1991 MITSUBISHI MONTERO instrument panel

OIL PRESSURE GAUGE
Circuit Test
Disconnect oil pressure gauge wiring connector from sending
unit inside the engine compartment. Connect a 12-volt test light
between harness connector terminal and ground. Turn ignition on, but
DO NOT start engine. If test light comes on and gauge needle moves, go
to GAUGE RESISTANCE TEST. If test light does not come on and gauge
needle does not move, repair wiring to sending unit.
Gauge Resistance Test
Remove instrument cluster from instrument panel. See
INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check continuity
between oil pressure gauge terminals. See Fig. 4 or Fig. 5. See
OIL PRESSURE GAUGE RESISTANCE SPECIFICATIONS table. If resistance is
not within specification, replace oil pressure gauge.
OIL PRESSURE GAUGE RESISTANCE SPECIFICATIONS TABLE









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Application Ohms
Montero ...................................... 50
Pickup & Ram-50 ........................... 37-47









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Fig. 4: Oil Pressure Gauge Test Terminal ID (Pickup & Ram-50)
Courtesy of Chrysler Motors

Calibration Test
Adjust tire pressure to standard value. Using a calibrated,
reliable speedometer tester, compare reading of vehicle speedometer to
speedometer tester. See SPEEDOMETER ALLOWABLE VARIATION table. Replace
speedometer if necessary.
SPEEDOMETER ALLOWABLE VARIATION TABLE









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MPH (km/h) Allowable Variation MPH (km/h)
20 (32) .......................... 19-22 (31-35)
40 (64) .......................... 38-44 (61-71)
60 (97) ......................... 57-66 (92-106)
80 (129) ....................... 76-88 (122-142)
100 (161) ..................... 94-110 (151-177)









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TACHOMETER
NOTE: DO NOT reverse polarity when installing tachometer, as diode
and transistor may be damaged.
Calibration Test
Connect a calibrated, reliable tach-dwell meter to vehicle
ignition system. Operate engine at various speeds (RPM). See
TACHOMETER ALLOWABLE VARIATION table. If comparison between tach-dwell
meter and vehicle tachometer readings do not fall in the standard
range of permissible variation, replace vehicle tachometer.
TACHOMETER ALLOWABLE VARIATION TABLE









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Engine Speed (RPM) Allowable Variation (RPM)
1000 .................................. 900-1100
3000 ................................. 2850-3150
5000 ................................. 4750-5250
6000 ................................. 5700-6300









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TEMPERATURE GAUGE
CAUTION: DO NOT connect sender wire directly to ground during test.
Circuit Test
Disconnect temperature sender wire from sending unit. Connect
a 12-volt, 3.4-watt test bulb between connector terminal and ground.
Turn ignition switch to ON position. If test bulb flashes and
temperature gauge needle moves, go to SENSOR RESISTANCE TEST. If test
light does not flash and gauge needle does not move, repair wiring to
sending unit.
Sensor Resistance Test
Remove thermosensor (sending unit) from engine block. Place
sending unit in hot water of 158
F (70C) temperature. Check sensor
resistance with an ohmmeter. Thermosensor resistance should be 90-117
ohms at 158
F (70C). If thermosensor resistance in okay, go to GAUGE
RESISTANCE TEST. Replace thermosensor if resistance is not as
specified.
Gauge Resistance Test
Remove instrument cluster from instrument panel. See
INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Measure resistance
between temperature gauge terminals at rear of cluster or combination

NOTE: When routing speedometer cable, DO NOT bend cable sharply.
Minimum bending radius is 6" (150 mm). Speedometer cable
length varies with transmission type.
Removal
Disconnect speedometer cable from transmission or transaxle.
Remove instrument cluster from instrument panel. See
INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Disconnect
speedometer cable from instrument cluster and/or adapter (if
equipped). Remove speedometer cable from firewall grommet.
Installation
Install new cable. Insert cable until stopper seats properly
in groove on rear of speedometer housing. Pull speedometer cable
through firewall grommet until cable marking is visible from engine
compartment. Install adapter onto speedometer cable (if equipped).
Install instrument cluster. See INSTRUMENT CLUSTER under REMOVAL &
INSTALLATION. Install cable onto transmission or transaxle. Check for
proper operation.
NOTE: An improperly installed cable can cause fluctuating meter,
noise or damaged harness inside instrument panel.
WIRING DIAGRAMS
See appropriate chassis wiring diagram in the WIRING DIAGRAMS
Section.

