head MITSUBISHI MONTERO 1998 Repair Manual

INSTRUMENT PANEL
1998 Mitsubishi Montero
1998 ACCESSORIES & EQUIPMENT
Mitsubishi - Instrument Panels
Eclipse, Galant, Mirage, Montero, Montero Sport, 3000GT
DESCRIPTION & OPERATION
WARNING: Deactivate air bag system before performing any service
operation. See AIR BAG RESTRAINT SYSTEMS article. Do not
apply electrical power to any component on steering column
without first deactivating air bag system. Air bag may
deploy.
Instrument cluster includes speedometer, fuel gauge and
temperature gauge. Fuel gauge has a built-in voltage limiter to keep
voltage supply to gauges at 7 volts. Some models may also have an
ammeter, oil pressure gauge, tachometer, voltmeter and/or turbo boost
pressure gauge. Oil pressure gauge uses full battery voltage.
Tachometer operates by pulse feed.
COMPONENT LOCATIONS
COMPONENT LOCATIONS TABLE








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Component Location
Engine Coolant Temperature (ECT) Sensor
Eclipse, Galant, Montero
& Montero Sport ................. On Thermostat Housing
Mirage ........................ On Rear Of Cylinder Head
3000GT ........... On Cylinder Head, Below Ignition Coil
Input Speed Sensor
Eclipse ........................... On Side Of Transaxle
Output Speed Sensor
Eclipse ........................... On Side Of Transaxle
Vehicle Speed Sensor
Eclipse, Galant,
Mirage & 3000GT ................... On Top Of Transaxle
Montero & Montero Sport ...... On Transmission Tailshaft









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TROUBLE SHOOTING
FUEL/TEMPERATURE GAUGE NOT WORKING
Check for blown fuse, faulty voltage limiter and faulty
relay. Ensure sending unit connections are clean and tight. Test
sending unit for correct operation. Tighten connections in instrument
cluster.
SPEEDOMETER NOT WORKING
On mechanical-type speedometers, ensure speedometer cable is
properly connected and correctly routed. If speedometer pointer and/or
odometer still do not work, replace speedometer cable or speedometer
assembly.
On electric-type speedometers, check for faulty vehicle speed
sensor, input/output sensors or faulty circuit. For testing, see

1 - 60 Amp
Battery
2 - 100 Amp
Alternator
3 - 20 Amp (Yellow)
Multipoint Injection
4 - 40 Amp
Ignition Switch
5 - 30 Amp (Green)
Rear Window Defogger
6 - 30 Amp (Green)
Power Window Control
7 - 30 Amp (Green)
Air Conditioner
8 - 40 Amp
Lights
9 - 10 Amp (Red)
AIR CONDITIONING & HEAT Compressor
10 - 25 Amp
Condenser Fan
11 - 10 Amp (Red)
Tail Lights
12 - 10 Amp (Red)
Headlight Upper Beam
13 - 10 Amp (Red)
Hazard Warning Flashers

1) Front HO2S is mounted in exhaust pipe below exhaust
header. Rear HO2S is mounted behind catalytic converter. HO2S is
equipped with a permanent pigtail which must be protected from damage
when HO2S is removed. Ensure HO2S is free of contaminants. Avoid using
cleaning solvents of any type.
2) HO2S may be difficult to remove when engine temperature is
less than 120
F (48C). If using original sensor, always use anti-
seize compound on threads before installation. New sensor threads are
precoated with anti-seize. Tighten HO2S to specification. See
TORQUE SPECIFICATIONS .
THROTTLE BODY
Removal
1) Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE.
Drain enough coolant to ensure coolant level is below throttle body.
Disconnect air intake hose.
2) Remove accelerator, cruise control and A/T throttle valve
cables (if equipped). Disconnect fuel vapor hose, electrical harness
connector, vacuum hose and coolant hoses. Remove throttle body
retaining bolts.
Disassembly
Remove throttle position sensor. Remove idle air control
motor. Remove throttle bracket and connector bracket (if equipped).
Remove idle position switch and adjusting nut (if equipped).
CAUTION: DO NOT remove throttle valve. DO NOT use cleaning solvents
on throttle position sensor, idle air control motor or idle
position switch.
Cleaning
1) Clean all parts except throttle position sensor, idle air
control motor and idle position switch in solvent.
WARNING: Safety glasses MUST be worn whenever compressed air is used
for parts cleaning.
2) Check vacuum port and passage for clogging. Clean vacuum,
vapor and fuel passages using compressed air.
Reassembly
To reassemble, reverse disassembly procedure.
Installation
To install, reverse removal procedure.
THROTTLE POSITION (TP) SENSOR
Removal & Installation
Throttle Position (TP) sensor is located on throttle body.
Disconnect TP sensor electrical connector. Remove TP sensor screws and
TP sensor. To install, reverse removal procedure. Tighten TP sensor
screws to specification. See TORQUE SPECIFICATIONS. For TP sensor
adjustment procedure, see D - ADJUSTMENTS article.
TURBOCHARGERS
Removal (Eclipse)
1) Disconnect negative battery cable. Drain engine coolant
and oil. On models equipped with A/C, remove condenser fan motor
assembly. Remove front heated oxygen sensor. Remove oil dipstick guide
and "O" ring.

