1991 MITSUBISHI MONTERO Service Manual

1) Disconnect power transistor connectors. Using a DVOM,
connect positive ohmmeter lead to terminal No. 2 and negative lead to
terminal No. 7. See Fig. 7. Ensure there is no continuity.
2) Using a 1.5-volt dry cell battery, connect positive end of
1.5-volt battery to power transistor terminal No. 8 and negative end
to terminal No. 7. DVOM should now read continuity at power transistor
terminals No. 2 and No. 7. Replace power transistor if it does not
test as described.
Fig. 7: Power Transistor Connector ID (Colt, Summit & Mirage)
Courtesy of Mitsubishi Motor Sales of America.
Power Transistor (Stealth & 3000GT)
When testing power transistor, refer to POWER TRANSISTOR
TESTING (STEALTH & 3000GT) table.
Fig. 8: Power Transistor Connector ID (Stealth & 3000GT)
Courtesy of Mitsubishi Motor Sales of America.
POWER TRANSISTOR TESTING TABLE (STEALTH & 3000GT) (1)









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(2) Analog Ohmmeter (2) With 1.5 V Battery
Cylinders Connected Between Connected Between
Tested Terminals (No 1.5 V Battery) Terminals\
1 & 4 ......... 3 & 7 No Continuity ....... 6 & 7 Continuity
2 & 5 ......... 2 & 7 No Continuity ....... 5 & 7 Continuity
3 & 6 ......... 1 & 7 No Continuity ....... 4 & 7 Continuity
(1) - All tests performed with power transistor disconnected. Replace
power transistor if it does not test as described.
(2) - See Fig. 8 for terminal identification.









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MAGNETIC & OPTICAL IGNITION
Ignition Coil Resistance
1) Using a DVOM, measure primary coil resistance between
positive and negative terminals of coil. See Fig. 9. For ignition coil
terminal identification See Fig. 11 - 13.
2) Measure secondary coil resistance between coil positive
terminal and ignition coil tower. See Fig. 10.
3) Primary and secondary coil resistance should be within
specification. See IGNITION COIL RESISTANCE table.
Fig. 9: Testing Ignition Coil Primary Resistance (6-Cylinder)
Courtesy of Mitsubishi Motor Sales of America.

Fig. 10: Testing Ignition Coil Secondary Resistance (6-Cylinder)
Courtesy of Mitsubishi Motor Sales of America.
Fig. 11: Ign Coil Term ID (Colt, Eclipse, Mirage 1.5L, P/U & Ram 50
2.4L)
Courtesy of Mitsubishi Motor Sales of America.

Fig. 12: Ign Coil Term ID (Colt Vista, Galant 2.0L SOHC & Montero,
P/U & Ram 50 3.0L)
Courtesy of Mitsubishi Motor Sales of America.
Fig. 13: Ignition Coil Terminal ID (Stealth & 3000GT)
Courtesy of Mitsubishi Motor Sales of America.
IGNITION COIL RESISTANCE TABLE - Ohms @ 68
F (20C)








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Application Primary Secondary
1.5L (VIN A) ........... .9-1.2 .......... 20,000-29,000
1.8L (VIN T)
Except Eclipse ....... .72-.88 ......... 10,300-13,900
Eclipse .............. .90-1.2 ......... 19,000-27,000
2.0L (VIN V) ........... .72-.88 ......... 10,800-13,200
2.4L (VIN W) ........... .72-.88 ......... 10,300-13,900
3.0L (VIN B & C) ....... .67-.81 ......... 11,300-15,300
3.0L (VIN S) ........... .72-.88 ......... 10,300-13,900









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IGNITION TIMING
IGNITION TIMING TABLE (Degrees BTDC @ RPM)








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Application (1) Basic (2)(3) Actual
1.5L
Colt, Colt
200 & Mirage ......... 5 @ 600-800 ..... 10 @ 600-800
Colt Vista ............ 5 @ 600-800 ..... 15 @ 600-800
1.6L
Colt, Colt 200
Mirage & Summit ...... 5 @ 650-850 ...... 8 @ 650-850
1.8L
Colt Vista ............ 5 @ 600-800 ..... 15 @ 600-800
Eclipse ............... 5 @ 600-800 ..... 10 @ 600-800
2.0L
Colt Vista
& Galant (VIN V) ..... 5 @ 650-850 ..... 12 @ 650-850
Eclipse ............... 5 @ 650-850 ...... 8 @ 650-850
Galant (VIN R) ........ 5 @ 650-850 ...... 8 @ 650-850
2.4L
Pickup, Ram-50 ........ 5 @ 650-850 ...... 8 @ 650-850
3.0L
Montero,
Stealth & 3000GT ..... 5 @ 600-800 ..... 15 @ 600-800
Pickup & Ram-50 ....... 8 @ 600-800 ..... 15 @ 600-800
(1) - With ignition timing adjustment connector grounded or
vacuum hose (farthest from distributor) disconnected.
(2) - With ignition timing adjustment connector ungrounded
or vacuum hose (farthest from distributor) connected.
Ignition timing may fluctuate.
(3) - If vehicle altitude is more than 2300 ft. above sea
level, actual timing may be advanced.









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SUMMARY
If no faults were found while performing F - BASIC TESTING,
proceed to G - TESTS W/ CODES article in the ENGINE PERFORMANCE
Section. If no hard codes are found in self-diagnostics, proceed to H
- TESTS W/O CODES article in the ENGINE PERFORMANCE Section for
diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.), or
intermittent diagnostic procedures.

