1998 MITSUBISHI MONTERO battery
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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 167 of 1501
Using a screwdriver, remove pattern select switch from
console. Switch is located at rear of selector lever, to right of
emergency brake handle. Using a DVOM, check continuity between pattern
select switch terminals No. 1 and 2, with switch in HOLD position.
Continuity should exist. With switch in POWER position, check
continuity between terminals No. 1 and 6. Continuity should exist. If
continuity is not as specified, replace switch. See Fig. 12.
Fig. 12: Identifying Pattern Select Switch Terminals
Courtesy of Mitsubishi Motor Sales of America.
SOLENOIDS
For solenoid testing, refer to the appropriate DTC under
DIAGNOSTIC TESTS. To check solenoid operation, apply battery voltage
to appropriate terminal of TCM connector and ground. Ensure operating
sound can be heard when battery voltage is connected. Replace solenoid
if operating sound cannot be heard.
THROTTLE POSITION (TP) SENSOR
For diagnostic and testing information, see appropriate SELF-
DIAGNOSTICS article in ENGINE PERFORMANCE section.
4WD LOW RANGE DETECTION SWITCH
For location and testing information on 4WD low range
detection switch, see appropriate article in AXLE SHAFTS & TRANSFER
CASES.
TCM PIN VOLTAGE CHARTS
Access TCM. See Fig. 1 or 2. Turn ignition on. Using DVOM,
Page 168 of 1501
backprobe TCM connector. See Fig. 13. Check voltage between designated
terminals on TCM connector and ground. See TCM TERMINAL VOLTAGE
SPECIFICATIONS table. Voltage should be as specified.
Fig. 13: Identifying TCM Terminals
Courtesy of Mitsubishi Motor Sales of America.
TCM TERMINAL VOLTAGE SPECIFICATIONS
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Terminal Circuit Condition Voltage
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1 Lock-Up Solenoid Lock-Up Clutch Engaged Battery
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1 Lock-Up Solenoid Lock-Up Clutch 0 Volts
Disengaged
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2 Back-Up Power Supply At All Times Battery
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5 Brakelight Switch Brake Pedal Depressed 0 Volts
\b
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\b
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8 TP Sensor Throttle Closed (Idle) .3-1.0
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8 TP Sensor Throttle Wide Open 4.4-5.0
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11 Neutral Safety Switch In "P" Position Battery
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12 Ground Engine Idling 0 Volts
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14 No. 1 Shift Solenoid In 1st Or 2nd Battery
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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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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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![MITSUBISHI MONTERO 1998 Service Manual 35 Output Speed Ignition Off 0 Volts
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35 Output Speed Ignition Off 0 Volts
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Sensor Gnd
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36 Input Speed Sensor Gnd Ignition Off 0 Volts
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36 Input Speed Sensor Gnd Ignition On 2.5 Volts
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37 Overdrive OFF Signal (
1) Steady Driving @ Battery
31 MPH (50 km/h)
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37 Overdrive OFF Signal (
1) Climbing Hill @ 0 - 1
31 MPH (50 km/h)
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38 Engine Ign. Signal Engine @ 3000 RPM .3 - 3.0
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39 Neutral Safety Switch In "D" Position Battery
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39 Neutral Safety Switch Except In "D" 0 Volts
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40 Neutral Safety Switch In "2" Position Battery
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40 Neutral Safety Switch Except In "2" 0 Volts
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41 HOLD Mode HOLD Mode Selected Battery
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41 HOLD Mode HOLD Mode Not Selected 0 Volts
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42 Overdrive Switch Overdrive ON 0 Volts
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42 Overdrive Switch Overdrive OFF Battery
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43 Output Speed Sensor Vehicle Stopped About 2.5
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44 Input Speed Sensor Vehicle Stopped About 2.5
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44 Input Speed Sensor Vehicle Moving Other Than
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45 Coolant Temp Sensor Temp @ 86F (30C) 2.5
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45 Coolant Temp Sensor Temp @ 158F (70C) 0 Volts
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46 MIL Signal Ignition ON .5
4.5 Volts
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1) - Test circuit with shift lever in "D" position, mode selector
normal and cruise control on.
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REMOVAL & INSTALLATION
BRAKELIGHT SWITCH
Removal & Installation
1) Disconnect electrical connector. Remove lock nut, and
unscrew brakelight switch. To install, screw brakelight switch inward
Page 246 of 1501
C - SPECIFICATIONS
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Service & Adjustment Specifications
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
Use this article to quickly find specifications related to
servicing and on-vehicle adjustments. This is a quick reference
article to use when you are familiar with an adjustment procedure and
only need a specification.
CAPACITIES
BATTERY SPECIFICATIONS TABLE \
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Application Group Size CCA Rating
Diamante ................ 57NAS .................... 520
Eclipse .................. 86 ........... 430 Or ( 1) 525
Galant ................... D26 ..................... 490
Mirage ................. 55B24L .................... 433
Montero ............... 75D26R-MF .................. 490
Montero Sport .......... 75D23R .................... 520
3000GT ................ 75D23R-MF .................. 520
( 1) - Used on 2.0L non-turbo with A/T.
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NOTE: Refill capacities are approximate. Correct fluid level
should be determined by mark on dipstick, if applicable.
