sensor MITSUBISHI MONTERO 1998 Service Manual
Page 895 of 1501
K - SENSOR RANGE CHARTS
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Sensor Operating Range Charts
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
Sensor operating range information can help determine if a
sensor is out of calibration. An out-of-calibration sensor may not set
a diagnostic trouble code, but it may cause driveability problems. For
sensors not listed in this article, see G - TESTS W/CODES article.
NOTE: Unless stated otherwise in test procedure, perform all
voltage tests using a Digital Volt-Ohmmeter (DVOM) with a
minimum 10-megohm input impedance. For connector terminal
identification, see TERMINAL IDENTIFICATION in
G - TESTS W/CODES article.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE TABLE ( 1)
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Application & Temperature F (C) Ohms
Diamante, & Eclipse Turbo & 2.4L
32 (0) ....................................... 5100-6500
68 (20) ...................................... 2100-2700
104 (40) ...................................... 900-1300
176 (80) ....................................... 260-360
Eclipse 2.0L Non-Turbo
77 (25) .................................... 9000-11,000
212 (100) ...................................... 600-800
Galant, Mirage & Montero Sport
68 (20) ...................................... 2100-2700
176 (80) ....................................... 260-360
Montero & 3000GT
32 (0) ............................................ 5800
68 (20) ........................................... 2400
104 (40) .......................................... 1100
176 (80) ........................................... 300
( 1) - Check resistance across ECT sensor terminals.
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INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE TABLE \
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Application & Temperature F (C) Ohms
Diamante, & Eclipse Turbo & 2.4L ( 1)
32 (0) ....................................... 5300-6700
68 (20) ...................................... 2300-3000
104 (40) ..................................... 1000-1500
176 (80) ....................................... 300-420
Eclipse 2.0L Non-Turbo ( 2)
77 (25) .................................... 9000-11,000
212 (100) ...................................... 600-800
Galant, Mirage 1.8L & Montero Sport ( 1)
68 (20) ...................................... 2300-3000
176 (80) ....................................... 300-420
Mirage 1.5L ( 2)
68 (20) ...................................... 2300-3000
Page 896 of 1501
176 (80) ....................................... 300-420
Montero & 3000GT (1)
32 (0) ............................................ 6000
68 (20) ........................................... 2700
176 (80) ........................................... 400
( 1) - IAT sensor is incorporated in airflow sensor assembly.
Check resistance between IAT sensor terminals No. 5
and 6. See Figs. 1-4.
( 2) - Check resistance across IAT sensor terminals No. 1
and 2. See Figs. 1-4.
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Fig. 1: IAT Sensor Terminals (Eclipse 2.0L Non-Turbo)
Courtesy of Mitsubishi Motor Sales of America
Page 897 of 1501
Fig. 2: IAT Sensor Terminals (Mirage 1.5L)
Courtesy of Mitsubishi Motor Sales of America
Fig. 3: IAT Sensor Terminals (Mirage 1.8L & Montero Sport 2.4L)
Courtesy of Mitsubishi Motor Sales of America
Page 898 of 1501
Fig. 4: IAT Sensor Terminals (All Other Models)
Courtesy of Mitsubishi Motor Sales of America
Throttle Position (TP) Sensor
Measure total and variable resistance between specified TP
sensor terminals. See Fig. 5 or 6. See
TP SENSOR TEST TERMINAL IDENTIFICATION table. Total resistance should
be 3500-6500 ohms. Variable resistance should change smoothly between
3500 and 6500 ohms as throttle valve is moved from closed to wide open
throttle.
TP SENSOR TEST TERMINAL IDENTIFICATION TABLE
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Application Terminals No.
