sensor MITSUBISHI MONTERO 1998 Owner's Manual

Removal & Installation
Discharge A/C system, using approved refrigerant
recovery/recycling equipment. Disconnect refrigerant temperature
sensor wiring connector. Remove temperature sensor from compressor. To
install, reverse removal procedure. Use new "O" ring on temperature
sensor.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE








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Application Ft. Lbs. (N.m)
A/C Compressor Bolt/Nut .................... 17-20 (23-27)
A/C Compressor Bracket Bolt/Nut .................. 37 (50)
A/C Compressor Clutch Coil Nut ................... 12 (16)
A/C Engine Coolant Temperature Switch ............ 26 (35)
INCH Lbs. (N.m)
Blower Motor Bolts/Nuts ........................... 44 (5)
Condenser Bolts/Nuts ............................ 106 (12)
Dual-Pressure Switch ............................. 89 (10)
Evaporator Assembly Bolts/Nuts .................... 44 (5)
Heater Assembly Bolts/Nuts ........................ 44 (5)









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WIRING DIAGRAMS

AIR BAG RESTRAINT SYSTEM
1998 Mitsubishi Montero
1998 AIR BAG RESTRAINT SYSTEMS
Mitsubishi
Montero
DESCRIPTION & OPERATION
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all WARNINGS and SERVICE PRECAUTIONS.
Supplemental Restraint System (SRS) consists of an SRS
warning light, driver-side and passenger-side air bag module,
clockspring, right and left front impact sensors, and SRS Air Bag
Control Unit (ECU). The SRS-ECU contains an analog and a safing impact\
sensor. See Fig. 1.
Air bags are designed to deploy in a frontal or near frontal
impact of moderate to severe force. For air bags to deploy, ignition
must be on and safing impact sensor and at least one front impact
sensor must activate simultaneously.
Fig. 1: Locating SRS Components
Courtesy of Mitsubishi Motor Sales of America.
SRS WARNING LIGHT

When ignition switch is turned to ON or START position, SRS
warning light on instrument panel should come on for about 7 seconds
and then go off. This indicates SRS-ECU has determined SRS is
functioning properly. If SRS warning light flashes, stays on all the
time, or does not come on, a fault exists in SRS. See
DIAGNOSIS & TESTING.
FRONT IMPACT SENSORS
Sensors are inertia switches that verify direction and
severity of impact. If impact is great enough, switch contacts close,
completing an electrical circuit. Front impact sensors are located
under front fenders. See Fig. 1.
AIR BAG MODULE(S)
An inflator assembly in the air bag module produces nitrogen
gas to fill air bag. See Fig. 1. When a small amount of current from
SRS-ECU is applied, ignitor starts a thermal reaction, which spreads
to a pellet-filled canister that produces nitrogen gas. Gas pressure
builds and discharges from inflator through a diffuser and screen
assembly, forcing trim cover to burst along its seams until air bag is
fully inflated. When air bag is fully inflated, gas escapes through
vents on sides of air bag.
SRS AIR BAG CONTROL UNIT (ECU)
SRS-ECU (with integral safing and analog impact sensor) is
located behind front floor console assembly. See Fig. 1. If a system
fault occurs, SRS-ECU memory stores a diagnostic trouble code (DTC).
DATA LINK CONNECTOR (DLC)
DLC is located under left side of dash. See Fig. 1. DLC is
used to access SRS self-diagnostics through Mitsubishi Multi-Use
Tester II (MUT-II) (MB991502).
CLOCKSPRING
Clockspring connects driver-side air bag module to steering
column wiring, forming SRS circuit. See Fig. 1. Clockspring is a flat,
ribbon-like cable that winds and unwinds when steering wheel is
turned. Because of clockspring's constant movement, it is the most
fragile part in the system.
SYSTEM OPERATION CHECK
WARNING: After servicing, always turn ignition on from passenger-side
of vehicle in case of accidental air bag deployment.
Turn ignition switch to ON position. SRS warning light on
instrument panel should come on for about 7 seconds and then turn off.
This indicates SRS is functioning properly. If SRS warning light does
not come on, stays on, or comes on while driving, SRS is
malfunctioning and needs repair. See DIAGNOSIS & TESTING.
SERVICE PRECAUTIONS
Observe the following precautions when working with SRS:
* Disable SRS before servicing any SRS or steering column

