ABS MITSUBISHI MONTERO 1998 Owner's Guide
Page 389 of 1501
DIFFERENTIAL LOCK - REAR
1998 Mitsubishi Montero
1997-98 DRIVE AXLES
Mitsubishi Rear Differential Lock
Montero, Montero Sport
DESCRIPTION & OPERATION
The rear differential lock system is designed to be used only
when low-speed wheel spin occurs in a ditch, or on a slippery or
uneven surface. The indicator light will blink when switch is turned
on as system completes locking operation. After the differential is
locked, the light will stop blinking and remain on.
The rear differential lock system will not lock with vehicle
in 4H or 2H position, and if vehicle speed is greater than 7 MPH.
Vehicle speed should be maintained at less than 12 MPH during rear
differential lock operation.
NOTE: The Anti-lock Brake System (ABS) does not operate when the
rear differential is locked. It is normal for the ABS
warning light to be on at this time.
COMPONENT LOCATIONS
Rear Differential Lock Air Pump
Air pump is located under left side of rear seat.
Rear Differential Lock Control Unit
Control unit is located under left side lower quarter trim
panel in rear compartment.
Rear Differential Lock Switch
Lock switch is located on lower center of instrument panel,
below radio.
Rear Differential Lock Detection Switch
Lock detection switch is located on rear differential
carrier.
TROUBLE SHOOTING
INDICATOR LIGHT FLASHES WHEN LOCK SWITCH IS TURNED ON
If vehicle speed is greater than 7 MPH, reduce speed to less
than 3 MPH. If vehicle speed is less than 7 MPH, rotate steering wheel
to right and left to reset light.
INDICATOR LIGHT FLASHES WHEN LOCK SWITCH IS TURNED OFF
If indicator flashes after lock switch is turned off, depress
and release accelerator several times while driving straight ahead to
reset light.
TESTING
REAR DIFFERENTIAL LOCK AIR PUMP
Page 416 of 1501
VEHICLE SPEED SENSORS
VENTS
VIBRATION DAMPERS
WHEEL ATTACHMENT HARDWARE
WHEEL SPEED SENSORS
WIRING HARNESSES AND CONNECTORS
YOKES AND SLIP YOKES
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 were recently published.
Further, revisions to all of these inspection communication standards
are continually republished. 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
Page 455 of 1501
E - THEORY/OPERATION
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Theory & Operation
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
This article covers basic description and operation of engine
performance-related systems and components. Read this article before
diagnosing vehicles or systems with which you are not completely
familiar.
AIR INDUCTION SYSTEM
NON-TURBOCHARGED ENGINES
Mirage equipped with 1.5L engine uses a Manifold Absolute
Pressure (MAP) sensor instead of a Volume Airflow (VAF) sensor.
Filtered air is ducted to a plenum-mounted throttle body.
All other models use same basic air induction system using a
remote air filter (with VAF sensor) connected to a plenum-mounted
throttle body.
TURBOCHARGED ENGINES
In addition to basic air induction system, turbocharging
system components include turbocharger(s), charge air cooler(s), air\
by-pass valve(s), wastegate actuator(s), wastegate control solenoid
valve(s) and intake duct(s).
Wastegate Control Solenoid Valve(s)
Powertrain Control Module (PCM) energizes solenoid valve(s)\
,
controlling bleed-off rate of turbocharger pressure by wastegate
actuator(s).
COMPUTERIZED ENGINE CONTROLS
Sequential Fuel Injection (SFI) is a computerized engine
control system, which controls fuel injection, ignition timing, idle
speed and emission control systems.
POWERTRAIN CONTROL MODULE (PCM)
PCM, also known as Engine Control Module (ECM), receives and
processes signals from input devices. Operating conditions such as
cold starting, altitude, acceleration and deceleration affect input
device signals. Based on signals received, PCM sends signals to
various components, which control fuel injection, ignition timing,
idle speed and emission control systems. For PCM location, see
PCM LOCATION table.
PCM LOCATION TABLE
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Application Location
Eclipse 2.0L Non-Turbo .......... In Front of Left Front Strut Tower
Page 462 of 1501
ELECTRICAL COMPONENT LOCATOR
1998 Mitsubishi Montero
1998 ELECTRICAL COMPONENT LOCATION
Mitsubishi - Electrical Component Location
Montero
SAFETY PRECAUTION
WARNING: When working on vehicles equipped with Supplemental Restraint
System (SRS), never apply electrical voltage to the system.
This could cause the SRS (air bag) to be deployed.
