1991 MITSUBISHI MONTERO ECO mode

Ignition Coil Resistance (Eclipse 2.0L)
1) Using a DVOM, measure primary coil resistance between
ignition coil connector terminals No. 2 and No. 4 (coils for cylinders
No. 1 and No. 4) and between terminals No. 4 and No. 1 (coils for
cylinders No. 2 and No. 3). See Fig. 2.
2) Measure secondary coil resistance between coil towers for
cylinders No. 1 and No. 4 and between coil towers for cylinders No. 2
and No. 3. See Fig. 3. Primary and secondary coil resistance should be
within specification. See DIS IGNITION COIL RESISTANCE table.
DIS IGNITION COIL RESISTANCE TABLE Ohms @ 68
F (20C)








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Application Primary Secondary
All Models ........... .77-.95 .......... 10.3-13.9









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Power Transistor (Eclipse)
1) Disconnect power transistor connector. Using an analog
ohmmeter, connect positive ohmmeter lead to terminal No. 7 and
negative lead to terminal No. 3. See Fig. 4. Ensure there is no
continuity.
Fig. 4: Power Transistor Connector ID (Eclipse)
Courtesy of Mitsubishi Motor Sales of America.
2) Using a 1.5-volt dry cell battery, connect positive end of
1.5-volt battery to power transistor terminal No. 6 and negative end
to terminal No. 3. Ohmmeter should now read continuity between power
transistor terminals No. 7 and No. 3.
3) Connect positive end of 1.5-volt battery to power
transistor terminal No. 2 and negative end to terminal No. 3. Connect
positive ohmmeter lead to terminal No. 1 and negative lead to terminal
No. 3. Ohmmeter should read continuity. Replace power transistor if it
does not test as described.
Power Transistor (Colt Vista, Galant, Montero, Pickup &
Ram-50)
1) Disconnect power transistor connectors. Using a DVOM,
connect positive ohmmeter lead to terminal No. 2 and negative lead to
terminal No. 3. See Fig. 5. Ensure there is no continuity.

Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
(1) - Inoperative includes intermittent operation or out of OEM
specification.
( 2) - Determine cause and correct prior to repair or
replacement of part.









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ROTORS
Determine the need to recondition based upon individual rotor
conditions that follow. Friction material replacement does not require
rotor reconditioning unless other justifications exist. DO NOT
recondition new rotors unless they are being pressed or bolted onto an
existing hub. It is not necessary to replace rotors in axle sets.
However, when replacing or reconditioning a rotor due to the
conditions that follow, you may suggest reconditioning of the other
rotor on the same axle to eliminate uneven braking behavior.
Determine the need to replace based upon the individual rotor
conditions that follow. Reconditioning is defined as machining and
block sanding, or block sanding only. Block sanding is defined as
using 120-150 grit sandpaper with moderate to heavy force for 60
seconds per side. Always wash rotors after servicing or before
installing.
ROTOR INSPECTION









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Condition Code Procedure
Corrosion affecting
structural integrity ... A ........ ( 1) Require replacement.
Cracked ................. B ............ Require replacement.
Hard spots .............. 2 ....... Suggest reconditioning or
replacement of rotor according
to OEM specifications.
Lateral runout (wobble)
exceeds OEM
specifications ......... B ............ Require re-indexing,
reconditioning, or replacement
according to specifications.
Measured thickness is less
than OEM discard
specifications ......... B ............ Require replacement.
Rotor thickness is less
than OEM "machine to"
specifications but thicker
than "discard at"
specifications, and the
rotor does not require
reconditioning ......... 1 ........ ( 2) Suggest replacement.
Rotor thickness will be
less than OEM "machine to"
specifications after
required

CRUISE CONTROL SWITCH FUNCTION TEST
NOTE: If vehicle speed decreases approximately 9 MPH below set
speed, set speed will be cancelled.
1) Cruise control switch is part of multifunction switch
mounted on steering column. To operate cruise control system, turn
ignition on. Turn cruise control switch to ON position. Ensure switch
indicator light comes on.
NOTE: Speed will not set beyond system limit of 90 MPH.
2) With cruise control switch in ON position, drive vehicle
between 25 and 90 MPH. Press and release SET button. Vehicle speed
should stay at set speed. Instrument cluster cruise indicator light
should come on. To increase set speed, turn control switch to RESUME
position and hold until new set speed is reached.
3) To lower set speed, press SET button and hold until new
set speed is reached. To return to set speed after cancellation, move
resume switch from ON to OFF position. Vehicle speed should return to
previous setting before cancellation. Set speed should cancel when any
of the following occurs:
* Brake pedal is pressed.
* Clutch pedal is pressed.
* Transmission is shifted to Neutral or Park.
* Cruise control main switch is turned off.
* Ignition switch is turned off.
SELF-DIAGNOSTICS
1) Self-diagnostics should be performed when cruise control
cancels without the driver using normal cancel modes. Diagnosis
connector is located on right side of fuse box. Use analog voltmeter
or Multi-Use Tester (MB991341) for code retrieval.
2) Use multi-use tester according to operating instructions
provided with tester. Connect leads of analog voltmeter between cruise
control terminal and ground terminal of self-diagnostic connector. See
Fig. 6 . Read voltmeter needle sweeps to determine trouble code.
NOTE: On 1991 models, codes No. 13, 14, 15, 16 and 17 will be
displayed whether malfunction is present or not.
3) Once trouble codes have been displayed, see SELF-
DIAGNOSTIC CODE CHART to determine appropriate CIRCUIT TEST. See
Fig. 7 or 8.
4) To clear trouble codes, either disconnect battery cable or
turn ignition on. Turn main cruise control switch and set switch to ON
position. Within one second turn resume switch to ON position.
5) Hold stoplight switch and cruise control switch in ON
position for more than 5 seconds. Verify codes are cleared.
Fig. 6: Identifying Self-Diagnostic Connector Terminals
Courtesy of Mitsubishi Motor Co.