component. Failure to do this may result in accidental air
bag deployment and possible personal injury. Refer to
DISABLING & ACTIVATING AIR BAG SYSTEM .
* For about 60 seconds after air bag system is disabled, it
retains enough voltage to deploy air bags. After disabling
system, wait at least 60 seconds before servicing.
* After servicing, always turn ignition on from passenger-side
of vehicle in case of accidental air bag deployment.
* After servicing, check SRS warning light to verify system
operation. See SYSTEM OPERATION CHECK.
* Always wear safety glasses when servicing or handling an
air bag.
* The SRS-ECU must be stored in its original special container
until used for service. It must be stored in a clean, dry
place, away from sources of extreme heat, sparks and high
electrical energy.
* DO NOT expose air bag module and clockspring to temperatures
greater than 200
F (93C).
* When placing a live air bag module on a bench or other
surface, always face air bag module and trim cover up, away
from surface. This will reduce motion of module if air bag
accidentally deploys.
* After air bag deploys, air bag surface may contain deposits
of sodium hydroxide, which irritates 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. Refer to
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 a live (undeployed) air bag module, trim cover
must be pointed away from body to minimize injury in case of
accidental air bag deployment.
* DO NOT probe wire harness connector terminals. Instead, use
SRS Check Harness (MB991530).
* DO NOT probe a wire through insulator, as this will damage
it and eventually cause failure due to corrosion.
* When performing electrical tests, prevent accidental
shorting of terminals. Such shorts can damage fuses or
components and may cause a second fault code to set, making
diagnosis of original problem more difficult.
* Never use an analog volt/ohm meter or test light in place of
a Digital Volt/Ohm Meter (DVOM). Use only a DVOM with a
maximum test current of 2 mA (milliamps) at minimum range of
resistance measurement. Also see SPECIAL TOOLS.
* 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.
SPECIAL TOOLS
To avoid air bag deployment when working on SRS, DO NOT use
electrical test equipment such as test lights, battery or A/C-powered
volt/ohmmeter, or any type of electrical equipment other than those
specified by manufacturer. See SRS RECOMMENDED TOOLS table.
SRS RECOMMENDED TOOLS TABLE









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Tool Name Tool Number
For Component Replacement
Steering Wheel Puller ......................... MB990803
For Testing SRS
Digital Volt-Ohm Meter (DVOM) ...................... (1)
Multi-Use Tester II ........................... MB991502
ROM Pack ........................................... ( 2)
SRS Check Harness ............................. MB991613
For Deploying Air Bags
SRS Air Bag Adapter Harness "A" ( 3) ........... MB686560
SRS Air Bag Adapter Harness "B" ( 4) ........... MB628919
( 1) - Maximum current output of DVOM must not exceed 2 mA
(milliamps) when set on minimum range of resistance
measurement.
( 2) - ROM pack is used with multi-use tester.
( 3) - For on-vehicle deployment of driver-side air bag. For
on-vehicle or off-vehicle deployment of passenger-side
air bag.
( 4) - For off-vehicle deployment of driver-side air bag.









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DISABLING & ACTIVATING AIR BAG SYSTEM
WARNING: SRS system voltage is maintained for about 60 seconds after
battery cable is disconnected. After disconnecting battery
cable, wait at least 60 seconds before servicing SRS.
Failure to wait may cause accidental air bag deployment and
possible personal injury.
To disable system, turn ignition switch to LOCK position.
Disconnect negative battery cable. Shield cable end. Wait at least 60
seconds before servicing. To activate system, reconnect negative
battery cable.
DISPOSAL PROCEDURES
WARNING: Undeployed air bag must be deployed before disposal.
Disposing of an undeployed air bag may violate federal,
state and/or local laws. This also applies to vehicles that
are to be scrapped. Never sell a used air bag module.
UNDEPLOYED AIR BAG
WARNING: Deploy air bag outdoors and away from people. Air bag
deployment makes a loud noise. NEVER deploy air bag module
with trim cover face down.
NOTE: If replacing a deployed air bag, both front impact sensors
and SRS-ECU must also be replaced. If vehicle is to be
scrapped, perform PROCEDURE 1 (ON-VEHICLE DEPLOYMENT) below.
If vehicle will continue to be operated, perform PROCEDURE 2
(OFF-VEHICLE DEPLOYMENT) below.
Procedure 1 (On-Vehicle Deployment)
1) Before proceeding, follow air bag service precautions. See
SERVICE PRECAUTIONS . Open all doors and windows. Move vehicle to an
isolated area. Disconnect negative battery cable and wrap tape around
cable terminal.
2) Disconnect positive battery cable. Remove battery. Wait at