federal law. Warranty period is 5 years or 50,000 miles, whichever
occurs first. Covers remedy of non-conformity if vehicle fails to pass
an EPA approved emissions test during the first 24 months or 24,000
miles of this warranty. During the remainder of the warranty period,
covers remedy of non-conformity resulting from failure of certain
emission-related components. See copy of warranty for specific
components covered.
EMISSION SYSTEM WARRANTY (CALIFORNIA)
Warrants that the vehicle was designed, built and equipped to
conform at the time of sale with all applicable U.S. and California
emission standards, and that the emission control system is free from
defects in materials or workmanship which would cause the vehicle not
to meet these standards for 5 years or 50,000 miles, whichever occurs
first. On 1990 and later models, warranty coverage is 3 years or 50,
000 miles, whichever occurs first, with certain emission-related
components covered for 7 years or 70,000 miles, whichever occurs
first. See copy of warranty for specific components covered.
FUSES & CIRCUIT BREAKERS
FUSE PANEL LOCATION
The electrical system is protected against shorts by fuses
that are designed to fail, to prevent damage to the wire harness. The
fuse block is located under the instrument panel on the driver's side.
If a fuse is blown, locate the cause before replacing the fuse. Spare
fuses are contained in the fuse block.
FUSE PANEL IDENTIFICATION (1983-91)
Fig. 8: Fuse Panel Identification (1983-91)
Courtesy of Mitsubishi Motor Sales of America, Inc.
Fuse & Circuit Breaker Identification

Terminal
Application Numbers
Total Resistance .................... 1 & 4
Variable Resistance
Montero, Pickup 3.0L,
& Ram-50 3.0L .................... 1 & 3
All Others ........................ 2 & 4









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VEHICLE SPEED SENSOR
1) Vehicle Speed Sensor (VSS) is located in speedometer
assembly. Connect an ohmmeter between sensor terminals on back of
instrument panel. See Fig. 7 or 8.
2) Rotate speedometer cable. For each revolution of
speedometer cable, sensor should make and break continuity 4 times. If
ohmmeter reading does not fluctuate between continuity and no
continuity or if sensor does not make and break continuity 4 times for
each revolution, replace sensor.
Fig. 7: VSS Sensor Connector Term. ID (Montero)
Courtesy of Mitsubishi Motor Sales of America.
Fig. 8: VSS Sensor Connector Term. ID (P/U & Ram 50)
Courtesy of Mitsubishi Motor Sales of America.
MOTORS, RELAYS & SOLENOIDS

Improper gate plate See STEERING COLUMN
adjustment article









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Excess Play in Instrument panel bracket Tighten bolts and check
Column bolts loose bracket
Broken weld nut on jacket See STEERING COLUMN
article
Instrument bracket capsule See STEERING COLUMN
sheared article
Column bracket/jacket Tighten bolts and check
bolts loose bracket









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Steering Locks Release lever mechanism See STEERING COLUMN
in Gear article









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SUSPENSION TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC SUSPENSION TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE CORRECTION








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Front End Noise Loose or worn wheel See Wheel Bearing
Adjustment in
SUSPENSION
Worn shocks or shock Replace struts or strut
mountings mountings
Worn struts or strut Replace struts or strut
mountings mountings
Loose or worn lower control See SUSPENSION
arm
Loose steering gear-to- See STEERING
frame bolts
Worn control arm bushings See SUSPENSION
Ball joints not lubricated Lubricate ball joints &
see Ball Joint Checking
in SUSPENSION









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Front Wheel Tires or wheels out of Check tire balance
Shake, Shimmy, balance
or Vibration
Incorrect wheel alignment See WHEEL ALIGNMENT
Drive shaft unbalanced Check drive shaft
balance

Montero
Remove wiper switch from instrument panel and disconnect
wiring connector. Place wiper switch in OFF position. Continuity
should exist between terminals No. 2 and 5. See Fig. 5. Place wiper
switch in ON position. Continuity should exist between terminals No. 2
and 7. Place wiper switch in INT position. Continuity should exist
between terminals No. 2 and 5, and 3 and 8. Depress washer switch.
Continuity should exist between terminals No. 6 and 7.
Fig. 5: Identifying Rear Wiper Switch Terminals
Courtesy of Mitsubishi Motor Sales of America.
REMOVAL & INSTALLATION
FRONT WIPER MOTOR
Removal & Installation
Remove wiper motor attaching bolts. Pull motor out just
slightly. Disconnect wiper linkage from motor assembly and remove
motor. To install, reverse removal procedure.
FRONT WIPER SWITCH
NOTE: Front wiper switch is integral with combination switch on
steering column. See appropriate STEERING COLUMN SWITCHES

article in the ACCESSORIES/SAFETY EQUIP Section.
REAR WIPER MOTOR
Removal & Installation
Remove wiper blade and arm assembly. Remove tailgate trim, 2
bolts and wiper motor. To install, reverse removal procedure. Ensure
grommet is in good condition.
REAR WIPER RELAY
Removal & Installation
Rear wiper relay (Except Montero), is located behind right
rear quarter trim. On Montero, relay is located to right of heater
blower housing.
REAR WIPER SWITCH
Removal & Installation
Using flat-bladed tool, pry rear wiper switch from instrument
panel and remove wiring connector. To install, connect wiring
connector, and push switch into instrument panel.
WIRING DIAGRAMS
See appropriate chassis wiring diagram in the WIRING DIAGRAMS
section.