Total Resistance
Eclipse 2.0L Non-Turbo ........................... 1 & 3
All Other Models ................................. 1 & 4
Variable Resistance
Eclipse 2.0L Non-Turbo ........................... 2 & 3
Diamante, Montero & Montero Sport 3.0L ........... 1 & 3
All Other Models ................................. 2 & 4
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Fig. 5: Identifying TP Sensor Terminals (Eclipse 2.0L Non-Turbo)
Courtesy of Mitsubishi Motor Sales of America
Page 899 of 1501
Fig. 6: Identifying TP Sensor Terminals (All Other Models)
Courtesy of Mitsubishi Motor Sales of America
VOLUME AIRFLOW (VAF) HERTZ TEST TABLE (1)
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Application Hz @ 700 RPM Hz @ 2500 RPM
Eclipse 2.0L Non-Turbo
& Mirage 1.5L ................ ( 2) ................ ( 2)
Montero ...................... 25-51 ............ 80-120
3000GT
DOHC
Non-Turbo ................ 24-50 ............ 71-111
Turbo .................... 26-52 ............ 93-133
SOHC ....................... 21-47 ............. 57-97
All Other Models .............. ( 3) ................ ( 3)
( 1) - Measure Hertz frequency using a scan tool.
( 2) - Vehicle is not equipped with VAF sensor.
( 3) - See G - TESTS W/CODES article.
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Page 997 of 1501
1) Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE.
Disconnect negative battery cable. Drain coolant. Remove air intake
hose. Remove throttle body and gasket with control cables and vacuum
hoses attached.
2) Remove EGR pipe (if equipped). Disconnect power brake
hose. Label and disconnect vacuum hoses and wiring harness connectors
as necessary. Remove intake plenum brackets and mounting bolts. Remove
intake plenum and gasket.
3) Disconnect high pressure fuel hose at fuel rail.
Disconnect fuel return hose. Disconnect vacuum hoses. Disconnect
injector electrical connectors. Remove fuel rail bolts, and lift fuel
rail and injectors from engine. Injectors may be removed after fuel
rail is removed from intake manifold.
Installation
To install, reverse removal procedure. Use NEW insulators and
"O" rings when installing injectors. Install injectors into fuel rail
with a twisting motion. Ensure injectors rotate smoothly when
installing. Refill cooling system.
Removal (Eclipse, Galant, Mirage & Montero Sport 3.0L)
1) Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE.
Disconnect negative battery cable. Disconnect PCV hose and breather
hoses. Disconnect high pressure fuel hose at fuel rail. Disconnect
fuel return hose and vacuum hoses.
2) Disconnect injector electrical connectors. Remove fuel
rail bolts, and lift fuel rail and injectors from engine. Injectors
may be removed after fuel rail is removed from intake manifold.
Installation
To install, reverse removal procedure. Use NEW insulators and
"O" rings when installing injectors. Use lubricant on "O" rings.
Install injectors into fuel rail with a twisting motion. Ensure
injectors rotate smoothly when installing.
Removal (Montero)
1) Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE.
Disconnect negative battery cable. Remove air intake hose. Remove
accelerator cable adjusting bolts. On A/T models, remove throttle
control cable. On all models, remove accelerator cable. Label and
disconnect all vacuum hoses from throttle body and upper intake
manifold (air intake plenum).
2) Remove EGR pipe and gasket. Remove ignition coil (if
necessary). Remove engine oil filler neck bracket. Disconnect PCV
hose. Remove throttle body, leaving coolant hoses connected. Remove
throttle body gasket. Remove front and rear intake plenum brackets.
Remove intake plenum mounting bolts. Remove intake plenum and gasket.
3) Disconnect high pressure fuel hose at fuel rail.
Disconnect fuel return hose. Disconnect vacuum hoses. Disconnect
injector electrical connectors. Remove fuel rail bolts, and lift fuel
rail and injectors from engine. Injectors may be removed after fuel
rail is removed from intake manifold.
Installation
To install, reverse removal procedure. Use NEW insulators and
"O" rings when installing injectors. Use lubricant on "O" rings.
Install injectors into fuel rail using a twisting motion. Ensure
injectors rotate smoothly when installing. Adjust throttle control and
accelerator cables (if necessary). Refill cooling system.
HEATED OXYGEN SENSOR (HO2S)
Removal & Installation
Page 998 of 1501
1) Front HO2S is mounted in exhaust pipe below exhaust
header. Rear HO2S is mounted behind catalytic converter. HO2S is
equipped with a permanent pigtail which must be protected from damage
when HO2S is removed. Ensure HO2S is free of contaminants. Avoid using
cleaning solvents of any type.
2) HO2S may be difficult to remove when engine temperature is
less than 120
F (48 C). If using original sensor, always use anti-
seize compound on threads before installation. New sensor threads are
precoated with anti-seize. Tighten HO2S to specification. See
TORQUE SPECIFICATIONS .