STEERING COLUMN SWITCHES
1998 Mitsubishi Montero
1998 ACCESSORIES & EQUIPMENT
Mitsubishi - Steering Column Switches
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
* PLEASE READ THIS FIRST *
WARNING: Deactivate air bag system before performing any service
operation. See AIR BAG RESTRAINT SYSTEMS article. DO NOT
apply electrical power to any component on steering column
without first deactivating air bag system. Air bag may
deploy.
DESCRIPTION
Headlight and turn signal switch and wiper/washer switch are
part of combination switch. For information on cruise control switch
(right side of column), see appropriate CRUISE CONTROL SYSTEMS
article.
COMPONENT LOCATIONS
COMPONENT LOCATIONS TABLE








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Component Location
Headlight Relay .................... In Engine Compartment
Fuse/Relay Block
Foglight Relay
Except Montero & Montero Sport ... In Engine Compartment
Fuse/Relay Block
Taillight Relay
Except Montero Sport ............. In Engine Compartment
Fuse/Relay Block
Turn Signal/Hazard Flasher Unit
Diamante ............................ At Left Kick Panel
Eclipse .......................... Behind Center Of Dash
Except Diamante & Eclipse ..... Behind Left Side Of Dash
Wiper Relay
Front
Except Diamante & 3000GT .......... On Steering Column
Rear
Eclipse ........................ Behind Center Of Dash
Montero & Montero Sport .............. On Relay Block,
Behind Left Side Of Dash
3000GT ................ Behind Left Rear Quarter Panel









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COMPONENT TESTS
DIAMANTE
Turn Signal, Lighting & Dimmer/Passing Switch Tests
Disconnect steering column combination switch connector. See
Fig. 1 . Check continuity between specified terminals. See
STEERING COLUMN COMBINATION SWITCH CONTINUITY CHECK TABLE (DIAMANTE) .

If continuity is not as specified, replace steering column combination
switch.
STEERING COLUMN COMBINATION SWITCH CONTINUITY CHECK TABLE (DIAMANTE)









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Switch Check Continuity
& Position Between Terminals No.
Lights Switch (1)
Foglight ON ...................................... 3 & 7
Headlight ON .................................. 2, 5 & 8
Taillight ON ..................................... 5 & 8
Dimmer Switch ( 2)
Low Beam ......................................... 3 & 4
High Beam ........................................ 4 & 6
Passing
Low Beam ............................. 1, 2 & 6; 3 & 4
High Beam ............................ 1, 2 & 6; 4 & 6
Turn Signal Switch ( 3)
Left Turn ........................................ 5 & 8
Right Turn ....................................... 7 & 8
( 1) - Check at connector "A". See Fig. 2.
( 2) - Check at connector "B". See Fig. 2.
( 3) - Check at connector "C". See Fig. 2.









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Fig. 1: Exploded View Of Steering Column (Diamante)
Courtesy of Mitsubishi Motor Sales of America

between specified terminals. See Fig. 12. If continuity is not as
specified, replace key reminder switch.
Lighting & Turn Signal Switch Tests
Disconnect steering column combination switch connector.
Check continuity between specified terminals. See
STEERING COLUMN COMBINATION SWITCH CONTINUITY CHECK TABLE (GALANT) .
See Figs. 11 and 13. If continuity is not as specified, replace
steering column combination switch.
STEERING COLUMN COMBINATION SWITCH CONTINUITY CHECK TABLE (GALANT)









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Switch Check Continuity
& Position Between Terminals No.
Lights Switch
Headlight ON .............. ( 1) 1 & ( 2) 6; ( 2) 5 & ( 2) 7
Taillight ON ( 2) ................................. 5 & 7
Dimmer Switch ( 1)
Low Beam ......................................... 4 & 6
High Beam ........................................ 3 & 4
Passing
Low Beam ............................. 1, 2 & 6; 3 & 4
High Beam ............................ 1, 2 & 6; 4 & 6
Turn Signal Switch ( 2)
Left Turn ........................................ 3 & 8
Right Turn ....................................... 8 & 9
( 1) - Check at connector "A". See Fig. 13.
( 2) - Check at connector "B". See Fig. 13.









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Fig. 13: Identifying Lighting & Turn Signal Switches (Galant)
Courtesy of Mitsubishi Motor Sales of America
Wiper/Washer Switch Tests
Disconnect steering column combination switch connector.

Check continuity between specified terminals. See Figs. 19 and 21. If
continuity is not as specified, replace steering column combination
switch.
Fig. 21: Testing Lighting & Turn Signal Switches (Montero)
Courtesy of Mitsubishi Motor Sales of America
Headlight Washer Switch Test
Disconnect steering column combination switch connector.