FLUID CAPACITIES TABLE
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Application Quantity
Automatic Transaxle
(Mitsubishi Plus/Mopar Plus/Dexron-II)
Diamante .............................. 9.0 Qts. (8.5L)
Eclipse
2.0L
Non-Turbo ......................... 9.1 Qts. (8.6L)
Turbo ............................. 7.1 Qts. (6.7L)
2.4L ................................ 6.4 Qts. (6.1L)
Galant ................................ 6.3 Qts. (6.0L)
Mirage ................................ 8.2 Qts. (7.8L)
3000GT ................................ 7.9 Qts. (7.5L)
Automatic Transmission
(Mitsubishi Plus/Mopar Plus/Dexron II)
Montero .............................. 10.0 Qts. (9.8L)
Montero Sport ........................ 10.4 Qts. (9.8L)
Cooling System
(Includes Heater & Reserve Tank)
Diamante ............................... 10 Qts. (9.5L)
Eclipse & Galant ...................... 7.4 Qts. (7.0L)
Mirage
1.5L ................................ 5.3 Qts. (5.0L)
1.8L ................................ 6.3 Qts. (6.0L)
Page 260 of 1501
specified, bleed system and inspect hydraulic and clutch components.
See CLUTCH PEDAL SPECIFICATIONS table.
CLUTCH PEDAL INTERLOCK SWITCH
1) Place transmission in Neutral and apply parking brake.
Turn ignition switch to START position with clutch pedal not
depressed. Engine should not crank. If engine cranks, adjust or
replace interlock switch.
2) Disconnect interlock switch connector. Interlock switch
connector is located at clutch pedal. Depress and release interlock
switch. Using ohmmeter, check continuity between interlock switch
terminals. If continuity exists with interlock switch depressed and
does not exist with switch released, switch is okay. Adjust or replace
as necessary.
REMOVAL & INSTALLATION
CLUTCH ASSEMBLY
Removal (2WD Models)
1) Disconnect negative battery cable. Remove shift knob, dust
cover retaining plate, gaskets, stopper plate and control lever
assembly. Raise and support vehicle.
2) Remove front exhaust pipe. Drain transmission fluid. Index
mark drive shaft flange and remove drive shaft.
3) Disconnect back-up light switch connector, speedometer
cable connection and exhaust pipe mounting bracket. Remove lower
bellhousing cover. Disconnect clutch cable from clutch lever.
4) Support transmission with jack. Remove rear engine mount
nuts and bolts from transmission. Remove crossmember with rear engine
mount. Remove remaining bellhousing bolts, move transmission toward
rear and lower from vehicle.
5) If reusing pressure plate, index mark pressure plate to
flywheel for installation reference. Install a clutch alignment tool
to prevent pressure plate and clutch disc from dropping. Loosen
pressure plate bolts gradually in a crisscross pattern to avoid
warping pressure plate flange during removal. Remove pressure plate
and clutch disc. See Fig. 3.
Inspection
1) Check release bearing and release fork for damage or wear.
DO NOT clean release bearing assembly in solvent.
2) Inspect pressure plate surface for wear, cracks, and/or
discoloration. Measure diaphragm spring ends for wear and uneven
height. Replace assembly if height difference between fingers exceeds
.02" (.5 mm).
3) Check facing of clutch disc for loose rivets, uneven
contact, deterioration, seizure or oil saturation. Measure distance
from clutch disc surface to head of rivet. Replace clutch disc if
distance is less than .012" (.30 mm). Replace worn or defective
components as necessary. See Fig. 4.
CAUTION: Install clutch disc with manufacturer's stamp mark (located
near hub of clutch disc) toward pressure plate.
Installation
1) Using a clutch alignment tool, install pressure plate and
clutch disc. If reusing pressure plate, ensure index marks are
aligned. Tighten bolts evenly in a crisscross pattern to
specification. See TORQUE SPECIFICATIONS . See Fig. 3.
2) Clean release bearing sliding surface. DO NOT clean
Page 268 of 1501
COMPUTER RELEARN PROCEDURES
1998 Mitsubishi Montero
GENERAL INFORMATION
Computer Relearn Procedures
All Models
* PLEASE READ THIS FIRST *
The following general procedures are to be used if
driveability problems are encountered after power loss or battery has
been disconnected. These procedures may provide an aid in eliminating
these problems.
To reduce the possibility of complaints, after any service
which requires battery power to be disconnected, vehicle should be
road tested.
COMPUTER RELEARN PROCEDURES
Vehicles equipped with engine or transmission computers may
require a relearn procedure after vehicle battery is disconnected.
Many vehicle computers memorize and store vehicle operation patterns
for optimum driveability and performance. When vehicle battery is
disconnected, this memory is lost. The computer will use default data
until new data from each key start is stored. As computer memorizes
vehicle operation for each new key start, driveability is restored.
Vehicle computers may memorize vehicles operation patterns for 40 of
more key starts.
Customers often complain of driveability problems during
relearn stage because vehicle acts differently then before being
serviced. Depending on type and make of vehicle and how it is
equipped, the following complaints (driveability problems) may exist:
* Harsh Or Poor Shift Quality
* Rough Or Unstable Idle
* Hesitation Or Stumble
* Rich Or Lean Running
* Poor Fuel Mileage
These symptoms and complaints should disappear after a number
of drive cycles have been memorized. To reduce the possibility of
complaints, after any service which requires battery power to be
disconnected, vehicle should be road tested. If a specific relearn
procedure is not available, the following procedure may be used:
Automatic Transmission
* Set parking brake, start engine in "P" or "N" position.
Warm-up vehicle to normal operating temperature or until
cooling fan cycles.
* Allow vehicle to idle for one minute in "N" position. Select
"D" and allow engine to idle for one minute.
* Accelerate at normal throttle position (20-50%) until vehicle
shifts into top gear.
* Cruise at light to medium throttle.
* Decelerate to a stop, allowing vehicle to downshift, and use
brakes normally.
* Process may be repeated as necessary.
Manual Transmission