\003* B RAK E 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
Brake Systems - Motorist Assurance Program
Standards For Automotive Repair
All Makes & Models
CONTENTS
OVERVIEW OF MOTORIST ASSURANCE PROGRAM
OVERVIEW OF SERVICE REQUIREMENTS AND SUGGESTIONS
ACCELEROMETERS (G SENSOR OR LATERAL)
ACCUMULATORS
ANCHOR PINS
ANTI-LOCK BRAKE SYSTEMS
BACKING PLATES
BRAKE FLUID
BRAKE FRICTION MATERIAL
BRAKE PADS
BRAKE PEDALS
BRAKE SHOES
BRAKE SHOE HARDWARE
BRAKE STOPLIGHT SWITCHES
BULB SOCKETS
BULBS AND LEDS
CALIPER HARDWARE
CALIPERS
CONTROLLERS
DIGITAL RATIO AXLE CONTROLLERS AND BUFFERS (DRAC AND DRAB)
DISABLE SWITCHES
DRUMS
ELECTRICAL PUMPS AND MOTORS
ELECTRONIC CONTROLLERS
FLUID
FLUID LEVEL SENSOR SWITCHES
FOUR WHEEL DRIVE SWITCHES
FRICTION MATERIAL
G SENSORS
HOSES
HYDRAULIC MODULATORS
HYDRO-BOOSTERS
HYDRO-ELECTRIC BOOSTERS (POWERMASTER)
IGNITION DISABLE SWITCHES
LATERAL ACCELERATION SWITCHES
LEDS
LENSES
MASTER CYLINDERS
MODULATORS
MOTORS
PARKING BRAKE SWITCHES
PARKING BRAKE SYSTEMS
PADS
PEDAL TRAVEL SWITCHES
PEDALS
POWERMASTER
PUMPS
PRESSURE DIFFERENTIAL SWITCHES
PRESSURE SWITCHES
RELAYS
ROTORS
SELF-ADJUSTING SYSTEMS

SHOE HARDWARE
SHOES
SOCKETS
SPEED SENSORS (ELECTRONIC WHEEL AND VEHICLE)
STEEL BRAKE LINES
STOPLIGHT SWITCHES
SWITCHES
TIRES
TOOTHED RINGS (TONE WHEEL)
VACUUM BOOSTERS
VACUUM HOSES
VALVES
WHEEL ATTACHING HARDWARE
WHEEL BEARINGS, RACES AND SEALS
WHEEL CYLINDERS
WIRING HARNESSES
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
Standards as part of the inspection process and for communicating
their findings to their customers.
The Motorist Assurance Program continues to work
cooperatively and proactively with government agencies and consumer
groups toward solutions that both benefit the customer and are
mutually acceptable to both regulators and industry. We maintain the
belief that industry must retain control over how we conduct our
business, and we must be viewed as part of the solution and not part
of the problem. Meetings with state and other government officials
(and their representatives), concerned with auto repair and/or
consumer protection, are conducted. Feedback from these sessions is
brought back to the association, and the program adjusted as needed.
To assure auto repair customers recourse if they were not

satisfied with a repair transaction, the Motorist Assurance Program
offers mediation and arbitration through MAP/BBB-CARE and other non-
profit organizations. MAP conducted pilot programs in twelve states
before announcing the program nationally in October, 1998. During the
pilots, participating repair shops demonstrated their adherence to the
Pledge and Standards and agreed to follow the UICS in communicating
the results of their inspection to their customers. To put some
"teeth" in the program, an accreditation requirement for shops was
initiated. The requirements are stringent, and a self-policing method
has been incorporated which includes the "mystery shopping" of
outlets.
We welcome you to join us as we continue our outreach with
your support, both the automotive repair industry and your customers
will reap the benefits. Please visit MAP at our Internet site www.
motorist.org or contact us at:
1444 I Street, NW Suite 700
Washington, DC 20005
Phone (202) 712-9042 Fax (202) 216-9646
January 1999
MAP UNIFORM INSPECTION GENERAL GUIDELINES
OVERVIEW OF SERVICE REQUIREMENTS AND SUGGESTIONS
It is MAP policy that all exhaust, brake, steering,
suspension, wheel alignment, drive-line, engine performance and
maintenance, and heating, ventilation and air conditioning, and
electrical services be offered and performed under the standards and
procedures specified in these sections.
Before any service is performed on a vehicle, an inspection
of the appropriate system must be performed. The results of this
inspection must be explained to the customer and documented on an
inspection form. The condition of the vehicle and its components will
indicate what services/part replacements may be "Required" or
"Suggested". In addition, suggestions may be made to satisfy the
requests expressed by the customer.
When a component is suggested or required to be repaired or
replaced, the decision to repair or replace must be made in the
customer's best interest, and at his or her choice given the options
available.
This section lists the various parts and conditions that
indicate a required or suggested service or part replacement.
Although this list is extensive, it is not fully inclusive. In
addition to this list, a technician may make a suggestion. However,
any suggestions must be based on substantial and informed experience,
or the vehicle manufacturer's recommended service interval and must be
documented.
Some conditions indicate that service or part replacement is
required because the part in question is no longer providing the
function for which it is intended, does not meet a vehicle
manufacturer's design specification or is missing.
Example:
An exhaust pipe has corroded severely and has a hole in it
through which exhaust gases are leaking. Replacement of the
exhaust pipe in this case is required due to functional
failure.
Example:
A brake rotor has been worn to the point where it measures
less than the vehicle manufacturer's discard specifications.