THROTTLE BODY
Removal
1) Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE.
Drain enough coolant to ensure coolant level is below throttle body.
Disconnect air intake hose.
2) Remove accelerator, cruise control and A/T throttle valve
cables (if equipped). Disconnect fuel vapor hose, electrical harness
connector, vacuum hose and coolant hoses. Remove throttle body
retaining bolts.
Disassembly
Remove throttle position sensor. Remove idle air control
motor. Remove throttle bracket and connector bracket (if equipped).
Remove idle position switch and adjusting nut (if equipped).
CAUTION: DO NOT remove throttle valve. DO NOT use cleaning solvents
on throttle position sensor, idle air control motor or idle
position switch.
Cleaning
1) Clean all parts except throttle position sensor, idle air
control motor and idle position switch in solvent.
WARNING: Safety glasses MUST be worn whenever compressed air is used
for parts cleaning.
2) Check vacuum port and passage for clogging. Clean vacuum,
vapor and fuel passages using compressed air.
Reassembly
To reassemble, reverse disassembly procedure.
Installation
To install, reverse removal procedure.
THROTTLE POSITION (TP) SENSOR
Removal & Installation
Throttle Position (TP) sensor is located on throttle body.
Disconnect TP sensor electrical connector. Remove TP sensor screws and
TP sensor. To install, reverse removal procedure. Tighten TP sensor
screws to specification. See TORQUE SPECIFICATIONS. For TP sensor
adjustment procedure, see D - ADJUSTMENTS article.
TURBOCHARGERS
Removal (Eclipse)
1) Disconnect negative battery cable. Drain engine coolant
and oil. On models equipped with A/C, remove condenser fan motor
assembly. Remove front heated oxygen sensor. Remove oil dipstick guide
and "O" ring.
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2) Disconnect air intake hose and vacuum hoses. Remove air
hose and air outlet housing. Remove heat protectors. Disconnect
exhaust pipe. Remove power steering oil pump and bracket. Remove
engine hanger bracket. Disconnect oil inlet pipe.
3) Disconnect engine coolant hoses and tubes from
turbocharger. Remove exhaust manifold nuts and bolts. Remove exhaust
manifold and gaskets. Disconnect oil pressure and return pipes. Remove
turbocharger and exhaust manifold assembly. Separate turbocharger from
exhaust manifold.
Removal (3000GT - Front)
1) Disconnect negative battery cable. Drain engine oil and
coolant. Remove radiator. Disconnect exhaust pipe. Remove air intake
hose, air hoses and air pipe. Remove generator and belt. Remove oil
dipstick guide.
2) Remove heat protector. Disconnect front heated oxygen
sensor connector. Remove oil return pipe. Remove turbocharger support
bracket, and remove turbocharger from exhaust manifold.
Removal (3000GT - Rear)
1) Disconnect battery cables, and remove battery. Drain
engine oil and cooling system. Remove accelerator cable. Remove air
hose, air pipe and heat protectors. Disconnect clutch booster vacuum
hose. Remove air intake hoses and EGR pipe. Disconnect heated oxygen
sensor connectors.
2) Remove oil pipe and EGR valve. Disconnect exhaust fitting,
and remove rear heat protector. Remove oil return pipe. Remove
turbocharger assembly.
Inspection (All Models)
Check turbine and compressor wheels for cracking and other
damage. Ensure turbine and compressor wheels turn smoothly. Check for
oil leakage from turbocharger assembly. Check for proper wastegate
valve operation. See I - SYSTEM/COMPONENT TESTS article.
CAUTION: Apply light coat of oil to inner surface of flared area on
water pipe (flare nut fitting) before connecting to engine.
Installation (All Models)
1) To install, reverse removal procedure. Before oil pipe
flare nut (above turbocharger) is installed, pour clean engine oil
into turbocharger oil pipe installation hole. Ensure oil and air hoses
are properly installed and securely clamped.
2) Use NEW gaskets. Adjust accelerator cable (if necessary).\
Refill engine oil and coolant. Check for oil and coolant leaks.