CAUTION: SRS-ECU connector is a double-locking mechanism. DO NOT use
excessive force when disconnecting connector.
Removal & Installation
1) Before proceeding, see SERVICE PRECAUTIONS. Deactivate
SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM .
2) Remove rear and front floor console assembly. Remove
switch panel and suspension control switch. Disconnect rear console
harness connector. Remove side panel A and rear console assembly.
3) Remove shift lever. Disconnect front console harness
connector and remove front console assembly. Disconnect SRS-ECU
connector. Remove mounting bolts, bracket and SRS-ECU. See Fig. 6.
4) To install, reverse removal procedure. Tighten bolts to
specification. See TORQUE SPECIFICATIONS . Activate SRS. See procedures
under DISABLING & ACTIVATING AIR BAG SYSTEM . Check AIR BAG warning
light for proper system function. SYSTEM OPERATION CHECK.
Fig. 6: Removing SRS Air Bag Control Unit (ECU)
Courtesy of Mitsubishi Motor Sales of America.
FRONT IMPACT SENSORS
Removal & Installation

1) Before proceeding, see SERVICE PRECAUTIONS. Deactivate
SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM .
2) Remove components for access to front impact sensors as
necessary. See Fig. 7. Remove front impact sensor mounting bolts.
Slide Green section of connector to release lock. Push down on pawl.
Disconnect electrical connector. Remove front impact sensor.
3) To install, reverse removal procedure. Position sensor
with arrow facing toward front of vehicle. Tighten bolts to
specification. See TORQUE SPECIFICATIONS . Activate SRS. See procedures
under DISABLING & ACTIVATING AIR BAG SYSTEM . Check AIR BAG warning
light for proper system function. SYSTEM OPERATION CHECK.
Fig. 7: Locating Front Impact Sensors
Courtesy of Mitsubishi Motor Sales of America.
ADJUSTMENTS

Symptom Inspection Procedure
Communication With All Systems Not Possible ............ 1
Communication With SRS Only Not Possible ............... 2
Ignition Switch On (Engine Stopped)
SRS Warning Light Does Not Come On ............... DTC 43
SRS Warning Light Stays On After 7 Seconds ...... DTC 43









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INSPECTION PROCEDURE 1
The cause is probably in power supply system (including
ground circuit of diagnostic line). Check connectors and harness, and
repair if necessary.
INSPECTION PROCEDURE 2
NOTE: Refer to WIRING DIAGRAMS for connector identification.
1) Before proceeding, see SERVICE PRECAUTIONS. Deactivate
SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM .
2) Measure SRS Check Harness (MB991613) connector No. 5.
Disconnect SRS-ECU connector C-122 and connect SRS check harness
connector No. 3 to C-122. Check continuity between terminal No. 20, 21
and ground. If there is no continuity, go to next step. If there is
continuity, go to step 4).
3) Check connector C-122, and repair if necessary. If
connector is okay, check for trouble symptoms. If fault exists, check
harness between SRS-ECU and ground, and repair if necessary.
4) Measure SRS check harness connector No. 5. Disconnect SRS-
ECU connector C-122 and connect SRS harness check connector No. 3 to
C-122. Connect negative battery cable. Measure voltage between
terminal No. 13 and 14, and body ground. If voltage at terminals is 9
volts or more, check harness wire between SRS-ECU and Data Link
Connector (DLC), and repair if necessary. If harness wire is okay,
replace SRS-ECU. See SRS AIR BAG CONTROL UNIT (ECU) under REMOVAL &
INSTALLATION. If voltage is not as specified, check connector C-80, C-
93, C-101, and C-132, and repair if necessary. If connectors are okay,
check for trouble symptoms. If fault exists, check harness between
SRS-ECU and IG1 A or B (ignition switch), and repair if necessary.
Fig. 10: Identifying SRS Check Harness (MB991613) Connectors
Courtesy of Mitsubishi Motor Sales of America.
DTC 11, 12 & 13: FRONT IMPACT SENSOR SYSTEM