\003P - E G R F U NCTIO N T E STIN G

1991 M it s u bis h i M onte ro
1989-95 ENGINE PERFORMANCE
Chrysler Motors/Mitsubishi Corp. EGR Function Testing
All Models
EGR FUNCTION TESTING
Colt Wagon 1.8L, Montero (A/T), Raider (A/T), Sigma,
Van/Wagon & All Other Federal Models (Ported EGR Valve)
1) Disconnect Green-striped hose from throttle body and
connect a vacuum pump to hose end. Plug nipple where hose was
connected to throttle body. With engine temperature 122
F (50C) or
less, and engine idling, apply vacuum to hose. If idle does not change
and vacuum leaks down, system is functioning properly.
2) With engine temperature 176-205
F (80-95C) and engine
idling, apply 2 in. Hg to hose. If idle does not change, and vacuum
holds, system is functioning properly.
3) Apply 7.7 in. Hg. If vacuum holds and idle becomes
unstable or engine stalls, EGR system is functioning properly.
Montero (M/T), Raider (M/T) & All Other California
Models (Ported EGR Valve)
1) Connect a vacuum tee into Green-striped hose from EGR
valve and connect a vacuum pump to vacuum tee. With engine temperature
68
F (20C) or less and engine idling, snap throttle opened and
closed. If no change in vacuum reading on vacuum pump gauge is
detected, system is functioning properly.
2) With engine temperature 158
F (70C) or higher and engine
idling, snap throttle open to race engine. If vacuum is now indicated
on vacuum pump gauge, system is functioning properly.
3) Using a vacuum pump, apply specified vacuum to open EGR
valve. See appropriate EGR VALVE SPECIFICATIONS table. If idle becomes
unstable or engine stalls, EGR system is functioning properly.
EGR VALVE SPECIFICATIONS TABLE (1989 Models)









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Application Closed Open
In. Hg In. Hg
Colt, Colt Wagon,
Mirage ....................... 1.8 ................ 7.7
Colt Vista .................... 2.1 ................ 6.8
Galant, Sigma ................. 1.7 ................ 7.5
Montero, Raider,
Van/Wagon .................... 1.9 ................ 6.7









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EGR VALVE SPECIFICATIONS TABLE (1990 Models)








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Application Closed Open
In. Hg In. Hg
Colt, Colt 200, Mirage
& Colt Wagon ................. 1.8 ................ 7.7
Colt Vista .................... 2.1 ................ 6.8
Eclipse ....................... 1.8 ................ 8.5
Galant ........................ 1.7 ................ 7.5
Pickup, Ram-50 ................ 1.2 ................ 9.4
Precis ........................ 1.0 ................ 3.3
Sigma ......................... 1.6 ................ 8.7

\003ELE C TR O STA TIC D IS C HAR G E W AR NIN G - B ASIC IN FO RM ATIO N

1991 M it s u bis h i M onte ro
GENERAL INFORMATION
Electrostatic Discharge (ESD) Warning - Basic Information
All Makes amd Models
* PLEASE READ THIS FIRST *
NOTE: This article is intended for general information purposes
only.
INTRODUCTION
All Electrostatic Discharge (ESD) sensitive components
contain solid state circuits (transistors, diodes, semiconductors)
that may become damaged when contacted with an electrostatic charge.
The following information applies to all ESD sensitive devices. The
ESD symbol shown in Fig. 1 may be used on schematics to indicate which
components are ESD sensitive. See Fig. 1. Although different
manufactures may display different symbols to represent ESD sensitive
devices, the handling and measuring precautions and procedures are the
same.
Fig. 1: Sample ESD Symbol
HANDLING STATIC-SENSITIVE CIRCUITS/DEVICES

