusted so brakelight switch has proper travel for switch
operation. If proper brakelight switch travel exists, replace
brakelight switch.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR

Page 165 of 1501

MITSUBISHI MONTERO 1998 Service Manual Disconnect electrical connector from coolant temperature
sensor. Using ohmmeter, check resistance between terminals of coolant
temperature sensor. Resistance should be as specified in accorda

Disconnect electrical connector from coolant temperature
sensor. Using ohmmeter, check resistance between terminals of coolant
temperature sensor. Resistance should be as specified in accordance
with the TEMPERATURE-TO-RESISTANCE VALUES table. Replace coolant
temperature if resistance is not within specification.
TEMPERATURE-TO-RESISTANCE VALUES
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Temperature F (C) Ohms
32 (0) ......................................................... 5.8\
68 (20) ........................................................ 2.4\
104 (40) ....................................................... 1.1\
176 (80) ....................................................... 0.3\
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INPUT SPEED SENSOR
Disconnect solenoid and sensor connector. Using ohmmeter,
measure resistance between terminals No. 9 and No. 10. See Fig. 9.
Resistance should be 560-680 ohms at 68
F (20C). If resistance is not
as specified, replace No. 2 speed sensor.
OIL TEMPERATURE SENSOR
Disconnect solenoid and sensor connector. Using ohmmeter,
check resistance between sensor connector terminals No. 1 and No. 2.
See Fig. 9 . Resistance should be 10 k/ohms when oil temperature is
77
F (25C). With oil temperature at 248F (120C), resistance should
be 615 ohms. If resistance is not as specified, replace oil
temperature sensor.
OUTPUT SPEED SENSOR
Disconnect solenoid and sensor connector. Using ohmmeter,
measure resistance between terminals No. 3 and No. 4. See Fig. 9.
Resistance should be 560-680 ohms at 68
F (20C). If resistance is not
as specified, replace output speed sensor.
OVERDRIVE SWITCH
Using a screwdriver, remove overdrive switch from selector
lever, located below selector lever button. Using a DVOM, check
continuity between overdrive switch terminals No. 3 and 5 with switch
in ON position. Continuity should exist. With switch in OFF position,
check continuity between terminals No. 3 and 4. Continuity should
exist. If continuity is not as specified, replace switch. See Fig. 10.
Fig. 10: Identifying Overdrive Switch Terminals
Courtesy of Mitsubishi Motor Sales of America.
PARK/NEUTRAL POSITION (PNP) SWITCH

Page 169 of 1501

$MITSUBISHI MONTERO 1998 Service Manual \b�� \ ��\ ��\ �� \ ��\ �� \ ��\ �� 14 No. 1 Shift Solenoid In 1st$

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14 No. 1 Shift Solenoid In 1st Or 2nd Battery
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14 No. 1 Shift Solenoid In 3rd Or 4th Gear 0 Volts
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15 Power Supply Ignition ON Battery
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15 Power Supply Ignition OFF 0 Volts
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16 No. 2 Shift Solenoid In 2nd Or 3rd Gear Battery
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16 No. 2 Shift Solenoid In 1st Or 4th Gear 0 Volts
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17 Diagnostic Test Mode Not Specified Not Specified
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18 Diagnostic Output Scan Tool Not Battery

Connected
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21 Oil Temp Warning Lamp Normal Temp. Range 0 Volts
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21 Oil Temp Warning Lamp For 5 Seconds After Battery

Ign. Is On
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22 Oil Temp Sensor Temp @ 248F (120C) About 1.9
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22 Oil Temp Sensor Temp @ 302F (150C) About 1.1
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23 4WD Low Range Switch 4WD Lever In 4H-Lock Battery
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23 4WD Low Range Switch 4WD Lever In 4L-Lock 0 Volts
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24 Neutral Safety Switch In "R" Position Battery
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24 Neutral Safety Switch Except In "R" 0 Volts
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25 Ground Engine Idling 0 Volts
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26 Ground Engine Idling 0 Volts
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31 Neutral Safety Switch In "L" Position Battery
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31 Neutral Safety Switch Except In "L" 0 Volts
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32 Neutral Safety Switch In "N" Position Battery
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32 Neutral Safety Switch Except In "N" 0 Volts
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34 Power Mode Power Mode Selected Battery
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34 4WD Detection Switch 2WD 4 Volts Or

Montero Greater
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34 4WD Detection Switch 4WD 0-1 Volts

Montero
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34 Free Wheel 2WD 4 Volts Or

Montero Engage Switch Greater

Sport
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34 Free Wheel 4WD 0 Volts

Montero Engage Switch

Sport
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Page 171 of 1501

MITSUBISHI MONTERO 1998 Service Manual until brakelight plunger contacts brake pedal.
2) Loosen brakelight switch 1/2 to one turn. Install and
tighten lock nut on brakelight switch. Install electrical connector.
Ensure brakelights

Page 233 of 1501

MITSUBISHI MONTERO 1998 Service Manual WHEEL CYLINDERS
Removal & Installation
Raise and support vehicle. Remove rear brake drum and shoes.
See REAR BRAKE DRUM & SHOES . Remove wheel cylinder and seal assembly.

