Mitsubishi Montero (1998+). Manual — part 206

See TURBOCHARGER under AIR INDUCTION SYSTEMS.

FUEL SYSTEM

FUEL DELIVERY

NOTE: For fuel system pressure testing, see

F - BASIC TESTING article.

Fuel Pressure Regulator Control Solenoid Valve (Turbo Models)

See G - TESTS W/CODES article.

FUEL CONTROL

Fuel Injectors

See G - TESTS W/CODES article.

IDLE CONTROL SYSTEM

ELECTRICAL LOAD SWITCH

3000GT (DOHC)

1) Turn ignition off. Disconnect PCM connector. See

POWERTRAIN CONTROL MODULE (PCM) LOCATION table under COMPUTERIZED

ENGINE CONTROLS. Go to next step.

2) Turn headlights on. Using DVOM, check voltage between PCM

connector terminal No. 58 and chassis ground. If battery voltage is

present, turn headlights off and go to next step. If battery voltage

is not present, check and repair circuit between headlight relay

connector and PCM connector.

3) Turn defogger switch on. Using DVOM, check voltage between

PCM connector terminal No. 58 and chassis ground. If battery voltage

is present, turn defogger switch off and go to next step. If battery

voltage is not present, check and repair circuit between defogger

relay connector and PCM connector.

4) Turn blower switch on. Using DVOM, check voltage between

PCM connector terminal No. 58 and chassis ground. If battery voltage

is present, turn blower switch off and go to next step. If battery

voltage is not present, check and repair circuit between blower switch

connector and PCM connector.

5) If battery voltage is present and preceding tests do not

show any system or component malfunction and PCM is suspected,

substitute PCM with known-good unit and retest system.

IDLE AIR CONTROL (IAC) MOTOR

For testing procedures, see G - TESTS W/CODES article.

IGNITION SYSTEM

NOTE: For basic ignition checks, see F - BASIC TESTING article.

TIMING CONTROL SYSTEMS

Camshaft Position Sensor

See G - TESTS W/CODES article.

Crankshaft Position Sensor

See G - TESTS W/CODES article.

Knock Sensor

See G - TESTS W/CODES article.

EMISSION SYSTEMS & SUB-SYSTEMS

EXHAUST GAS RECIRCULATION (EGR)

EGR Control Solenoid Valve

See G - TESTS W/CODES article.

FUEL EVAPORATION

EVAP Purge Control Valve

See G - TESTS W/CODES article.

EVAP Purge Control Solenoid Valve

See G - TESTS W/CODES article.

POSITIVE CRANKCASE VENTILATION (PCV)

PCV Valve

Remove PCV valve. Shake valve. Valve should rattle if moving

freely. Apply air pressure to valve. Air should flow freely in one

direction only. Connect PCV valve to vacuum hose and start engine.

Ensure vacuum is flowing through valve.

MISCELLANEOUS CONTROLS

NOTE: Although the controlled devices listed here are not

technically engine performance components, they can affect

driveability if they malfunction.

NOTE: To identify PCM A/C power supply voltage terminals, see

appropriate pin voltage chart in J - PIN VOLTAGE CHARTS

article. To identify PCM A/C power supply circuit, see

appropriate wiring diagram in L - WIRING DIAGRAMS article.

A/C Switch & Compressor Clutch Relay

Using DVOM, check A/C power supply voltage from PCM. Turn

ignition switch to OFF position. Disconnect PCM connector. Turn A/C

switch and ignition switch to ON position. Check voltage between PCM

A/C power supply terminal and chassis ground. If battery voltage is

not as present, check and repair circuit(s).

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

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

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

SPEEDOMETER TEST under COMPONENT TESTS. Repair or replace as

necessary.

TACHOMETER NOT WORKING

Tachometer is serviced as an assembly. If wiring harness is

okay, replace tachometer assembly.

WARNING LIGHTS NOT WORKING

Test for defective sending unit, burned-out bulb and broken

printed circuit. Ensure all connections are clean and tight.

COMPONENT TESTS

BOOST PRESSURE GAUGE (TURBO)

Resistance Test (Eclipse & 3000GT)

1) Remove instrument cluster from instrument panel. See

INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. On 3000GT, remove air

distribution duct and combination gauges.

2) On all models, check resistance between boost pressure

gauge terminals on back of instrument cluster or combination gauges.

See Fig. 1 or 2. Resistance should be 68.2-83.4 ohms on Eclipse, or 72

ohms on 3000GT. If resistance is not as specified, replace gauge.

Fig. 1: Boost Pressure Gauge Test Terminals (Eclipse Turbo)

Courtesy of Mitsubishi Motor Sales of America