NOTE: Refer to WIRING DIAGRAMS for connector identification.
1) Before proceeding, see SERVICE PRECAUTIONS. Deactivate
SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM .
2) Check front impact sensor, and replace if necessary. See
FRONT IMPACT SENSORS under REMOVAL & INSTALLATION. Measure SRS Check
Harness (MB991613) connector No. 5. Disconnect SRS-ECU connector C-122\
and connect SRS check harness connector No. 3 to C-122. Measure
resistance between terminals for normal value of 1,900-2,100 ohms. If
resistance is not as specified, go to next step. If resistance is as
specified, check for trouble symptoms. If fault exists, replace SRS-
ECU. See SRS AIR BAG CONTROL UNIT (ECU) under REMOVAL & INSTALLATION.
3) Check connector A-71, A-75, C-113, and C-122, and repair
if necessary. If connectors are okay, check for trouble symptoms. If
fault exists, inspect harness between SRS-ECU and front impact sensor,
and replace harness if necessary.
DTC 14: ANALOG "G" SENSOR SYSTEM
Before proceeding, see SERVICE PRECAUTIONS. Replace SRS-ECU.
See SRS AIR BAG CONTROL UNIT (ECU) under REMOVAL & INSTALLATION.
DTC 15 & 16: SAFING "G" SENSOR SYSTEM
Before proceeding, see SERVICE PRECAUTIONS. Replace SRS-ECU.
See SRS AIR BAG CONTROL UNIT (ECU) under REMOVAL & INSTALLATION.
DTC 21, 22 & 61: DRIVER-SIDE AIR BAG MODULE (SQUIB) SYSTEM
WARNING: During the following procedure, never measure circuit
resistance of air bag module (squib), even when using
specified DVOM. If circuit resistance is measured, it may
cause accidental air bag deployment and personal injury.
NOTE: Refer to WIRING DIAGRAMS for connector identification.
1) Before proceeding, see SERVICE PRECAUTIONS. Deactivate
SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM .
2) Perform clockspring test, and repair as necessary. See
CLOCKSPRING TEST under COMPONENT TESTING. Disconnect clockspring
connector C-129. Connect SRS Check Harness (MB991613) connector No. 1
to clockspring connector. Connect negative battery cable. Erase DTC
memory and check if DTCs 21, 22, or 61 are set. If any of these DTCs
are output, go to next step. If DTCs are not output, go to step 4).
3) Check SRS-ECU connector C-122 and clockspring connector C-
129, and repair as necessary. If connectors are okay, check for
trouble symptoms. If fault exists, check harness between SRS-ECU and
clockspring. Disconnect connector C-122 and C-129. Connect SRS Check
Harness connector No. 1 to C-129 and No. 3 to C-122. Check resistance
between terminals No. 5 and 6. If resistance is approximately 3 ohms,
replace SRS-ECU. See SRS AIR BAG CONTROL UNIT (ECU) under REMOVAL &
INSTALLATION. If resistance is not as specified, repair as necessary.
4) Check connector C-129 and 1 (air bag module connector),
and repair if necessary. If connectors are okay, check trouble
symptoms. If fault exists, replace driver-side air bag module. See
DRIVER-SIDE AIR BAG MODULE under REMOVAL & INSTALLATION.
DTC 24, 25 & 64: PASSENGER-SIDE AIR BAG MODULE (SQUIB) SYSTEM
WARNING: During the following procedure, never measure circuit
resistance of air bag module (squib), even when using
specified DVOM. If circuit resistance is measured, it may

ANTI-LOCK BRAKE SAFETY PRECAUTIONS
1998 Mitsubishi Montero
GENERAL INFORMATION
Anti-Lock Brake Safety Precautions
* PLEASE READ THIS FIRST *
This article is intended for general information purposes
only. This information may not apply to all makes and models. If
vehicle is equipped with Anti-Lock Brake System (ABS), refer to
appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES section for
description, operation, depressurizing, testing, system bleeding,
trouble shooting and servicing of specific system.
WARNING: Failure to depressurize ABS could lead to physical injury.
ANTI-LOCK BRAKE SAFETY PRECAUTIONS
WARNING: Failure to depressurize ABS could lead to physical injury.
* NEVER open a bleeder valve or loosen a hydraulic line
while ABS is pressurized.
* NEVER disconnect or reconnect any electrical connectors
while ignition is on. Damage to ABS control unit may result.
* DO NOT attempt to bleed hyudarulic system without first
referring to the appropriate ANTI-LOCK BRAKE SYSTEM article
in the BRAKES section.
* Only use specially designed brake hoses/lines on ABS equipped
vehicles.
* DO NOT tap on speed sensor components (sensor, sensor rings).
Sensor rings must be pressed into hubs, NOT hammered into
hubs. Striking these components can cause demagnetization or
a loss of polarization, affecting the accuracy of the speed
signal returning to the ABS control unit.
* DO NOT mix tire sizes. Increasing the width, as long as tires
remain close to the original diameter, is acceptable. Rolling
diameter must be identical for all 4 tires. Some
manufacturers recommend tires of the same brand, style and
type. Failure to follow this precaution may cause inaccurate
wheel speed readings.
* DO NOT contaminate speed sensor components with grease. Only
use recommended coating, when system calls for an
anti-corrosion coating.
* When speed sensor components have been removed, ALWAYS check
sensor-to-ring air gaps when applicable. These specifications
can be found in each appropriate article.
* ONLY use rocommended brake fluids. DO NOT use silicone brake
fluids in an ABS equipped vehicle.
* When instlling transmittion devices (CB's, telephones, etc.)
on ABS equipped vehicles, DO NOT locate the antenna near the
ABS control unit (or any control unit).
* Disconnect all on-board computers, when using electric
welding equipment.
* DO NOT expose the ABS control unit to prolonged periods of
high heat (185
F/85C for 2 hours is generally considered a
maximum limit).