WHEEL CYLINDERS
Removal & Installation
Raise and support vehicle. Remove rear brake drum and shoes.
See REAR BRAKE DRUM & SHOES . Remove wheel cylinder and seal assembly.
To install, reverse removal procedure. Bleed brakes. See
BLEEDING BRAKE SYSTEM .
MASTER CYLINDER
Removal
Drain brake fluid from master cylinder. Remove sensor
connector (if equipped). Disconnect brake lines from master cylinder,
and install plugs to prevent brake fluid spillage. Remove master
cylinder from booster and separate reservoirs from housing (if
necessary).
Installation
To install, reverse removal procedure. Before installation,
check and adjust clearance between back of master cylinder piston and
power brake push rod. See MASTER CYLINDER PUSH ROD under ADJUSTMENTS.
After installation, adjust pedal height. See BRAKE PEDAL HEIGHT & FREE
PLAY under ADJUSTMENTS. Bleed brake system.
POWER BRAKE BOOSTER
Removal
Remove brake master cylinder. See MASTER CYLINDER. Disconnect
vacuum hose from power brake booster. Disconnect clevis pin attaching
brake pedal to power brake booster push rod. From inside vehicle,
remove 4 nuts attaching power brake booster to firewall. Remove power
brake booster.
Installation
To install, reverse removal procedure. Install master
cylinder. Bleed brake system if necessary.
POWER BRAKE BOOSTER CHECK VALVE
NOTE: To test check valve before removal, see POWER BRAKE BOOSTER
under TESTING.
Removal & Installation
Remove vacuum hose with check valve from power brake booster.
Loosen hose clamp(s) and remove check valve from hose on Mirage and
Summit. On all models, coat end(s) of check valve with sealant before
installation. Install valve with arrow (identification mark) pointing
toward intake manifold. Install and secure hose clamp(s).
REAR AXLE BEARINGS & OIL SEAL
Removal (Montero & Montero Sport)
1) With disc or drum removed, disconnect brake line from
caliper or wheel cylinder. Disconnect parking brake cable end, and
remove cable attaching bolts. Remove brake backing plate, bearing case
and axle shaft as an assembly. If axle shaft binds, use slide hammer
and puller to remove.
2) Remove shims, "O" ring and snap ring. Retain shims for
installation. Secure axle shaft assembly in a vise, and remove one
retainer bolt from backing plate. Push bearing case completely to side
of dust cover. Place adhesive tape around edge of bearing case at

Page 234 of 1501

MITSUBISHI MONTERO 1998 Service Manual retainer bolt hole to prevent damage.
CAUTION: DO NOT damage bearing case or axle shaft when grinding or
chiseling retainer ring.
3) Secure axle shaft, and grind retainer ring until

Page 235 of 1501

MITSUBISHI MONTERO 1998 Service Manual cavity and contact surfaces. Install oil seal using seal driver. Press
new oil seal into bearing case until it is flush with face of bearing
case. Install backing plate and bearing case.
2) A

cavity and contact surfaces. Install oil seal using seal driver. Press
new oil seal into bearing case until it is flush with face of bearing
case. Install backing plate and bearing case.
2) Apply grease to external surfaces of bearing outer race.
Press bearing outer race into bearing case. Install rear brake
assembly and bearing case. Pack bearing case and axle threads with
grease. Install new retainer ring and snap ring.
3) Using a feeler gauge, measure clearance between snap ring
and new retainer ring. Clearance should be less than 0.0065" (0.165
mm). If clearance exceeds specification, install a new selective snap
ring to bring clearance to specification. See SNAP RING THICKNESS
SPECIFICATION table.
SNAP RING THICKNESS SPECIFICATION
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Thickness: In. (mm) Color\
0.060 (1.52) ................................................... Red\
0.067 (1.70) ................................................ Purple\
0.073 (1.85) .................................................. Blue\
0.079 (2.01) ................................................ Yellow\
0.085 (2.16) ............................................... Neutral\
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4) Check condition of oil seal and replace as necessary.
Install axle shaft assembly into axle housing. Tighten bearing
retainer bolts to 65 ft. lbs (15 N.m.). To complete installation,
reverse removal procedure.
REAR AXLE HUB BEARINGS
NOTE: Rear hub bearings are not serviceable on FWD models.
Removal & Installation (FWD Models)
1) Raise and support vehicle. Remove wheels. Remove wheel
speed sensor (if equipped). On models with drum brakes, remove brake
drum and shoes. See REAR BRAKE DRUM & SHOES .
2) On models with disc brakes, remove caliper and rotor. On
all models, remove hub bolts or spindle nut and hub assembly. To
install, reverse removal procedure. Tighten hub bolts or spindle nut
to specification. See HUB TIGHTENING TORQUE table. Rotate brake drum
or disc to ensure free movement.
NOTE: Rear hub bearings are not serviceable on Eclipse AWD models.
Removal & Installation (Eclipse AWD)
1) Raise and support vehicle. Remove wheels. Remove wheel
speed sensor (if equipped). On models with drum brakes, remove brake
drum and shoes. See REAR BRAKE DRUM & SHOES .
2) On models with disc brakes, remove caliper and rotor. On
all models, remove axle nut. Remove 4 hub bolts and hub assembly. To
install, reverse removal procedure. Tighten hub bolts to
specification. See HUB TIGHTENING TORQUE table. Rotate brake drum or
disc to ensure free movement.
HUB TIGHTENING TORQUE
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Application Ft. Lbs. (N.m)\
Hub Mounting Bolts ................................... 54-65 (74-85)\
Spindle Nut
Mirage ................................................. 127 (172)\
3000GT FWD ............................................. 170 (230)\

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