Tighten all bolts to specification. See TORQUE SPECIFICATIONS.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE\
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Applications Ft. Lbs. (N.m)
Coolant Pipe-To-Turbocharger Banjo Bolt .......... 31 (42)
EGR Valve ........................................ 16 (22)
Engine Coolant Temperature Sensor ................ 22 (30)
Exhaust Manifold-To-Engine Nuts ............ 18-21 (24-29)
Exhaust Manifold-To-Turbocharger Bolts ..... 40-47 (54-64)
Exhaust Pipe Bolts ......................... 21-36 (29-49)
Fuel Filter Line ................................. 27 (36)
Fuel Tank Drain Plug ....................... 11-18 (15-24)
Fuel Tank Nuts ............................. 15-21 (20-29)
Page 1000 of 1501
Heated Oxygen Sensor
Front .................................... 29-33 (39-44)
Rear ..................................... 15-29 (20-39)
Heat Protector Bolts .................. 8.8-11 (12.0-15.0)
Intake Manifold Plenum Bolt/Nut .................. 13 (18)
Knock Sensor ............................... 15-18 (20-24)
Oil Return Pipe-To-Engine .................. 10-14 (14-19)
Oil Supply Pipe-To-Engine Nut .................... 14 (19)
Oil Supply Pipe-To-Turbocharger Nut .............. 14 (19)
Plenum-To-Intake Manifold Bolts ............ 11-15 (15-20)
Throttle Body .................................... 14 (19)
Turbocharger-To-Exhaust Manifold Bolt/Nut
Step 1 ......................................... 21 (29)
Step 2 ........................ Additional 60-70 Degrees
Water Pipe-To-Turbocharger
Eclipse .................................. 25-36 (34-49)
3000GT ......................................... 22 (30)
INCH Lbs. (N.m)
Camshaft Position Sensor .......................... 80 (9)
Crankshaft Position Sensor ........................ 80 (9)
Distributor Hold-Down Bolt ...................... 106 (12)
Engine Cover ............................. 22-40 (2.5-4.5)
Fuel Pressure Regulator ........................... 80 (9)
Fuel Pump Nuts .................................. 22 (2.5)
Fuel Rail Bolts ....................... 80-106 (9.0-12.0)
TP Sensor Screws ......................... 13-22 (1.5-2.5)
Wastegate Actuator Bolts ............... 80-106 (9.0-12.0)
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Page 1006 of 1501
PASSIVE RESTRAINT SYSTEM INSPECTION
1998 Mitsubishi Montero
GENERAL INFORMATION
Passive Restraint System Inspection - Asian
* PLEASE READ THIS FIRST *
Follow all manufacturers servicing precautions when working
with air bag systems. See SERVICE PRECAUTIONS in the appropriate AIR
BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT
section.
INTRODUCTION
When a vehicle equipped with passive restraint system has
been involved in a collision, certain systems and components must be
inspected and or replaced regardless of whether or not the air bag has
deployed. Follow the manufacturer's guidelines provided in this
article.
ACURA (1988-98)
AIR BAG APPLICATION
AIR BAG APPLICATION TABLE - ACURA (1988-98) \
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Model Year (1) Location
Integra .............. 1994-98 ..................... D/P
Legend ............... 1991-95 ..................... D/P
1988-90 ...................... DS
NSX .................. 1993-98 ..................... D/P
1991-92 ...................... DS
Vigor ................ 1993-94 ..................... D/P
1992 ........................ DS
2.2CL ................. 1997 ....................... D/P
2.3CL ................. 1998 ....................... D/P
2.5TL ................ 1995-98 ..................... D/P
3.0CL ................ 1997-98 ..................... D/P
3.2TL ................ 1996-98 ..................... D/P
3.5RL ................ 1996-98 ..................... D/P
SLX .................. 1996-98 ..................... D/P
( 1) - Location Definitions: D/P = Driver's & Passenger's
Side, DS = Driver's Side Only, SI = Side Impact.
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INSPECTION PROCEDURES
INSPECTION PROCEDURES TABLE - ACURA (1988-98 EXCEPT SLX) \
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Action Component or System
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Replace After
* Air Bag Module(s)
Deployment
* Seat Belt Tensioners (If Equipped)
* SRS Control Unit
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Inspect & If
* Cable Reel
Damaged, Replace
* Dash or Impact Sensors (If Equipped)
Component
* Seat Belts