Check continuity between specified terminals. See Figs. 19 and 22. If
continuity is not as specified, replace steering column combination
switch.
Fig. 22: Testing Headlight Washer Switch (Montero)
Courtesy of Mitsubishi Motor Sales of America
Rear Wiper Switch Test
Disconnect steering column combination switch connector.

deploys.
* After air bag deploys, air bag surface may contain deposits
of sodium hydroxide, which irritate skin. Always wear safety
glasses, rubber gloves and long-sleeved shirt during clean
up. Wash hands using mild soap and water. Follow correct
clean-up and disposal procedures.
* Because of critical system operating requirements, DO NOT
service any SRS components. Repairs are only made by
replacing defective part(s).
* DO NOT allow any electrical source near inflator on the back
of air bag module.
* When carrying live air bag module, trim cover should be
pointed away from body to minimize injury in case of
accidental air bag deployment.
* If SRS is not fully functional for any reason, DO NOT drive
vehicle until system is repaired and is fully functional. DO
NOT remove bulbs, modules, sensors or other components, or in
any way disable system from operating normally. If SRS is not
functional, park vehicle until repairs are made.
REMOVAL & INSTALLATION
STEERING WHEEL
WARNING: Wait at least 60 seconds after disconnecting negative
battery cable before servicing SRS. System reserve capacitor
maintains SRS voltage for about 60 seconds after battery is
disconnected. Servicing SRS before 60-second period may
cause accidental air bag deployment and possible personal
injury.
Removal
Disable air bag. See DISABLING & ACTIVATING AIR BAG SYSTEM .
Ensure steering wheel is straight ahead. Remove air bag. Place
reference mark on steering wheel and steering column shaft for
installation reference. Remove steering wheel nut and washer. Using
steering wheel puller, remove steering wheel.
CAUTION: DO NOT hammer on steering wheel during removal or
installation, as it may damage steering column.
Installation
To install, reverse removal procedure. Ensure reference marks
are aligned. Tighten fasteners to specification. See
TORQUE SPECIFICATIONS . Activate air bag. See DISABLING & ACTIVATING
AIR BAG SYSTEM.
COMBINATION SWITCH
CAUTION: When installing steering wheel, if rotating part of
clockspring is not properly centered with steering column
and front wheels, clockspring failure will result.
Removal & Installation
Remove lower instrument cover and lower heater duct. Remove
air bag and steering wheel. See STEERING WHEEL under
REMOVAL & INSTALLATION . Remove upper and lower steering column covers.
Disconnect clockspring electrical connector. Remove screws attaching
colckspring and remove clockspring. Disconnect combination switch
electrical connectors. Remove screws and combination switch. To
install, reverse removal procedure.

IGNITION SWITCH
Removal & Installation
1) Remove upper and lower steering column covers. Disconnect
harness connector from ignition switch. Using hacksaw, cut slots in
bolt heads of lock assembly. Using screwdriver, remove bolts and lock
assembly.
2) To install, reverse removal procedure. Tighten new bolts
until heads of bolts sheer off.
STEERING COLUMN
WARNING: Failure to follow air bag service precautions may result in
air bag deployment and personal injury. See AIR BAG SERVICE
PRECAUTIONS. Follow all service precautions before
attempting repairs. After component replacement, perform a
system operational check to ensure proper system operation.
CAUTION: Applying excessive pressure or causing impact to steering
shaft during service may cause column to collapse. Before
removing steering column, ensure wheels are in
straight-ahead position. Note steering wheel location for
installation reference.
Removal
1) Remove steering wheel. Remove combination switch and
ignition switch (if necessary). See STEERING WHEEL under
REMOVAL & INSTALLATION .
2) Remove lower instrument panel cover and air duct.
Disconnect all electrical connections. Disconnect brake pedal return
spring (if equipped). Disconnect gearshift control cable.
3) Remove bolts for dust cover at firewall. Remove bolt from
clamp at steering gear. Remove steering column bolts and remove
steering column.
Installation
To install, reverse removal procedure. Apply sealant (3M ATD
8663) to dust cover bolts before installing. Tighten bolts to
specification. See TORQUE SPECIFICATIONS .
OVERHAUL
STEERING COLUMN
WARNING: Failure to follow air bag service precautions may result in
air bag deployment and personal injury. See AIR BAG SERVICE
PRECAUTIONS. Follow all service precautions before
attempting repairs. After component replacement, perform a
system operational check to ensure proper system operation.
NOTE: Vehicle steering column is not repairable. See below for
joint assembly and steering lock removal and installation.
Disassembly
Remove steering column from vehicle. See STEERING COLUMN
under REMOVAL & INSTALLATION . Remove clamp bolt from joint assembly.
See Fig. 1 . Remove assembly. Remove lower boot, upper boot and dust
cover from joint assembly. To remove steering lock, use a hacksaw to
cut bolts at steering lock bracket side. Remove steering lock and
bracket.