BUZZERS, RELAYS & TIMERS
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Component Component Location \
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ABS Motor Relay In right rear of engine
compartment, in ABS relay box.
ABS Valve Relay In right rear of engine
compartment, in ABS relay box.
A/C Compressor Relay In engine compartment
relay box.
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Taillight Relay In engine compartment
relay box.
Turn Signal & Hazard Flasher Unit On bracket, behind left side
of dash.
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CIRCUIT PROTECTION DEVICES
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Component Component Location \
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ABS Relay Box In right rear corner of
engine compartment.
Page 469 of 1501
Junction Block Behind left side of dash.
Passenger Compartment Relay Box Behind left side of dash.
Power Seat Relay Box Under driver's seat.
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CONTROL UNITS
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Component Component Location \
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ABS Control Unit Mounted on top of right rear
wheelwell, under metal plate.
A/C Control Unit On top of evaporator case.
Antenna Motor ECU Behind center console.
Auto-Cruise Control ECU Behind center of dash.
Page 470 of 1501
Door Lock Control Unit Behind left side of dash.
ELC 4-Speed Automatic Transmission
Control Module Behind left side of dash.
Engine Control Module (ECM) Behind right kick panel.
Keyless Entry Control Unit Behind right side quarter
panel.
Rear Differential Lock Control Unit Mounted on top of left rear
wheelwell.
SRS Air Bag Control Unit Behind center of dash.
Sun Roof Control Unit On center of roof, behind
sun roof.
Variable Shock Absorber Control Unit Behind left rear wheelwell,
behind quarter panel.
4WD Indicator Control Unit Behind center of dash.
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MOTORS
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Component Component Location \
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Blower Motor Behind right side of dash.
Condenser Fan Motor On left front of engine
compartment.
Fuel Pump In fuel tank.
Headlight Washer Motor Right side of engine
compartment, in washer fluid
reservoir.
Idle Air Control Motor On throttle body.
Motor Antenna Rear of right front wheelwell.
Rear Differential Lock Air Pump On left rear of vehicle.
Rear Washer Motor In rear of cargo area.
Rear Wiper Motor On center of tailgate.
Sun Roof Motor On center of roof, behind
sun roof.
Windshield Washer Motor Bottom of windshield washer
reservoir.
Windshield Wiper Motor On left side of firewall.
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SENDING UNITS & SENSORS
Page 471 of 1501
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Component Component Location \
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ABS Speed Sensors (4) On bracket, on each wheel hub.\
Air Inlet Sensor In evaporator air duct.
Camshaft Position Sensor At bottom of left camshaft
gear.
Crankshaft Position Sensor Above crankshaft gear.
Engine Coolant Temperature Gauge Unit On thermostat housing.
Engine Coolant Temperature Sensor On thermostat housing.
Front Impact Sensor (Left) (SRS) On left front of engine
compartment.
Front Impact Sensor (Right) (SRS) On right front of engine
compartment.
Fuel Gauge Unit In fuel tank.
Fuel Tank Differential Pressure Sensor
(Calif.) Top of fuel tank.
G-Sensor (ABS) In center console, rear of
parking brake lever.
Geomagnetic Sensor (Compass) On top center of dash.
Page 473 of 1501
Outside Air Temperature Sensor Below left headlamp.
Park/Neutral Position Sensor On left side of transmission.
Throttle Position Sensor On throttle body.
Vehicle Speed Sensor (VSS) On transmission tailshaft.
Volume Airflow Sensor In air cleaner duct (includes
intake air temperature sensor
& barometric pressure sensor).
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SOLENOIDS & SOLENOID VALVES
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Component Component Location \
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ABS Hydraulic Unit (w/Built-In
Solenoid Valve) In right rear corner of engine
compartment.
Cruise Control Actuator (w/Built-In
Control Valve & Release Valve)
(Calif.) In right rear of engine
compartment.
Cruise Control Actuator (w/Built-In
Control Valve & Release Valve)
(Federal) In left rear of engine
compartment.
EGR Solenoid In right rear of engine
compartment.
ELC 4-Speed Automatic Transmission
Control Solenoid Inside transmission.
Evaporative Emission Purge Solenoid On front of engine.
Evaporative Emission Ventilation
Solenoid In left rear of engine
compartment.
Solenoid Valves "A" & "B" In right side of engine
compartment.
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SWITCHES
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Component Component Location \
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A/T Fluid Temperature Switch On left side of transmission.
Brake Fluid Level Switch In brake master cylinder
reservoir.
Center Differential Lock Detection
Switch On transfer case.
Page 481 of 1501
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 & 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.