EM IS SIO N C O NTR O L V IS U AL IN SPEC TIO N P R O CED URES

1991 M it s u bis h i M onte ro
1983-98 GENERAL INFORMATION
Emission Control Visual Inspection Procedures
All Models
* PLEASE READ THIS FIRST *
This article is provided for general information only. Not
all information applies to all makes and models. For more complete
information, see appropriate article(s) in the ENGINE PERFORMANCE
Section.
EMISSION CONTROL LABELS
The vehicle manufacturer's emission control label, also known
as the underhood tune-up label or Vehicle's Underhood Emission Control
System (VECI) label, is located in the engine compartment. Information\
regarding year model of vehicle, engine size, number of cylinders,
emission equipment or type, engine tune-up specifications, whether
vehicle was manufactured for sale in California or is a Federal
vehicle, vacuum hose routing schematic, etc., can be found on this
label. See Fig. 1.
In addition to the VECI label, some emission control
inspection and maintenance programs may require an additional label to
be affixed to the vehicle in special circumstances. For example, in
California, a Bureau Of Automotive Repair (BAR) engine label may be
affixed to the left door post. A BAR engine label is only used when
the vehicle has an engine change, approved modification or is a
Specially Constructed (SPCN) or an acceptable Gray market vehicle.
Check your state's emission control inspection and maintenance laws to
determine if a similar label is used.
Fig. 1: Typical Emission Control Label
Courtesy of General Motors Corp.
EMISSION CONTROL VISUAL INSPECTION
* PLEASE READ THIS FIRST *
NOTE: The following emission control visual inspection procedures
should be used as a guide only. When performing a visual
inspection, always follow your state's recommended

\003
* E XH AU ST S YSTE M U NIF O RM IN SPEC TIO N G UID ELIN ES *

1 991 M it s u bis h i M onte ro
GENERAL INFORMATION
Exhaust Systems Motorist Assurance Program
Standards For Automotive Repair
All Makes and Models
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
CONTENTS
Motorist Assurance Program (MAP)
OVERVIEW OF MOTORIST ASSURANCE PROGRAM
OVERVIEW OF SERVICE REQUIREMENTS AND SUGGESTIONS
Exhaust
CATALYTIC CONVERTERS
EXHAUST AND TAIL PIPES
EXHAUST CONNECTIONS
HANGERS
HEAT RISERS (MECHANICAL EFE DEVICES)
HEAT SHIELDS
MANIFOLDS (CAST AND TUBE TYPE)
MECHANICAL EFE DEVICES
MUFFLERS AND RESONATORS
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
OVERVIEW OF MOTORIST ASSURANCE PROGRAM
The Motorist Assurance Program is the consumer outreach
effort of the Automotive Maintenance and Repair Association, Inc.
(AMRA). Participation in the Motorist Assurance Program is drawn from
retailers, suppliers, independent repair facilities, vehicle
manufacturers and industry associations.
Our organization's mission is to strengthen the relationship
between the consumer and the auto repair industry. We produce
materials that give motorists the information and encouragement to
take greater responsibility for their vehicles-through proper,
manufacturer-recommended, maintenance. We encourage participating
service and repair shops (including franchisees and dealers) to adopt
(1) a Pledge of Assurance to their Customers and (2) the Motorist
Assurance Program Standards of Service. All participating service
providers have agreed to subscribe to this Pledge and to adhere to the
promulgated Standards of Service demonstrating to their customers that
they are serious about customer satisfaction.
These Standards of Service require that an inspection of the
vehicle's (problem) system be made and the results communicated to the\
customer according to industry standards. Given that the industry did
not have such standards, the Motorist Assurance Program successfully
promulgated industry inspection communication standards in 1994-95 for
the following systems: Exhaust, Brakes, ABS, Steering and Suspension,
Engine Maintenance and Performance, HVAC, and Electrical Systems.
Further, revisions to all of these inspection communication standards
are continually re-published. In addition to these, standards for
Drive Train and Transmissions have recently been promulgated.
Participating shops utilize these Uniform Inspection & Communication

4 * High
5 * Premium
7 - Body Type
1 * 5-Door Wagon
2 * 2-Door Canvas Top
3 * 2-Door Metal Top (1983-86)
3 * 3-Door Metal Top Or Van (1987 & Newer Models)
8 - Engine Type
E * 2.6L 4-Cylinder
H * 3.0L V6
M * 3.5L V6
S * 3.0L V6
7 * 2.6L 4-Cylinder (1983)
9 - VIN Check Digit
* 1 Through 9 Or X
10 - Vehicle Model Year
D * 1983
E * 1984
F * 1985
G * 1986
H * 1987
J * 1988
K * 1989
L * 1990
M * 1991
N * 1992
P * 1993
R * 1994
S * 1995
T * 1996
11 - Assembly Plant
Y * Ohye, Japan (1983)
Y * Nagoya, Japan (1984)
J * Nagoya, Japan (1985-96)
12 - Transmission Code (1983-85)
4 * 5-Speed M/T (1984-85 Federal Vehicles)
5 * 5-Speed M/T (1984-85 California Vehicles)
7 * 5-Speed M/T (1983 Federal Vehicles)
7 * A/T (1984-85 Federal Vehicles)
8 * A/T (1984-85 California Vehicles)
12-17 - Serial Number (1986-96)
* Sequential Production Number
13-17 - Serial Number (1983-85)
* Sequential Production Number
MAINTENANCE SERVICE INFORMATION
SEVERE & NORMAL SERVICE DEFINITIONS
NOTE: Use the Severe Service schedule if the vehicle to be serviced
is operated under ANY (one or more) of these conditions:
Service is recommended at mileage intervals based on vehicle
operation. Service schedules are based on the following primary