1998 MITSUBISHI MONTERO sensor

Fig. 29: Testing Vehicle Speed Sensor
Courtesy of Mitsubishi Motor Sales of America
VOLTMETER
Circuit Test (Montero Sport Only)
1) Remove multi-meter assembly from top of dashboard. Check
voltage between ground and multi-meter harness-side connector terminal
No. 10 (Red/Black wire). If voltage reading is about 12 volts, go to
step 4). If voltage reading is not about 12 volts, go to next step.
2) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check circuit between multi-meter
harness connector and fusible link No. 6. See WIRING DIAGRAMS. Repair
as necessary. If circuit is okay, go to next step.
3) Turn ignition on. Check voltage between ground and multi-
meter harness-side connector terminal No. 11 (Black/White wire). See
WIRING DIAGRAMS . If voltage reading is about 12 volts, problem is
intermittent. If voltage reading is not about 12 volts, go to next
step.
4) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check circuit between multi-meter
assembly harness connector and ignition switch. See WIRING DIAGRAMS.
Repair as necessary. If circuit is okay, go to next step.
5) Turn ignition off. Check continuity between ground and
multi-meter assembly harness-side connector terminal No. 3 (Black
wire). If continuity is present, problem is intermittent. If
continuity is not present, go to next step.
6) Check harness connector to multi-meter assembly. Repair as
necessary. If connector is okay, check multi-meter assembly harness
connector ground circuit. See WIRING DIAGRAMS. Repair as necessary. If
circuit is okay, replace multi-meter assembly.

J - PIN VOLTAGE CHARTS
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Pin Voltage Charts
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
NOTE: Unless stated otherwise in testing procedures, perform all
voltage tests using a Digital Volt-Ohmmeter (DVOM) with a
minimum 10-megohm input impedance. Voltage readings may vary
slightly due to battery condition or charging rate.
Pin voltage charts are supplied to reduce diagnostic time.
Checking pin voltages at the PCM connector determines whether it is
receiving and transmitting proper voltage signals. Diagnostic charts
may also help determine if PCM harness is shorted or open.
TEST PROCEDURE
CAUTION: Shorting positive DVOM lead between connector terminal and
ground could damage vehicle wiring, sensor and PCM.
1) If necessary, remove Powertrain Control Module (PCM) to
access harness connector. For PCM location, see PCM LOCATION table.
Leave PCM connectors connected.
2) Using DVOM, backprobe terminals. Connect positive DVOM
lead to appropriate PCM terminal. Connect negative DVOM lead to PCM
ground terminal. For PCM terminal identification, see appropriate
chart. See Figs. 1-24.
3) All measurements are applicable to vehicle at normal
operating temperature at sea level. Unless otherwise noted, engine is
idling when specification requires engine running. Ensure transmission
shift selector is in Neutral or Park (as applicable). If DVOM displays\
measurement that is not within specification, see G - TESTS W/CODES
article.
PCM LOCATION TABLE









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Application Location
Eclipse 2.0L Non-Turbo ............ In Front of Left Front
Strut Tower
Mirage & Montero Sport .............. Behind Right Side Of
Instrument Panel (Glove Box)
Montero ........................... Right Front Kick Panel
All Others ......................... Behind Center Console









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Fig. 1: Identifying PCM Terminals (Diamante)
Courtesy of Mitsubishi Motor Sales of America

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

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

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

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

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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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